LT1 performance

Ed Wright · 07-29-2015, 10:16 PM

Your timing and air/fuel sound close enough, I'm with Cooter. Doesn't sound like there is much left there. I did tune one good running LT1 Stocker that liked 12.5-1 air/fuel, but only one. My car likes 12.8-1 to 13.0-1, depending on RPM. Sometimes you get a wide band that's calibration is shifted a little, so the numbers you see at peak torque may look a little different than somebody else's. Most LT1s I have worked with like 35 to 37 degrees, so 36 should be very close. Not likely much ET there, if you are at 36 now.
Sounds like your just down on power.
You have verified your timing with a light, right?

07-29-2015, 10:16 PM	#4
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: LT1 performance Your timing and air/fuel sound close enough, I'm with Cooter. Doesn't sound like there is much left there. I did tune one good running LT1 Stocker that liked 12.5-1 air/fuel, but only one. My car likes 12.8-1 to 13.0-1, depending on RPM. Sometimes you get a wide band that's calibration is shifted a little, so the numbers you see at peak torque may look a little different than somebody else's. Most LT1s I have worked with like 35 to 37 degrees, so 36 should be very close. Not likely much ET there, if you are at 36 now. Sounds like your just down on power. You have verified your timing with a light, right? __________________ Ed Wright 4156 SS/JA