Will My TPI set up work on a 350? Would i need to change anything? any help would be great!

 

The actual TPI intake, runners and plenum will work just fine, they are the same ones as used on the stock 350's. For injectors, if the engine isn't a real powerhouse you'll be fine with the 19 lb ones from the 305, just up the fuel pressure about 5 psi. You should get the 350 knock sensor for it and at least get a scanner and or laptop/software so you can monitor the engine and see how it is running. Then decide if you need to burn a custom chip or not.

 

What about the intake manifold? Can you use the 305 intake manifold on a 350? I heard you could.

if so, would it be too restrictive?

 

See the first 4 words of the above post.

 

Does the engine block have to be from a 1987 and up? Im thinking about getting new injectors 23lb for about $300 for all 8.

 

The block itself makes no difference, its the heads that matter. If you have an 85-86 base (or a vette base) you'll need the early style heads or vette heads. The later base works on the newer heads with the center 4 bolts at a different angle. The intake base can be modified to work on either setup but requires some minor machining to the center 4 bolt holes.