. 
stock injectors with FM13
Thread Starter
Teching In
Joined: Oct 2002
Posts: 45
Likes: 0
From: NC
stock injectors with FM13 I've just about got all the extra things i need for my cam swap in the spring, but what about fuel injectors. Will the stock 26lb injectors be fine with a cam like FM13 with stock heads? If not, what size do i need, 28lb? Anyone maxing out their injectors with a cam in the 230 range?
Jimmy
2000 Trans am Ws6
Current mods: slp LT, lid, borla cat back, 4.10s, fidanza aluminum flywheel, Spec stage 2 clutch, lots of suspension.
mods waiting to put on: ls6 intake, asp pulley, ls6 ported oil pump, ls2 timing chain, cam, Patriot duals springs or PRC.
Jimmy
2000 Trans am Ws6
Current mods: slp LT, lid, borla cat back, 4.10s, fidanza aluminum flywheel, Spec stage 2 clutch, lots of suspension.
mods waiting to put on: ls6 intake, asp pulley, ls6 ported oil pump, ls2 timing chain, cam, Patriot duals springs or PRC.
Launching!
Joined: Nov 2004
Posts: 246
Likes: 0
the injectors on my 2002 ls1 maxed out with the F13 cam. I get all the "your stock injectors are good to 450rwhp" BS. But guess what? they werent! In my case they were run to 111% Duty cycle just to get her tuned. Candy at FMS told me that they were begining to hear this more often. Good luck
TECH Enthusiast
Joined: Dec 2003
Posts: 535
Likes: 0
From: Warner Robins, GA
Racetronix is having a special on their Delphi 32# right now. They flow 36.5# at 58 PSI and would be a good choice with room for expansion.
Last edited by jub jub; Feb 9, 2005 at 02:49 PM.
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Verdad Gallardo
Awesome K5 Blazer Restomod Comes With C7 Corvette Power
Verdad Gallardo
10 Camaros You Should Never Buy
10 LS Engine Myths That Refuse to Die
Verdad Gallardo
What benefits would you have switching to bigger injectors? Would it just keep the engine from being choked up? Any power gains? I have an F11 in and was debating whether i need new ones or not? any help?
Launching!
Joined: Nov 2004
Posts: 246
Likes: 0
How can you say he doesnt need injectors? People were telling me the same thing, and that i would be good to 450rwhp, but they were wrong. Only way to find out is to get dyno tuned and find out what the duty cycle on yours are. Industry standard is to not run over 80%.
Originally Posted by Bluehawk27
How can you say he doesnt need injectors? People were telling me the same thing, and that i would be good to 450rwhp, but they were wrong. Only way to find out is to get dyno tuned and find out what the duty cycle on yours are. Industry standard is to not run over 80%.
Now you guys got me wondering if i need to upgrade my injectors when my h/c combo comes in? 346 w/afr205s& g5x3 and no2. By the way i know they upgraded the injectors in 01 but what size are factory for an 01 ss 28 or 26? Thanks
TECH Senior Member
Joined: Mar 2004
Posts: 14,620
Likes: 17
From: BFE
Originally Posted by NO5.0
Now you guys got me wondering if i need to upgrade my injectors when my h/c combo comes in? 346 w/afr205s& g5x3 and no2. By the way i know they upgraded the injectors in 01 but what size are factory for an 01 ss 28 or 26? Thanks
400 rwhp NA does not require injector swap, over that a dyno tune will determine that. 80 to 85% cycle is good after that you're overloading the injectors and run risk of failure.
As for N2O if you shoot wet, then you'll need a fuel pump, dry and you'll need both pump and injectors.
Originally Posted by Bluehawk27
If there is we havent found it. The PSI is fine, and it was tuned. I may have just gotten some shitty injectors from the factory, but if that iswhat happened to me it could happen to someone else also.
