Which Cams

[To The Max]

I am thinking of changing the Andrews 55g cams I'm running, would like to get the torque happening
a little bit sooner. I have a 08 softail with  103 cylinders sc, compressor heads set at 10.2, sc 50mm throttle body and bassani 2-1 exhaust. and of course would like a bit more horse power without getting bumped around on partial throttle opening. yes I want it all can any body help.

[Jaycee1964]

A 54 would work

[1FSTRK]

Advance the 55 cams 4 degrees.

[joe_lyons]

First try the advance, and see how you like it. 

[Jaycee1964]

Don't think he will be happy with the 55 with +4.  With the 55's much longer overlap and longer duration; Especially on the exhaust the + 4 will help but not that much and the TDC lift will be getting up there in the .220's with the +4 as well.

[metaliser]

I would throw a set of 57's in there and be done with it.

[dsvracer]

If you are looking for more power do something with those compressor heads.  they do not flow all that well and could use some TLC.  dsv

[Bigbluff]

I would throw a set of 57's in there and be done with it.

10.2:1 compression is too much for Andrews 57 cam...if reliability is desired. I'm running Andrews 54 with 10.3:1 compression on my 103 and 50mm TB. Very happy making 113 ft/lbs TQ and 112 HP. A T-man 590 or 625 would be good choices also.

[Barrett]

Don't think he will be happy with the 55 with +4.  With the 55's much longer overlap and longer duration; Especially on the exhaust the + 4 will help but not that much and the TDC lift will be getting up there in the .220's with the +4 as well.

Some cams have more TDC lift than that.. The +4* sprocket should move the R's 3-400 sooner.. A 30T pulley will help also.. I have 55's on the way and mine are going in advanced.. I hate the thought of giving up too much on the bottom from my 37's but I wanted to try bigger cams when I add some cubes..

[Hossamania]

I like my 55's, but I did change to 3:37 gearing. It helps, but they are still a top end can, not stump pullers. Downshifting to the power band is quite easily done.

[metaliser]

I would throw a set of 57's in there and be done with it.

10.2:1 compression is too much for Andrews 57 cam...if reliability is desired. I'm running Andrews 54 with 10.3:1 compression on my 103 and 50mm TB. Very happy making 113 ft/lbs TQ and 112 HP. A T-man 590 or 625 would be good choices also.

Bigbluff I respectively have to disagree with you on this one, the 10.2 on a 57 cam would be perfect with a good tune. I have it in my 2014 Limited at 10.1 and it wouldn't hurt at all to be bumped just a little on the compression, it would really bring it alive. I also looked at the 54 and 57 on BigBoyz site to compare the 2 and again see no problem with the 10.2 compression. There are so many different combo's that will work though the end result I hope will feel the bill for the OP.

[autoworker]

I would have the heads ported first.Then you can have them milled to add compression to your existing cam (55).It will work very well with more compression.

The 54 would work as well as the 57.You will need a good tune for the 57 at the compression ratio you will end up  with.

[To The Max]

Well so much to think about. 54 s I have looked at but worried that I may loose a little horse power through the top end. I wondered if stilting the inlet might help the top end a little. the 57s looked a little better and tuning wont be a problem but they don't show them as gear drive ? advancing the timing 4 deg might be worth a try but what I don't like about the 55s is the partial throttle low rpm surge they have ,I tried tuning it out and it helped but it still gives me the s--ts a bit. and thank you all for your input so far. Max

[Matt C]

Generally, when you "want it all", cubic inches (or boost) become the only options.
There's no free lunch, but if you can narrow down where your preferences are, you
can optimize and tailor your curve to the riding style. Give and take, so to speak...

You may be able to make the heads work better and pick some cams that are more
suited to your riding goals.

[sfmichael]

Generally, when you "want it all", cubic inches (or boost) become the only options.
There's no free lunch, but if you can narrow down where your preferences are, you
can optimize and tailor your curve to the riding style. Give and take, so to speak...

You may be able to make the heads work better and pick some cams that are more
suited to your riding goals.

+1   there it is ttMax

[To The Max]

I just got back from my mates work shop , he has worked on Harley's all his working life he told me the same thing that you guys have said (flow the heads and get 54 cams) . so thank you guys you have helped me decide. Max

[joe_lyons]

Some of your low rpm surge could be attributed to the tune. 

