36# injectors okay with E85? - LS1TECH - Camaro and Firebird Forum Discussion

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36# injectors okay with E85?

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Old 05-15-2018, 09:41 PM
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Default 36# injectors okay with E85?

i have a 99 T/A itís got heads, cam, intake, and 36# Bosch injectors. Car makes around 420 to the wheels the heads are TAP stage 2.5 5.3 heads so they bumped up compression a bit. I was wondering if my 36# injectors will be good enough for a E85 swap? Iím planning on getting a Walbro 450 fuel pump then throw it in then go get tuned for E85. Just wanted to know if those injectors will be fine
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Old 05-15-2018, 10:58 PM
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Not even close, I run 83lb injectors at 53psi to supply enough fuel for 550-600hp at the crank and my other setup uses 16 66lb injectors to supply 900hp at the crank.

Using an online calculator for 420hp NA on E85 you would need over 50lb injectors.

The LSA injectors are 52lb but I would want a little bigger to be on the safe side.

Last edited by LLLosingit; 05-15-2018 at 11:09 PM.
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Old 05-16-2018, 12:01 AM
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Originally Posted by LLLosingit View Post
Not even close, I run 83lb injectors at 53psi to supply enough fuel for 550-600hp at the crank and my other setup uses 16 66lb injectors to supply 900hp at the crank.

Using an online calculator for 420hp NA on E85 you would need over 50lb injectors.

The LSA injectors are 52lb but I would want a little bigger to be on the safe side.
yeah I was thinking about getting 60lb ones. Do they make any 60lb ones that work with LS6 fuel rails? Probably a dumb question but just trying to learn about all this
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Old 05-16-2018, 03:51 AM
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I make around 450 rwhp and my 42's were at 90% when I tried E85. No way would 36's make it for you
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