What year trucks come with the 454 tbi and what is the lph on these injectors.

 

1987-1995 on light duty, 1996+ on HD The 94+ should be avoided if you are looking for injectors, they run 46 lb/hr 4.3 injectors at 32 PSI. The regulator works well when used with other injectors and a better fuel pump.

The 454 injectors vary from 75-80 lb/hr.

 

Fast:

what do you think of using the high pressure 7.4 inj's on an low HP V8 F body application? granted you need a high pressure(TPI) pump but the advantage may be better overall fueling. chev went high pressure TBI for a reason 1995

i just so happen to have 2 brand new inj for sale(cheap)from a new 96 454 tbi !!

 

They did it to thwart vapor locking.

 

As a side effect it helped clean up the emissions and provided better fuel atomization. I run my 68 #s at 32 PSI to feed my engine. The fuel cone is much better than at 12 psi. I have feed a 350 with 4.3 injectors at about 20-25 PSI, works well. The "High" pressure injectors are around 70# hr at 32 psi.

 

i pulled my 7.4 L inj's out of new GM TB(1995-1996)and gave the part # to turbo city. they state 43 lbs. seperately i asked what lbs FP they are run at. this was looked up by my local GM dealer and i think they said 32-36 lbs?