When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
So im wondering which injector should I use.
currently I've been sitting on 60lbs injectors that have been working with my gt45 turbo crabking 14psi on the stock ls1 for now. not sure what the power is but its been driving reliable for years on stock internals, with a healthy fuel system to support it.. dual racetronix 340 pumps amd harnesses, deka 60lbs injectors, 50psi on a BRFPR with a full return system.
Now I'm putting a summit stage 2 turbo cam in it, and thinking of throwing on the 7875 billet gen 2.5 turbo that's capable of quite a bit from what we have seen from sloppy mechics. gonna keep the power under 800 since the stock ls1 internals are now gonna be the Achilles heal.
that said, I have 80lbs injectors from our friends at rhe ws6store and I also bought SEP 120lbs injectors, but im a bit hesitant on running those as I've heard some difficulty tuning those?
anyone run both and know better than me, please chime in! just a cam hanging out waiting to find the right block lol
Last edited by JoshuaGrooms83; Jun 2, 2022 at 02:36 PM.
Reason: cleared up which summit cam
pull these calculations off Fic just for some simple math. either one of these will work for my current setup.
I could use the 80lbs on pump to hit 800hp or the 120lbs with e85 to hit 800ish with both under 80% duty cycle in theory, even with moderate fuel pressure.
well for now, 80lbs injectors it is. if I swap to e85, I'll give the 120lbs a shot. I've already got preliminary tune loaded on my tablet, now just gotta finish installing the turbo so I can get the idle hashed out
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Slideshow: The controversial Ferrari F6 swaps its original flat-12 for a Corvette Z06-derived LT4 V8 and sends power to four rear wheels through a custom-built drivetrain.
7 Most Reliable High-Performance Engines GM Has Ever Built
Slideshow:These GM engines didn't just make huge power, they survived abuse, boost, track days, and six-digit mileage with a reputation for refusing to quit.
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Slideshow: From wobbling harmonic balancers to failed EBCMs, these are the issues that define long-term C5 ownership and what repairs typically involve.
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Slideshow: A modern Camaro transformed into a retro icon, this limited-run "Bandit" build blends nostalgia with brute force in a way few revivals manage.
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Slideshow: Cadillac didn't just crash the high-performance luxury vehicle party, it showed up loud, supercharged, and occasionally a little unhinged...
Coachbuilt N2A Anteros Is an LS2-Powered C6 Corvette In Italian Clothes
Slideshow: A one-off sports car that looks like a vintage Italian exotic-but hides a C6 Corvette underneath-just sold for the price of a new mid-engine Corvette.
120lbs SEP or 80lbs DEKA 
