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

Injectors?

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Old Jan 3, 2007 | 10:48 PM
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Default Injectors?

I am gettin some bigger injectors for my 355, and i need to know if lt1's are high or low impendience, and the car seems like it falls off on top end like in 3 and 4th gear abour 4k rpm, is it possible it is running out of fuel?
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Old Jan 4, 2007 | 03:48 AM
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Why do you think you need bigger injectors? maybe yours are dirty and need servicing or same size replacement. You can go for bigger injectors but that will require a retune.
If you're sure the injecters are clean and the fuel pump is fine, find out what's the duty cycle and if it's higher than 90%, get bigger injectors.
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Old Jan 4, 2007 | 06:19 AM
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No mods listed, we dont know whats done. Heck its probably needs a tune. Unless your pushing 400 rwhp n/a most times it can be done with tuning.
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Old Jan 4, 2007 | 10:13 PM
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its a 355, 11.1 compression forged pistons, LT4hotcam (the whole kit), fully balanced internals, stock heads ported and polished, 3 angle valve job, port matched intake manifold, long tube headers, 3inch true duals, MSD pro billet distributer, intake elbow, and the PCMforless tune! BUT the things that are killin me is i am running the stock throttle body, intake, and injectors! but i will def. check fuel pressure and the motor only has 1500 miles on it and the injectors looked good when i put them in! Thanks for the info guys!
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Old Jan 4, 2007 | 10:49 PM
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Originally Posted by olegreen94
BUT the things that are killin me is i am running the stock throttle body, intake, and injectors!
My old Camaro went 6.57 in the 1/8th last week at 3200lbs running 24lb injectors, stock intake, stock throttle body, and unported heads. The sixty foot time was 1.29!

Daren
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Old Jan 4, 2007 | 11:40 PM
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well my car runs great on bottom end, and ya i am talkin about the cold air intake, i just have the stock box right now! but i have a set of 32lb accell injectors but what will it do if i put them in and dont get it retuned?
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Old Jan 4, 2007 | 11:47 PM
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Originally Posted by 96slow6
On what tires? If it isnt a full race prep set of slicks i would have to raise the bs flag on the 1.29 60'
This is the car at the IHRA World Finals.

http://www.ihra.com/gallery/index.php?g2_itemId=233276

The motor is a N/A LT1, .060 over, stock lift, and even has stock stamped rockers! Sorry, but no BS here.

Daren Poole-Adams
IHRA 9043
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Old Jan 5, 2007 | 07:58 AM
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The tires are 9" x 30" Mickey Thompson ET Drag Radials on 10" rims.
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