LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

Injector size

Old Mar 19, 2004 | 11:32 AM
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Question Injector size

are 30lb injectors good enough for LT4 conversion kit or should I go with 36lb?
Old Mar 19, 2004 | 11:45 AM
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30lb is just fine.
Old Mar 19, 2004 | 11:54 AM
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how much hp are the 30lb injectors good for?
Are the Accel injectors good to use?
Old Mar 19, 2004 | 12:17 PM
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When you're talking about LT4 conversion... Are you talking about the LT4 intake, LT4 cam (hotcam?), etc?

If so, the stock injectors will work fine to around 390-400 rwhp, which isn't even close to what a "LT4 conversion" will give you.

Mike
Old Mar 19, 2004 | 12:50 PM
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bored .030 over, LT4 intake, LT4 hotcam, LT4 heads, hooker LT's, hooker y-pipe, cold air, crane ignition, 58mm TB
Old Mar 19, 2004 | 01:42 PM
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Cool

If so, the stock injectors will work fine to around 390-400 rwhp,
I tend to think that's pushing it a bit. The general rule is it you have to go over 80% duty cycle, you need bigger injectors. Can't remember who but someone said they are using stock injectors in a 383 with like 370 RWHP and runnig a duty cycle of 90-95%. Thats too high. I'd be safe and get bigger injectors.

my 2 cents worth
Old Mar 19, 2004 | 05:30 PM
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My guess with the LT4 "conversion" is 350-360ish rwhp. I think injectors won't be necessary.

Mike
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