i have a 1982 T/A with a Cross-Fire Injected 350 and my engine has trouble after 3500rpm and wont go over 4000 rpm. is that the fuel pump or what. help me out here. Thanks

RED82TA5.7L

1982 Pontiac Trans Am
Cross-Fire Injected 5.7l V8
Mods: swapped 305 with a 350 4-bolt main, Proform 1.6 Roller Rockers, electric fan.
Exhaust. Edlebrock Headers. high flow cat. glasspack right after cat(very short exhaust)

 

Could be a lot of things, but since it's a 5.7, who did the swap? Is it still using the 305's injectors? If it has the correct injectors, I'd check fuel pump output, especially if it's still the stock one. Depending on what your fuel pressure is set at a healthy 5.7 could push the limits of the stock pump when new....after years of use probably not a chance it could keep up. If it is the FP, don't replace it with the stock one, go with a higher output one. I have a Walbro unit, but I know others have gone to 85TPI vette ones with good success.

 

well. it has the same injectors as the 305. me,my dad, and a friend did the 305 to 350 swap. so that could be the problem. the injectors. where can i get injectors for a 350 cross-fire injection and how much will they cost.well. first im going to get a high proformance fuel pump. if that dont work then i could be the injectors. thanks

RED82TA5.7L

 

Be smart and visit my site first:
http://www.crossfire.homeip.net

The injectors are 66#/hr units.
You really want to wait and do some mods first and use larger injectors to support more power.

Marck

[This message has been edited by FAQman (edited October 05, 2000).]