LQ9 fuel injector help
Thread Starter
Teching In
Joined: Sep 2017
Posts: 4
Likes: 0
From: Tulsa, Ok
LQ9 fuel injector help Can anyone recommend what fuel injector size for a 2005 Cadillac CTS-V with a LQ9 416 stroker, 228 cam, ls6 intake, headers. Currently running the stock 28 lbs.
Thanks!
Thanks!
TECH Senior Member
Joined: Jun 2016
Posts: 22,299
Likes: 3,619
From: Central Cal.
How much power are you now making (fuel limited) and how much do you plan on making?
Do some quick math and you will arrive at your fuel demand.
Get the next injector size over your new fuel usage number and you should have no trouble.
Do some quick math and you will arrive at your fuel demand.
Get the next injector size over your new fuel usage number and you should have no trouble.
TECH Enthusiast
Joined: Mar 2005
Posts: 663
Likes: 384
From: South Carolina
The guys over a ICT Billet have a nice factory LS injector chart with measurements. You can see the LS1 adapter cup above the L96 injector. It's either adapt or go aftermarket. There is good data on the Gen4 L96 injectors converted over to Gen3 format.
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Last edited by RedXray; Nov 9, 2021 at 11:30 PM.
Siemens Deka 60lb injectors used to be the go to injector for pretty much any ls1/6 length upgrade, because they were idle tunable and could flow a lot at higher pressures. Now that another 15 or 20 years have passed, I would think the price on them should be lower, but they are still capable.
