Fuel pressure Question

[95CobraMike]

I just found out the other day that i dont have an adjustable Fuel pressure regulator.....

i was wondering what FP the stock regulator makes

i also was wondering what fuel pressure i should be at with a s/c 306


thanks

 

[95CobraMike]

oh i have a 255 fuel pump, no FMU, and 42 lb injectors

 

[HISSIN50]

stock FPR is ~39 PSI at WOT and 30-33 PSI at idle (assuming double-digit vacuum at idle).

Good luck.

 

[95CobraMike]

thanks hissin

what should i be at?

 

[fiveo'cobra]

With your combo i'm guessing around 44psi at WOT and around 35-36psi at idle. You have all you need to go and get a tune. That would be the best way to determine it.

 

[HISSIN50]

thanks hissin

what should i be at?

I will defer to Fiveo'cobra et al - I did not answer that part before because I dont know.

Good luck Mike.

 

[95CobraMike]

thanks
anyone else have any input?