Out with the 340 & in with the 410 stroker!

redfastback said

I am running just shy of 11:1, at about 200-205 psi per cylinder. Can't recall my chamber shape. Edelbrock says that their heads like 35* total. I myself need more cam. I am running the 274xe. Good cam, but my motor wants more.

IMO, you seem to have alot of duration/lift for the cylinder pressures you stated.

Click to expand...

You mean too high or too low?

Thats just what they are, the cam is in straight up almost- 109.5 installed
It is a custom grind, I had them widen the CL from 108 to 110 which in turn being a really fast ramp already left no room so the lift/adv duration was decreased & increased a lil.
Heres the original specs..
Part #: 4403-V
Grind #: KV-3
Int. 575" Ex. 575" lift changed to .573
Int. 281*" Ex. 281*" running duration changed to 284*
Int. 383" Ex. 383" lift @ lobe changed to .382
Int. 250*" Ex. 250*" @ .050 duration changed to 252*
108° lobe center/cl changed to 110*

And run w/1.6 rockers [less than ideal geometry=.560 @valve after lash] but didn't wanna go that big lift anyways, so I'm happy for now with the .560 lift, works well with the heads lift/flow range.