using low lift cams with high spring pressure

[WideWildGlide]

Is there big negative other then power robbing? i have 266 and i wanna pull them out and try Kury Tc-24d for 1 night at drag strip maybe even keep them in if they work better, i have 110+ heads on a 120r(10.4 compression) spring look same as the MVA head not sure spring pressure but its SE spring so i know its up there

[PanHeadRed]

You'll be fine 175lbs is about right for a lot of performance of applications.

[Ohio HD]

Less lift will equate to less pressure when open. Closed the same of course.

[Y2KRKNG]

I've got this situation with my build. Branch heads/springs (heavy) was running 585 and 625 cams now running 37s with the same heavy springs.

[WideWildGlide]

ok thanks for input guy i will swap em out maybe i will get lucky and see a improvement on ET's

[No Cents]

 The seat pressure for the stock springs MVA, and the 110+ heads...is 195 pounds.
SE part# 18281-02A.
It states in the SE catalog that these springs are used on those heads.
I would go for a spring with less seat pressure...AV&V .650 lift beehive springs work great!

[WideWildGlide]

The seat pressure for the stock springs MVA, and the 110+ heads...is 195 pounds.
SE part# 18281-02A.
It states in the SE catalog that these springs are used on those heads.
I would go for a spring with less seat pressure...AV&V .650 lift beehive springs work great!

i would so change the spings i keep hearing how to much pressure but i dont have ability to get those spring and gasket before friday,im still chasing after the high 6's in 1/8th just try what i have laying around

[Matt C]

I've got this situation with my build. Branch heads/springs (heavy) was running 585 and 625 cams now running 37s with the same heavy springs.

Y2; How do those 37s stack up against the 585s? Did you happen to get any dyno pulls? TIA

[Matt C]

reason im asking is b/c i'm planning to do a 95 for a friend and I was considering 585s or the old go-to
37Gs

[No Cents]

reason im asking is b/c i'm planning to do a 95 for a friend and I was considering 585s or the old go-to
37Gs

don't discount the Fueling 543's for that 95"er.
an overlooked cam that pulls like a freight train.
check some dyno sheets out with that little Fueling cam!

http://www.feulingparts.com//dyno/95/27.543REAPERCAMS200395ROADKING.jpg

[Y2KRKNG]

I've got this situation with my build. Branch heads/springs (heavy) was running 585 and 625 cams now running 37s with the same heavy springs.

Y2; How do those 37s stack up against the 585s? Did you happen to get any dyno pulls? TIA

The 585s were done by the PO and way back in 2002, I have the Dyno from it then but standards may have changed. Back then it did 103hp @ 6.4 and was still climbing and 99lbs tq at 4.5(with a desent curve)
The biggest problem and reason for change was the PO got bored with it and couldn't leave well enough alone so here come some (Too) big 625s on a 9.3-5:1 motor ( ) I got the bike somewhat on the hype of the PO but also because of the low miles of bike and freshness of the top end and V. trane. Soon realizing what I had(from knowledge here) I wanted quickest cheapest way of getting CR and cams in harmony, Hence the 37's.
Long story longer, no dyno on 37's yet to compare but the bike and rider are much happier. Probably left some on table by not tearing everything apart and setting CR and using a bigger cam, but that's how it goes.