[autoworker]

Some of your low rpm surge could be attributed to the tune.

There is no reason the 55's would cause any low rpm  surge issues. I have them in a 107in. Road Glide and they work very well with the right compression and tune.

[joe_lyons]

Some of your low rpm surge could be attributed to the tune.

There is no reason the 55's would cause any low rpm  surge issues. I have them in a 107in. Road Glide and they work very well with the right compression and tune.

Key word is right compression.  I have tuned bikes with cams that would like more compression and a lot of the low end was a PITA to get sorted out.

[Barrett]

What compression is the happy spot for the 55's?

[joe_lyons]

I know stock 103 is too low for sure as I have had to retune a few.

[sfmichael]

What compression is the happy spot for the 55's?

Andrews says 9.8-10.2 but that seems a bit low to me for a cam with 248/252* of duration and a 46* close. I think they're about a half a point low give or take a bit.

[To The Max]

Its funny that you mention comp. When I fitted the 103 barrels I dropped the comp from 10.5 to 10.2,
that's when it seamed to get worse and I have tuned it out a lot. the other day I tuned my mates 96 softail its std with V and H large radius 2-2 and  a filter sc 211 cams ,well Ive got to say it supprised me it pulled really well sounded like a comp bike and rode as nice as grandmas electric gofer that's when maybe thers something better.

[autoworker]

10.7-10.8

If the tune is correct and the heads are able to be milled enough to achieve the compression ratio.The manifold fitment may be an issue if the heads need too much milled to gain the needed compression.

[Barrett]

10.7-10.8

If the tune is correct and the heads are able to be milled enough to achieve the compression ratio.The manifold fitment may be an issue if the heads need too much milled to gain the needed compression.

S&S 79cc heads come in at 10.76:1/9.82:1/207ccc.. That's 3.885 bore, +4* sprocket and a .030HG..
The .040HG puts it at 10.54:1/9.62:1/201.8.. I can get 93 octane with no problem and it is a barhopper Fatbob, But I think I'll be safer with the .040HG.. I already have the .030's so I will be tempted to use them..

[To The Max]

I am going to try the + 4 gear . can anybody tell me where I can get one.

[No Cents]

Zipper's or Andrews.
I've seen them also on E-Bay.

Ray

[No Cents]

here is one on E-Bay

[attach=0]

Ray

[No Cents]

and the one from Zipper's

[attach=0]

Ray

[To The Max]

Thanks for the effort but I have gear drive that's chain drive

[Jaycee1964]

I am going to try the + 4 gear . can anybody tell me where I can get one.

I have $100 says you don't like it..   

[05FLHTC]

http://www.woodcarbs.com/camgears.htm

[To The Max]

I am going to try the + 4 gear . can anybody tell me where I can get one.

I have $100 says you don't like it..   :emsad:I hope your wrong but I wont take the $100 anyway it might be the cheapest thing to try first. I just had a thought I might be able to advance the timing one tooth

[sfmichael]

I am going to try the + 4 gear . can anybody tell me where I can get one.

I have $100 says you don't like it..   :emsad:I hope your wrong but I wont take the $100 anyway it might be the cheapest thing to try first. I just had a thought I might be able to advance the timing one tooth

no no no....that'll be like advancing it 10-20* depending on how many teeth are on there

[To The Max]

http://www.woodcarbs.com/camgears.htm

Checked it out thanks.

[1FSTRK]

All you need is an offset piece of key stock to advance the gear drives. Bob Wood makes them but if you have a degree wheel and a file you can make one up for about a dollar.
Do not forget you will need room for a little TDC lift on the intake valve when you advance the cam.

http://www.woodcarbs.com/Cam%20Rotation.pdf

[strokerjlk]

I am thinking of changing the Andrews 55g cams I'm running, would like to get the torque happening
a little bit sooner. I have a 08 softail with  103 cylinders sc, compressor heads set at 10.2, sc 50mm throttle body and bassani 2-1 exhaust. and of course would like a bit more horse power without getting bumped around on partial throttle opening. yes I want it all can any body help.

it would help to see the dyno sheet for what you have now.
the hp gain between 10.2 and 10.5 on that cam was only 2/2 . but it felt more responsive at cruise.
advancing it 4 deg makes it like a DME 575 and gives it a TDC lift of 227. with your compressor heads that is getting close.


