LT1-LT4 Modifications 1993-97 Gen II Small Block V8

can i go to big?(injectors)

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Old Mar 24, 2006 | 11:31 PM
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Default can i go to big?(injectors)

the stock ones were not going to cut it so while i was looking for some new injectors i came across a good deal on some #42's. will these be over kill? my setup is not extreme, just a cc305, 1.6 rr, headers w/ full exhaust, cai, and just about every other bolt on with a 6a box. if they are to much, is it something that can be fixed with a tune? i plan to have it dyno tuned. just worried that it will always be rich no matter what.
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Old Mar 26, 2006 | 08:01 PM
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T.t.t.
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Old Mar 26, 2006 | 10:23 PM
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For a CC 305 stock 24# would be fine. If you dont believe me research this very subject throughout several forums.
That cam isnt that big.
I have friends running 10's with 24# and 30#'s on stroked engines. And there duty cycles are not saturated, but around 85-90%.
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Old Mar 27, 2006 | 08:20 PM
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No probs out of 30#s for me. Duty cycle is always less than 90%. The 42#s aren't overkill necessarily but it makes a bigger hurdle in tuning.
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Old Mar 28, 2006 | 11:44 AM
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yeah i know its not a big cam. i will eventually go alot bigger, but i'm on a budget right now and i basicly got this cam for free. but thanks, what i needed to know. i was just worried about them being so big it would make it impossible to run right because of being so rich.
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Old Mar 28, 2006 | 11:59 AM
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You should be fine. It won't run rich as long as it is tuned correctly.

Dyno tune is not really even needed, just need to set the injector constant properly.
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Old Mar 28, 2006 | 10:11 PM
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yeah... it is a tuning thing. I am getting 42# SVO ford injectors because they are $250 for a set.... and i will have a stock LT1 with 6 psi of boost
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Old Mar 28, 2006 | 11:50 PM
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42lb injectors at 6 psi of boost in my opinion is overkill. The only way I would go 42's is if your planning on increasing boost. You can get them to run but the tune has gotta be dead on. I ran that size injector with 8lbs of boost and even with a good tune start up was a PITA. 36lb would have been perfect.
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Old Mar 29, 2006 | 12:19 AM
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Originally Posted by Lethal Z
42lb injectors at 6 psi of boost in my opinion is overkill. The only way I would go 42's is if your planning on increasing boost. You can get them to run but the tune has gotta be dead on. I ran that size injector with 8lbs of boost and even with a good tune start up was a PITA. 36lb would have been perfect.

i haven't looked to see if there was a cheap alternative.. like 36# for $200-250...
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