I have a 350 tpi 1990 firebird, basically all stock. injectors are shot and they can't be cleaned already talked to rick. was size injectors should i go with accel 21 or 23.i ahve a n adjustible fuel pressure regulator. also, are the svo ford injectors an option, what size and what should i set the pressure at?

 

The stock size for your engine is #22, some people are running #24 injectors in theirs. Most people set their fuel pressure between 46 & 50 psi for a TPI set-up.

 

Just posted results from my injector swap last week:

https://www.thirdgen.org/techbb2/sho...hreadid=251204

I'd say 23 or 24 lbs inj. would be about right for any 350 TPI.