C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Total Timing?

Old Mar 31, 2005 | 06:39 PM
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91superram
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Default Total Timing?

What should the total timing be on a l98 small block for peek performance.I'm reading 36 @ 3000 RPM is this about right
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Old Mar 31, 2005 | 07:04 PM
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Comes on what year engine / condition.
My stock '85 with stock 9:1-9.5:1 compression heads flew at 48degrees total, now I can only get away with about 41-42. (New heads)
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Old Mar 31, 2005 | 08:01 PM
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How are you checking this? With the ECM controlling the centrifugal and vacuum advance curves, there is virtually no way to check this with a timing light, as you cannot duplicate WOT conditions in the driveway. If you are using a scanner, 36*, all in by 3000 rpms, at WOT, is right about where you want to be.

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