What injectors ru using on your 402
03-28-2007, 12:25 PM
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What injectors ru using on your 402 What kind of injectors are you using on your 402, I have 36lb fast injectors they are at about 93% duty cycle. I just got it tuned and I was wondering If I could squeez some more power out of my engine with larger injectors?
03-28-2007, 03:49 PM
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If you go to an aftermarket fuel rail system you can help relieve your duty cycle down into the 80's possibly the high 70's. A friend of mine did that not to long ago in his Procharged 540 BBC w/FAST EFI. He went from having his duty cycle at 110% down to 93%, just from changing his fuel rails out to a larger inner diameter.
Professional Products makes a new fuel rail w/regulator kit for your LS1/LS6 and for the LS2/LS7.
97'-04' LS1/LS6 is part #10611* (This kit includes a fuel pressure regulator)
05'-06' LS2/LS7 is part #10614
*Also use this kit for engine swaps(Will require a return line to the fuel tank)
Professional Products makes a new fuel rail w/regulator kit for your LS1/LS6 and for the LS2/LS7.
97'-04' LS1/LS6 is part #10611* (This kit includes a fuel pressure regulator)
05'-06' LS2/LS7 is part #10614
*Also use this kit for engine swaps(Will require a return line to the fuel tank)
03-28-2007, 06:47 PM
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From what I have seen 42 lbs injectors seems to be the winning ticket. Z06kern very very impressive Z06 with those et and times on your 402. As I seriously considering runnnig a new set-up (LS2 402) in my 02 Z, I sent you a PM on more info and what size cam is that bad boy running? 
