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I think I'm done with modifications to my car(ya right). I have a 96 collectors addition LT4. Over time I have done the following, GM hot cam, heads were CNC ported by TPIS, Stainless works long tube headers, GM extreme duty timing set and Torquehead 24x conversion. The last mod necessitated a tune so off to the Dyno I went stock injectors running out of fuel around 6000 RPM.
Check out some of the dyno numbers on stock LT4's and modified cars on the Grand Sport registry website. You should be making more power with all that you have done. https://www.grandsportregistry.com/dyno.htm
Check out some of the dyno numbers on stock LT4's and modified cars on the Grand Sport registry website. You should be making more power with all that you have done. https://www.grandsportregistry.com/dyno.htm
His results are from a Mustang dyno, if it is set with stock calibration they read low compared to most dyno graphs from a dyno jet. What you really need to know is where did he start and where did he end up on the same dyno to look for the change.
Last edited by bjankuski; Mar 30, 2020 at 04:55 PM.
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Originally Posted by scottmxracer
not sure he said the injectors were running at 98%. Not really my area of expertise.
That's an interesting dyno pull. With the hot cam you should be somewhere around 425-435 at the motor, well at least that's what a friend of mine was at on an engine dyno with minimum mods. My 383 CFI motor puts out more than that at the rear wheels and I only have two injectors. If you are running 98% DC, that is way to much IMO and they will eventually burn up since you are running them almost at static. You may want to increase the size a bit and re-tune it. Love your engine/bay. Nice, VERY clean. Good luck with the HP quest.
Bigger injectors is deff. an option. If I do that I would prob. look at fuel pump and regulator upgrades. For now its running strong and I don't race or track it so Im just going to enjoy it!
From: Arizona - If you don’t know CFI, STOP proliferating the myths around it...
Originally Posted by scottmxracer
Bigger injectors is deff. an option. If I do that I would prob. look at fuel pump and regulator upgrades. For now its running strong and I don't race or track it so Im just going to enjoy it!
No problem, just thought it was odd for what it is. Enjoy it for sure.
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dyno results
Good luck with the HP quest.
