55* 50* vs 45* valve angles

i was just curiuos cylinder head gurus , on my cylinder heads would the stepper valve angle help out the velocity on the hight lift ?

im really not worried about longevity on the valve job since i only race a handful times a year

thxs for the input

bruno wrote:i was just curiuos cylinder head gurus , on my cylinder heads would the stepper valve angle help out the velocity on the hight lift ?

im really not worried about longevity on the valve job since i only race a handful times a year

thxs for the input

Bruno,

A possibilty is that the 50* valve angle might work okay, but "no" on anything steeper. When doing steep valve angles, it's not just a matter of switching the valve job around, but the chamber shaper has to be compatible with the steeper angles. Meaning that that chamber shape of the Edelbrock heads is not the most conducive to a steep angle valve job. One would need to sink the valves some in order to help make it work.

Charlie

Thxs, ....do you do the same for intake and exhaust

just using a different type of valve can help, sometimes the flowbench can be a little misleading, this is where the wetflow come into play, even if the air says no, the fuel can follow better into the chamber.

BOSS 429 wrote:just using a different type of valve can help, sometimes the flowbench can be a little misleading, this is where the wetflow come into play, even if the air says no, the fuel can follow better into the chamber.

Charlie put in some frpp a429 2.25 intake valves ...i believe ....is there any better ones for my application ?

You'd be hard pressed to find a better flowing s.s. intake valve than the A429. The "better" intake valve would be made of Ti.

Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat

Amen !

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat

I was just being inqusitive .......

605FOX wrote:Bruno , you do too much reading ....just increase the comp and get a real cam ....and let the damn thing eat

Funny I was told this at the seminar.

Didn't Darin Morgan even mention that the "exotic" valve angles are only worth a few HP on the dyno? For most builds just use the typical angles and enjoy it...

Nick, While valve/valve job evolution , a bigger cam , etc. may give some gains , that is not the bang for the buck.

With a 50 degree valve job you can use more duration. If your cam is already to small then it certainly won't help.

rmcomprandy wrote:With a 50 degree valve job you can use more duration. If your cam is already to small then it certainly won't help.

everybody keeps on saying his cam is too small ....... Bruno why did you go with such a small cam ?