ok im doing the ever popular 350 carb swap on my 91 305tbi firebird i need some help picking a cam that will be good while the engine is close to stock and will do better when i start modding it. i know i should just get everything done befor the engine goes in but i ran out of cash and my engine is dieing fast. right now im gonna be running a 650cfm performer carb on a stock manafold with stock 350 tbi heads flat top pistons should have around 9.5:1 compression. its got a set of headman headers . later on im gonna put a vortec setup on it and rebuild the tranny with a 2800stall verter and some 3.42 gears what do you guys think would be a good cam for it. oh yea the cam needs to be hydraulic flat tappet its not a roller.
thanx

 

I think a Comp XE268 would be a nice choice, but not with those heads.

 

if you plan on swapping heads later and are going to tear down the motor that far I say use a stock cam or one you can find mega cheap for now then mod it later and add the cam that fits accordingly... just my .02

 

will a stock cam feed a 383 worth anything or is it still gonna feel like im driving my 305 till i get it all nice and modded.

 

"Stock cam" is an undefined term. There are too many out there. Most "stock" factory cams would make a stump puller out of a 383, but that's about all you can say.

 

I agree with chris5k, to run a decent cam you a: need good flowing heads ( the TBI heads are crap ) and b: you need the proper valve springs on your heads as per cam recommendation. So go with the stock cam that's in there now or one that's stockish or a bit bigger so you don't have to change springs or worry about valve to piston clearances and torque converters and whatnot. Once you are ready for heads and a cam,that extreme energy 268H is a great choice, it's actually what I'm running in my car, it says biggest cam with stock converter but it's a lie, with the stock converter my car was a dog off the line, now I have a 2800 stall converter with a bullet proof 700R4 and it's deadly.