Heads.

 

2-1/4" is the perfect size pipe for that engine. I wouldn't push it out to 2-1/2 unless he gets it up over 350hp.

 

I have a 68302 that I'm puting in my 67 not going to mess with the numbers maching engine!!I'm going to put a edelbrock performer rpm top end kit on it it sould be go for 350 to 365HPhttp://store.summitracing.com/partde...p;autoview=sku
good luck....

 

it works with the stock engine!! and you can mod it later down the line thats what I plan on doing...

 

You should tell us your price range. If you dont have one:

TWIN TURBOS

 

my price range is as cheap as possible right now
but i would also like ideas where price is no object just so i no what to do down the road

 

Monte carlo bar and export brace both are cheap and stiffen up the front end alot.

 

so should i keep my stock heads and them moddified? if so what should i have done? or should i just buy performance heads for it?

 

Aftermarket heads are best, but pricey. BTW, headers are the best bang for the buck for a bolt on performance increase that you can feel.

 

IMO it's not worth it to put money into the stock heads unless you absolutely want the original heads. For a complete rebuild includingbigger valves, hardened seats,pushrod guideplates, screw in studs, springs, and some mild porting, expect to spend a good $600-800 and come out with a set of heads with a mediocre flow rate. For a couple hundred more you can get a set of World Products Windsor Jr's that will flow better (damn well for cast heads) out of the box, and for a couple hundred more than that you can get a set of even better flowing aluminum heads.

I'd wait to do the cam until you can afford heads. The cam and heads should be matched to eachother performance-wise.