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Gmpp ls3 480/495 timing using holley

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Old 02-27-2019, 05:13 PM
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Default Gmpp ls3 480/495 timing using holley

New to the LS world. Just swapped in a GMPP LS3/480 into my 67 Camaro along with a Holley Terminator system. I have not been able to come up with a good ignition timing table for this engine. The file from the Holley site is more for an LS1 and I have read that the LS3 likes significantly less timing. I had my Terminator on my old sbc so I am familiar with the program, but just cant find the timing info to plug in. Any help would be greatly appreciated!!
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Old 03-04-2019, 07:19 AM
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Here's a thread w/ the stock tune on a 525.
Maybe, d/l it, and take a look at the timing table?
https://forum.hptuners.com/showthrea...p-Crate-Engine




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