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View Full Version : LS1 fuel line & pump expeirences / ?'s



Takid455
03-13-2009, 08:03 AM
For those of you with modified LS1 engines, did you need to change your fuel pump or system? how much power can the stock unit support? anyone running 500+HP/ 600TQ on a stock unit? If the pump was changed, did you increase the size of the lines?

Although the stock ports measure 3/8" OD, there are about 1/4" ID whereas a steel 3/8" OD line is about .33" ID.

Dynoguy
03-27-2009, 11:21 AM
I ran a 427 CID and a D1 Pro Charger to 485HP@wheels on stock fuel system with no drop in fuel pressure or signs of lean-out on the dyno

CarlC
03-27-2009, 11:51 AM
Check my website. It will easily support 600hp.