hello i was wondering if i get a 383 will my stock intake manifold and my fuel injenction from my 350tpi will work good? will it give me any problems? thanx

 

It will work, but it will choke the engine. You need to port the plenum and runners, and intake manifold at a minimum. An aftermarket intake like the Stealth Ram or Super Ram would be FAR better.

 

thanx, so i just need to port the plenum, runners and intake manifold? will i have problems with my comp?

 

You'll benefit a lot more from programming, than from porting to the physicals. You'd be surprised at what the stock parts can make on a 383. Torque happy, yes, but a GREAT street engine!

 

So programming the computer would be better than porting? Where can I program it?

 

It will certainly need programing, but I'd port all that stuff while I was at it. TPI is pretty restrictive as it is on a 350.

 

I've seen a heads & cam only....stock throttle body, stock plenum, stock runners & stock intake (+programming) make 410hp/501ft lbs that made. And the engine looked stock, except for the headers, afterwards

The heads were a big contributing factor....TFS heads.....But that shows that the stock upper parts can support power.

Granted.....Edelbrock runners & an intake bumped the same combo by 25hp (torque only went up by 1 ft lb) , but those parts aren't cheap for only 25hp & I have no idea what kind of/if more programming was done.

Just by extrude porting the plenum & intake, adding big tube runners (probably tuning too) & a 52mm throttle body, it hit 451hp/534ft lbs torque!

 

Thanx for the advice! Do you know where I cant have it program?

 

An Accel DFI was used instead of the stock type PROM, so that tuning changes were much easier than burning chip after chip after chip, to see what/if improvement was made (or lost) after the parts changes.

 

Kid, in all seriousness... you dont have a CLUE what you're doing... dont do it..

edited

 

Heh. I topped a mild 383/700R4 combo in my ol' 1990 Vette 'vert with the factory TPI. It may not have been the fastest car around, but boy was it fun to drive. Lurid power-slides were but a stab of the throttle away at any RPM. Buy tires...you'll need 'em.