im completly rebuilding the top end on my LO3. heres what im doing: LT4 cam, 1.6 roller rockers, edelbrock performer tbi intake, 081 heads maybe ported maybe not, headers, full exhaust all the way back, open element, ultimate tbi mods,all the smog junk is removed, and i will b doing chip burning. im trying to find out if my stock fuel delivery system will support this, or will i need an adjustable fuel pressure regulator and/or a bigger fuel pump?

 

I would at least go for a pressure regulator for the sake of protecting the new motor...

 

any other suggestions?

 

your stock pump should have no problem feeding that.

 

should i have enough fuel pressure from the stock fuel pressure regulator?

 

i would put in an afpr for tuning sake...you will probably end up needing more pressure.

 

thanks