Does anyone know if you can switch the fuel injectors from a LS1 99 into a 87 IROC TPI?

 

I'm not sure if they will fit, but compare you engine size and HP output to the LS1. If you get and adjustable fuel press regulator, then using stock injectors are fine on a stock engine. Although I prefer the MULTEC style as opposed to the PINTLE style. All injector flow #s are at 43.5 PSI, measured in lbs/hour. The 305 has 19lb injectors, and the 350 has 22lb. More fuel for stock engine = very rich. At Wide open Throttle, the oxygen sensor is not used, and the mixture would be rich.

 

hey i want to increase my fuel pressure to 50 psi should i get 24# injectors instead of my 19# on my 305? thanks

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1987 Z/28
305 tpi
flame red w/black luver hood... ahh nice che bella

 

LS1 injectors are different than TPI's I believe the LT1's are the same though.

 

Unless your motor is modded, you don't need 24 lb'ers. You can raise the pressure on your 19's to 50 however.