Comp cam xe274h power brake issue???

[steve340demon]

just put this cam in my 340, it has power brakes do u think there will b an issue with p brakes????

 

[JoeDust451]

just put this cam in my 340, it has power brakes do u think there will b an issue with p brakes????

No there shouldn't be if its tuned in right, that cam can get close to 13 inches manifold vacuum or there abouts.

 

[steve340demon]

ok thanks

 

[OldmanRick]

I've run 230 degree cams with 9.5to1 compression before. Had about 11" of vacuum and wasn't a problem for the type driving i did, mainly light cruising and some strip passes. Didn't like repeated hits on the pedal as it would get a little firm. If you try it out and have any issues you can always add a vac. storage canister.

http://www.summitracing.com/parts/SUM-G1464/

 

[fishy68]

I had that same cam in a 360 with 9.8 to 1 compression and it only pulled 9 inches of vacuum in neutral. Going down the road it would go up to 15 but not idling. I doubt it'll work good with factory power brakes. May work with an aftermarket dual diaphram booster.

 

[autoxcuda]

just put this cam in my 340, it has power brakes do u think there will b an issue with p brakes????

I get around 14 inches too with a 274s solid cam. BUT, it's a stroker 416 motor.