S&S 570 is my choice for you, given your info

[To The Max]

Hope to get a dyno run in this week

[Bigbluff]

I would throw a set of 57's in there and be done with it.

10.2:1 compression is too much for Andrews 57 cam...if reliability is desired. I'm running Andrews 54 with 10.3:1 compression on my 103 and 50mm TB. Very happy making 113 ft/lbs TQ and 112 HP. A T-man 590 or 625 would be good choices also.

Bigbluff I respectively have to disagree with you on this one, the 10.2 on a 57 cam would be perfect with a good tune. I have it in my 2014 Limited at 10.1 and it wouldn't hurt at all to be bumped just a little on the compression, it would really bring it alive. I also looked at the 54 and 57 on BigBoyz site to compare the 2 and again see no problem with the 10.2 compression. There are so many different combo's that will work though the end result I hope will feel the bill for the OP.

With the 57's IVC of 38* and running 10.2:1 compression ratio, your tune will be a lot more critical. Ignition timing will probably have to be retarded considerably more than it would be with less compression or with a cam with a later IVC...like the 54. Since you are running a wet-head bike, you're probably able to get away with it better than a pre-2014 Ultra could handle as the hotter heads are more likely to have a problem with hot spots and pre-ignition. I believe TTMax's bike is an '08 Softtail which is not running the water-cooled heads, so I still stand by my earlier post.

[Jaycee1964]

I would throw a set of 57's in there and be done with it.

10.2:1 compression is too much for Andrews 57 cam...if reliability is desired. I'm running Andrews 54 with 10.3:1 compression on my 103 and 50mm TB. Very happy making 113 ft/lbs TQ and 112 HP. A T-man 590 or 625 would be good choices also.

Bigbluff I respectively have to disagree with you on this one, the 10.2 on a 57 cam would be perfect with a good tune. I have it in my 2014 Limited at 10.1 and it wouldn't hurt at all to be bumped just a little on the compression, it would really bring it alive. I also looked at the 54 and 57 on BigBoyz site to compare the 2 and again see no problem with the 10.2 compression. There are so many different combo's that will work though the end result I hope will feel the bill for the OP.

With the 57's IVC of 38* and running 10.2:1 compression ratio, your tune will be a lot more critical. Ignition timing will probably have to be retarded considerably more than it would be with less compression or with a cam with a later IVC...like the 54. Since you are running a wet-head bike, you're probably able to get away with it better than a pre-2014 Ultra could handle as the hotter heads are more likely to have a problem with hot spots and pre-ignition. I believe TTMax's bike is an '08 Softtail which is not running the water-cooled heads, so I still stand by my earlier post.

I have seen the 57's run at that on a 103" without issues all day long.  Tuning it will not be an issue. 

[JustinB]

I would throw a set of 57's in there and be done with it.

10.2:1 compression is too much for Andrews 57 cam...if reliability is desired. I'm running Andrews 54 with 10.3:1 compression on my 103 and 50mm TB. Very happy making 113 ft/lbs TQ and 112 HP. A T-man 590 or 625 would be good choices also.

Bigbluff I respectively have to disagree with you on this one, the 10.2 on a 57 cam would be perfect with a good tune. I have it in my 2014 Limited at 10.1 and it wouldn't hurt at all to be bumped just a little on the compression, it would really bring it alive. I also looked at the 54 and 57 on BigBoyz site to compare the 2 and again see no problem with the 10.2 compression. There are so many different combo's that will work though the end result I hope will feel the bill for the OP.

With the 57's IVC of 38* and running 10.2:1 compression ratio, your tune will be a lot more critical. Ignition timing will probably have to be retarded considerably more than it would be with less compression or with a cam with a later IVC...like the 54. Since you are running a wet-head bike, you're probably able to get away with it better than a pre-2014 Ultra could handle as the hotter heads are more likely to have a problem with hot spots and pre-ignition. I believe TTMax's bike is an '08 Softtail which is not running the water-cooled heads, so I still stand by my earlier post.

I have seen the 57's run at that on a 103" without issues all day long.  Tuning it will not be an issue.

  We have done a few 57 at 10.2. Make a very good running motorcycle. Not hard to tune at all.

Justin

[To The Max]

This I great guys lot of very good info. looked for 57 gear drives on the Andrews site couldn't find  them , my wife said I had a daddy look. Dynos booked for Friday morning and we will see where its at.

