Can you bore a pontiac 350 engine to a 383 or just sm block chevys? ?

I know pontiac and chevys are different.. but I'm trying to get the best hp out out my 69 5.7L pontiac. 389 and 455s have become difficult to find or really pricey.. what would I be able to do to compete with a 396 chvy???Can you bore a pontiac 350 engine to a 383 or just sm block chevys? ?
Put the right cam in it and you would be shocked.



I'm the camshaft source for the largest Pontiac race engine builder in the world, and also most of those who make any headlines with Muscle era Pontiac's. Think solid lifters and 108 Lobe Separation Angle cams. Use the right parts and the valve train will not make noise and you will set the lash and forget it. No constant adjustment issues. The Solid has ALOT faster ramp on it than they hydraulic which will put ramp intensity in there. That will allow you to get the job done with much less total 'seat to seat' duration, which will keep reversion out of the intake port and make the cylinder head put ALOT more air into the cylinder because it will make so much more air velocity in the intake port.



How you would cam a 350 is not how you would cam a 389 or a 455. How I cam a 396 Chevy would be far from optimum for a 454 Chevy. I am not simply talking about how you cam them in terms of how much cam duration. I am also talking about the different ramp shapes and ramp speeds, and lobe separation angles. That's why you won't find happiness in buying a cam that says that it will work in a 455 and it will work in a 400, too. LOL.



Keep your exhaust pipe diameter conservative.



Much of what you can do will also come down to how well you seal the ring up and how well you can get the carburetor to vaporize fuel. Hence, it's not all about air flow.

Done right( I blueprint QuadraJets), you won't beat a QuadraJet.



Get your squish clearances between the piston and the cylinder head TIGHT.



Email: camshaftshaun@gmail.comCan you bore a pontiac 350 engine to a 383 or just sm block chevys? ?
Technically, it can be bored out to a 455, the 455 and 350 Pontiacs are the same block, the only difference is the crank journals and main bearing sizes, and of course the cylinder bore.
In order to compete with a 396, you'll need to get a good set of heads, 6X heads are great heads, specially when ported and polished, your heads are where 75% or more of your power comes from.

EDIT: With a Pontiac a conservative cam is best, match your cam and intake and always degree your cam. A radical cam will kill your performance on a Pontaic, don't ask me why but it does.
And Shaun is right also, if you can afford a custom ground cam for your motor, that would be best, If you buy a 400 cam for your 350 just to have the cam sound, you'll kill the performance. Shaun can custom grind a cam for you to meet your engines exact specs and what you want out of your engine.