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Cam suggestions for 95 " TC

Started by SwedishMeatball, August 22, 2023, 10:10:16 PM

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Adam76

Quote from: WhipLash96 on October 03, 2023, 03:41:39 PMI would give the S&S 570 a hard look. I ran that cam in my 01 bagger with a 98". That cam likes a little more compression which it sounds you have covered. Although I wasn't using Super Stock heads, I was using a 1.94" intake and 1.625" exhaust. I would not go larger than an 1.750" diameter head pipe or larger than a 3" muffler though.  I swapped mufflers to a 4" and that cam fell off.

I know this is an old post, but the 570 cams come up quite a bit when folks are looking for cam upgrades.... I  ran them in a 95" build at 200ccp and I still found them sluggish below 3000rpm.

Is there a way to get the 570s to kick in with earlier TQ ?

Thanks

838

October 25, 2023, 06:45:33 PM #26 Last Edit: October 25, 2023, 06:56:36 PM by 838
Quote from: Adam76 on October 25, 2023, 04:05:00 PM
Quote from: WhipLash96 on October 03, 2023, 03:41:39 PMI would give the S&S 570 a hard look. I ran that cam in my 01 bagger with a 98". That cam likes a little more compression which it sounds you have covered. Although I wasn't using Super Stock heads, I was using a 1.94" intake and 1.625" exhaust. I would not go larger than an 1.750" diameter head pipe or larger than a 3" muffler though.  I swapped mufflers to a 4" and that cam fell off.

I know this is an old post, but the 570 cams come up quite a bit when folks are looking for cam upgrades.... I  ran them in a 95" build at 200ccp and I still found them sluggish below 3000rpm.

Is there a way to get the 570s to kick in with earlier TQ ?

Thanks

Yup... more cubes!

If you Look in the dyno section it looks like it starts to become more torque oriented at about 107. I run this cam at 10.3:1 In a 117 and it's a tractor... real fun setup it's in the dyno section. It was sumping in that run too... builder error (me 🤦‍♂️)...

Cubic inches changes the cam characteristics...

Upping CCP might help some, the old rule on the 570 was around 10.1 but that's under 190ccp and guys are rolling 205-210ccp street bikes all the time now (with a good tune) don't know why you couldn't with the 570... pipe choice might help a bit,