[jmorton10]

All you need is an offset piece of key stock to advance the gear drives. Bob Wood makes them

I used the Woods offset key to advance my TW6-HG's 4 degrees myself, but as noted it would be pretty simple to make your own....

~John

[Jaycee1964]

This I great guys lot of very good info. looked for 57 gear drives on the Andrews site couldn't find  them , my wife said I had a daddy look. Dynos booked for Friday morning and we will see where its at.

Your right,  In this case the 54HG and set it at 10.5-10.6 and let it rip.

Nice gains could also be seen if the heads are tended to as well.

Very similar output to a 57 as long as you apply more compression.  These cams will carry farther to the right as well.

[To The Max]

 hi guys here is the dyno sheet, your comments would be appreciated

[sfmichael]

pretty respectable numbers  - how's it ride?   

[Rusty Steel]

Looks good, what's cams did you decide on? graft doesn't say, only STD... The 55's like compression; plain and simple. I've run the 55's in a hot 95" for about three years. Runs like a bat out of hell. Somewhat light Wide-glide copy. Pulls hard from about 2800 to WAY past red line. I have all the basic goodies, CCP is 206ish-210ish depending on the temperature...I am very happy with my 55's.
Good luck to you...My.02

[To The Max]

pretty respectable numbers  - how's it ride?   

Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.

[To The Max]

Looks good, what's cams did you decide on? graft doesn't say, only STD... The 55's like compression; plain and simple. I've run the 55's in a hot 95" for about three years. Runs like a bat out of hell. Somewhat light Wide-glide copy. Pulls hard from about 2800 to WAY past red line. I have all the basic goodies, CCP is 206ish-210ish depending on the temperature...I am very happy with my 55's.
Good luck to you...My.02

Left the 55s in . thought I could make a better decision if I knew what the numbers where, the dyno guy said it was good and the fuel was good, but when I looked at it the printout  shows it is leaner than I set it on the map. the settings are 12.4, what am I to think about that

[Rusty Steel]

I think that you just need a little more compression. The 55's have been around a long time, for a reason, as its a proven cam. If you can get your compression up about between 10:5 -11:0 and a good tune,(I don't recall what you have for a tuner) You will be all smiles 
Best of luck to you.

Add I'm 206ish-210ish CCP. @ 350ft Elevation

[To The Max]

Comps 10.2 tuner is Tmax  and are you saying the printout is showing rich? And I tuned it

[05FLHTC]

Comps 10.2 tuner is Tmax  and are you saying the printout is showing rich? And I tuned it

I'd think you need to get it into a tuner & get a real tune before ya make a final decision 

[To The Max]

The dyno guy said he was very happy with the horse power and torque curves  and the air fuel ratio, told me not to touch it .

[autoworker]

[/quote]
Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.
[/quote]

10.7-10.8 compression would bring your low rpm right on in. Granted this is coming from a 55 cam fan.

[05FLHTC]

Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.

More indications that it needs tune 400 miles on a tank??? 

The dyno guy said he was very happy with the horse power and torque curves  and the air fuel ratio, told me not to touch it .

That answer is not something I would take for granted not that easily, if it don't run smooth and it's getting 400 miles from a tank of fuel it definitely needs to be tuned an experienced dyno guy would at a minimum be able to make it smoother.

Your bike do what ya want but based on the info you posted it needs to be tuned by a competent dyno operator.

[Hossamania]

Another big fan of the 55's.

[Barrett]

Y'all are talkin me into squeezing mine a little more.. I'll shoot for 10.76:1/9.82:1/207ccc

[Sunny Jim]

I have ridden 'to the Max,s' bike.
It all comes together above 2700 rpm approx. and pulls like a train. I think he wants that pulling power earlier . I know I would on that bike. He has it running well though. I would change the cams.
Max is an Ol' rev head. I think his quad cam Lexus V8 hilux with blower is testament to his need for speed. (600 hp).

[Barrett]

He should look into the 30T pulley.. I did it on my 08FXDF and it's hard to beat for the bang for the buck factor..

[To The Max]

pretty respectable numbers  - how's it ride?   

Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.

Err just made a little mistake, should read 400 Kilometers  per full tank not miles I'm a dummy.

[Sunny Jim]

Compresion Max , Compression. 10.19:1 is not so  sweet for 55s. My tm577s , which are similar to 55s , like 10.5:1 +.
Maybe some 585s and a 030 HG.
You can't the music! Nobody can stop the music!

