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-   -   LE2 H/C Question (https://www.camaroz28.com/forums/lt1-based-engine-tech-9/le2-h-c-question-518074/)

LT1_King 04-30-2007 12:43 PM

LE2 H/C Question
 
hey guys i have a stock rebuilt 355 LT1 with stock internals. i was wondering on a heads and cam package like the LE2 would i have to use bigger injectors? is it really necessary? i know i have to do all the bolt ons but i just was wondering if i HAD to go bigger. this is going into a 94Z A4 Camaro.

MEAN LT1 04-30-2007 01:42 PM

Some 30lb injectors should be fine unless you plan on sprayin.

94/96ZsM6s 04-30-2007 01:52 PM

on a N/A 355 you shouldn't have to upgrade injectors. just make sure the fuel system itself is in good shape(pump, filter, regulator and injectors). i know of a guy who took a 93 Z, stroked it to a 383 and put the stock heads untouched and 19pph injectors and it worked fine. the car sounded great. 94'Z's and up have 24pph injectors...you should be fine

LT1_King 04-30-2007 02:26 PM

i plan on spraying but not till about next year or so. i'm gonna do the build this summer. so should i stick with the 24's for now? how much do new fuel injectors run. say like accel. or is there a cheaper brand? i will probly spray a 100 shot with the H/C but thta's till next year.

z28_theantirice 04-30-2007 03:43 PM


Originally Posted by LT1_King (Post 4574168)
i plan on spraying but not till about next year or so. i'm gonna do the build this summer. so should i stick with the 24's for now? how much do new fuel injectors run. say like accel. or is there a cheaper brand? i will probly spray a 100 shot with the H/C but thta's till next year.

Stay away from accel. Either way you look at it, you need bigger injectors for your head/cam combo, go get some Racetronix 36'ers and be done with it 300 bones

TQdrivenws6 04-30-2007 03:46 PM


Originally Posted by 94/96ZsM6s (Post 4574103)
on a N/A 355 you shouldn't have to upgrade injectors. just make sure the fuel system itself is in good shape(pump, filter, regulator and injectors). i know of a guy who took a 93 Z, stroked it to a 383 and put the stock heads untouched and 19pph injectors and it worked fine. the car sounded great. 94'Z's and up have 24pph injectors...you should be fine

Um...

I strongly disagree. It may have worked for your friend's 383, but an LE2 package needs SVO 30's at a minimum. Of course unless you want to run a significantly higher fuel pressure than factory to bandaid your injectors being undersize for the application.

2000GTP 04-30-2007 04:42 PM

On Lloyd's site, for that combo he recommends 30-36# injectors.

Javier97Z28 04-30-2007 05:30 PM


Originally Posted by 94/96ZsM6s (Post 4574103)
on a N/A 355 you shouldn't have to upgrade injectors. just make sure the fuel system itself is in good shape(pump, filter, regulator and injectors). i know of a guy who took a 93 Z, stroked it to a 383 and put the stock heads untouched and 19pph injectors and it worked fine. the car sounded great. 94'Z's and up have 24pph injectors...you should be fine

And his car is probably another 13 second 383 LT1....

You need to step up to at least 30lb/hr injectors. That's what I'm running.

mobleman 04-30-2007 09:10 PM

I ran my LE2 heads with the stock injectors for a few weeks.. Swapped them out for some used 30# SVO injectors and really noticed a difference at higher rpm's. Unfortunately I don't have any datamaster runs before or after showing the difference in injector duty cycles at higher rpms..

lt1chevelle 04-30-2007 11:09 PM

i just ordered some 37lb for my le2 heads and gm847 combo, thats what loyd recommended and i think they were like 295 and some change

JP95ZM6 04-30-2007 11:45 PM

+1 for Racetronics.

LT1_King 05-01-2007 01:51 AM

cool. where's the cheapest place ot buy the racetronics.

JP95ZM6 05-01-2007 06:13 AM

Direct from them is the best I found, $280ish:

http://www.racetronix.com/621037.html

At 37#/h you have a little room to grow, and from what I read the Delphi/Lucas style has a good pattern and is resistant to fouling. Good luck.


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