TBI injector size question

[markinnh]

I am building a stroker engine, its a 400 crank kit going into a 305 block bored 30,000 Should I use the 305 injectors or 350 injectors? Or possibly even the 4.3 injectors since the flow rate is 40 psi for 305, 45 psi for 305 and I believe
the 350 injectors is 55 psi.

[Tink]

I'm VERY interested in your build... (we've got a built 305 in a 69 Nova) I think the injector size is going to depend on your other mods as well - can you tell us more (cam size, heads, exhaust)? The 305 in the Nova is running a 670 with 70 jets in it, which is more than we were running on a milder built 350.

[markinnh]

well the cam specs I will have to get back to you on because my shop is 30 miles away and I am ot going there again till next week. The heads are 305 vortecs that were shaved to up the compression a bit. The intake is an edelbrock performer for vortec heads with a holley adapter to TBI. I modified the TBI unit according to TBI specialties website. Exhaust is headman headers with a 3 inch pipe going into a 3 inch cat con then into a 3' inlet flowmaster 40 out to dual 2.5 tailpipes. This is all going into 1989 Astro van (DJ Vehicle)

[neo71665]

I'd go big to start with. Engines can handle a bit rich better than too lean.