holy sh#t , thing goes pretty good huh, sounds awesome..ill be buying it Wednesday,after that ill get a walbro 255 and 42lb injectors correct?

 

Get the pump do a search for the summit part number it might come up, the injectors I think you'll be safe with 5 psi. I'm at 63% injector duty cycle with 60lb.

 

theres guys on here run 15-20 psi on stock bottomends

 

you guys are saying at 5psi 42lbs will be safe or stock injectors will be safe

 

42lb youll be close to maxing out at 5 psi i believe- who's doing your tuning?

someone else could chime in that would be awesome

my stock injectors were basically maxed out with just the cam.

 

42s would be fine up to 8-9 psi. I had the whipple on my 5.3L with a 216/224 115lsa cam and 3200 converter. Truck was a blast to drive. Just make sure you delete the whippletronics and just run a good tune. You need to relocate the IAT sensor to the pressure side as well to make it safe.

Edit: I ran a stock fuel pump and it was fine at 7psi