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TaKid455 · 03-13-2009, 09:29 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.

03-13-2009, 09:29 AM	#1
TaKid455 Join Date: Oct 2008 Posts: 586 iTrader: (1)	LS1 fuel pump reviews & ?'s 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.