[To The Max]

Im ready for bed help me whats a 30hg

[rigidthumper]

.030" thick head gasket.

[speedzter]

No magic fix by changing cams or a few points of compression.
All you will do is move things around a little, but won't be the change your looking for.
dsvracer and a few others gave you a good hint a few pages back , you are using basically stock heads.
Tuning also very important .
I don't get this comment:
"Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 "
How much time do you spend at those revs ?

[Don D]

I am thinking of changing the Andrews 55g cams I'm running, would like to get the torque happening
a little bit sooner. I have a 08 softail with  103 cylinders sc, compressor heads set at 10.2, sc 50mm throttle body and bassani 2-1 exhaust. and of course would like a bit more horsepower without getting bumped around on partial throttle opening. yes I want it all can any body help.

You have closer to 10.5:1 if the head gasket is stock. The heads are stock and just milled for added compression. Should be fine up to a peak power point of 5-5.5K. As far as low end goes, I think you are describing throttle sensitivity being jumpy and rough low speed operation. Well with the TB, compression, and Tmax I think that is understandable. The amount timing in the low speed cells would have influence as well. Add the cams overlap and there may be points of reversion at low speed. All add up to what you describe

Much smoother operation will come by changing cams to one that is a single pattern in the 245° area with wider LSA say 104-106°. Next step would be remove the Tmax and use the OEM Delphi ECU and a full featured tuner such as TTS or Power Vision, use the tuners choice.

[To The Max]

No magic fix by changing cams or a few points of compression.
All you will do is move things around a little, but won't be the change your looking for.
dsvracer and a few others gave you a good hint a few pages back , you are using basically stock heads.
Tuning also very important .
I don't get this comment:
"Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 "
How much time do you spend at those revs ?

Yes I think the heads need to come of and I'm looking at cams at this time. the information that has been so kindly given has been a lot of help. going on a one week ride soon so I wont touch it till I get back and I will let you know how it goes. By the way on light throttle low load it jerks a bit as soon as I apply slight load it smooths out . taking a little ignition timing out at those points has helped but its still there not bad though. also I would like the power to come on a little sooner.

[dirtracin23]

pretty respectable numbers  - how's it ride?   

Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.

Err just made a little mistake, should read 400 Kilometers  per full tank not miles I'm a dummy.

I was wondering about that. 400 miles to a tank would lead me to think it was damn lean. I was like..... There's no way. It wouldn't hardly even run if it was starved that much.   

[Rusty Steel]

pretty respectable numbers  - how's it ride?   

Just a little jumpy till about 1700 rpm would like a little moor torque through to 2400 and really good through 6200 - 6300 good for overtaking and really good if knock it down a couple of cogs, returns about 400 miles from a tank without re filling at 65-75 mph cruise.

Err just made a little mistake, should read 400 Kilometers  per full tank not miles I'm a dummy.

I was wondering about that. 400 miles to a tank would lead me to think it was damn lean. I was like..... There's no way. It wouldn't hardly even run if it was starved that much.   

It's all good if he got 80+ per gallon, or is it Liters down under.

[Arseclown]

Hi all
I have a similar predicament.  I'm running s&s 585 cams in a 107ci motor with about 10.4 comp - no work to the stock 96ci heads. No tachometer or dyno sheet but she seems to come alive well above cruising revs. Would like her to come on earlier in the midrange or lower. I'd prefer not increasing comp as I can't always get good fuel where I am. What other cams could I consider? Would a wood tw5-6 do the trick? Most of the earlier intake closing cams don't like comp above 10:1.

[joe_lyons]

Andrews 54

[Jaycee1964]

Andrews 54

  You beat me to it.

[Barrett]

Hi all
I have a similar predicament.  I'm running s&s 585 cams in a 107ci motor with about 10.4 comp - no work to the stock 96ci heads. No tachometer or dyno sheet but she seems to come alive well above cruising revs. Would like her to come on earlier in the midrange or lower. I'd prefer not increasing comp as I can't always get good fuel where I am. What other cams could I consider? Would a wood tw5-6 do the trick? Most of the earlier intake closing cams don't like comp above 10:1.

Advancing them +4 is a cheap and easy way to move the R's 3-400 to the left.. 

[Arseclown]

Andrews 54

  You beat me to it.

