85 vette

85 vette,aluminium procomp heads, comp roller cam and rockers, cam from comp is for tpi fuel injection 488\496 260, larger intake runners, adjustable fuel regulator, stock exhaust, hyper chip with power stat, runs lean block learn is at 160 fuel pressure turned up to 55psi, after warm up with block learn of 160 runs okay ,terrible cold super lean, figure i need larger injectors any idea how much larger i should go 36lb maybe? i dont want to get into custom burning my own chips right now, i would like to get this running decent with hyper chip i have,

thelast_graham

are you running stock 22 lbs? Try 24lbs from an LT based motor... if you run any more then 10% over stock for injectors.. you need to reprogram!

85 vette

thanks for help i am not sure what injectors are in i assume they are stock, i live in upstate ny anyone know where i can get my computer reprogramed? out of town for few days

transam85dudeman

its a 350 right. whats your timing at. is your hypertech chip a thermomaster. do you still got the hypertech's ###'s off the box or chip? i think 56 psi is too much. try 48, and the injectors should be #24 for the 350. mine are 19#s for my 305