I didn't think the 54 cams liked compression beyond 10:1?
My bike is currently set at 10.4.

[Jaycee1964]

Andrews 54

  You beat me to it.

I didn't think the 54 cams liked compression beyond 10:1?
My bike is currently set at 10.4.

Nope,  The 57 is more sensitive in your range.  I have seen the 54 run well at 10.4-10.5 without issues and it'll be a strong one too

[harpwrench]

Hi all
I have a similar predicament.  I'm running s&s 585 cams in a 107ci motor with about 10.4 comp - no work to the stock 96ci heads. No tachometer or dyno sheet but she seems to come alive well above cruising revs. Would like her to come on earlier in the midrange or lower. I'd prefer not increasing comp as I can't always get good fuel where I am. What other cams could I consider? Would a wood tw5-6 do the trick? Most of the earlier intake closing cams don't like comp above 10:1.

No dyno sheet, does that mean it hasn't been tuned? Carb or FI? Exhaust? What do you call cruise range?

[jmorton10]

Next step would be remove the Tmax and use the OEM Delphi ECU and a full featured tuner such as TTS or Power Vision, use the tuners choice.

I'm curious why that would be an improvement??

I recently bought an 07 RK from a buddy of mine who was in a money bind.  It has a 124" motor built by Hillside.  After spending a day on the dyno at Joes Cycle it produced 139/139 with an open loop Thundermax ECU system.

It is one of the smoothest running Harleys I have ever ridden (& I've ridden more than most people have).  I have ridden/built/repaired custom built hot-rod Harleys since the early 70's, but this is the first one I didn't build myself and I'm kind of figuring out things on it as I go along. The thing starts instantly, idles perfectly & pulls very smoothly from idle to 6500 or so. 

~John

[joe_lyons]

Next step would be remove the Tmax and use the OEM Delphi ECU and a full featured tuner such as TTS or Power Vision, use the tuners choice.

I'm curious why that would be an improvement??

I recently bought an 07 RK from a buddy of mine who was in a money bind.  It has a 124" motor built by Hillside.  After spending a day on the dyno at Joes Cycle it produced 139/139 with an open loop Thundermax ECU system.

It is one of the smoothest running Harleys I have ever ridden (& I've ridden more than most people have).  I have ridden/built/repaired custom built hot-rod Harleys since the early 70's, but this is the first one I didn't build myself and I'm kind of figuring out things on it as I go along. The thing starts instantly, idles perfectly & pulls very smoothly from idle to 6500 or so. 

~John

But like you said it took a day to do it.  Many have their favorites And what works well for them.  I'm just not a huge fan of the tmax but that's not to say that others don't like it.  If fuel is right and spark is right then that's the name of the game.  I just always look at the fuel needs being different at different map loads not just throttle positions, same with ignition.

[joe_lyons]

Andrews 54

  You beat me to it.

I didn't think the 54 cams liked compression beyond 10:1?
My bike is currently set at 10.4.

I have a sheet with an Andrews 54 set at 10.4 in the dyno section and I thought it did great.

[Sunny Jim]

555  - woods or Tman

[To The Max]

For all the guys that gave good advice to me, just thought I might let you know the outcome. my mate sunny jim let me have his 107 barrels and s c cnc heads which we set to 10.5 and left the 55s in place. wow it idles fine and cruising at low rpm light load is fantastic as well. re set the tune on the tmax and will give it along run and then take it to the dyno. thanks again to all of you. Max

[autoworker]

Glad it worked out for you.The 55's aren't a bad cam.

[To The Max]

Just need to thank you guys for all the input and to let you know what happened. in the end I just increased the comp to 10.5 . well it fixed the bad idle and really improved the light throttle cruising  and increased the low end and all that before I touched the tune. I have now improved the tune and the thing runs great. thanks again guys

[Don D]

Glad to hear
BTW I have a lot of experience with the TW55 and it needs high side compression to work well then it hauls right off idle and has decent low speed manors. Same comment for the TW67

[sfmichael]

For all the guys that gave good advice to me, just thought I might let you know the outcome. my mate sunny jim let me have his 107 barrels and s c cnc heads which we set to 10.5 and left the 55s in place. wow it idles fine and cruising at low rpm light load is fantastic as well. re set the tune on the tmax and will give it along run and then take it to the dyno. thanks again to all of you. Max