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

what's the best L98 timing setting?

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Old Nov 8, 2003 | 01:39 PM
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Default what's the best L98 timing setting?

I have an 86 L98. what should the timing be set at for best performance and drivability. some say 0-2 of inital timing is this a good setting?
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Old Nov 8, 2003 | 01:42 PM
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Default Re: what's the best L98 timing setting? (Jay 86)

I had mine at 10*,, pinged a little bit. So I dropped it down to 8*,,, Its perfect for my car. No pinging at all :cheers:
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Old Nov 8, 2003 | 01:42 PM
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Default Re: what's the best L98 timing setting? (Jay 86)

Every car is different. Start at 6* BTDC base timing and go up from there until you see knock retard occurring or no change in performance.
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Old Nov 8, 2003 | 01:47 PM
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Default Re: what's the best L98 timing setting? (scorp508)

On the dyno this year my car didn't care from 2-12. It really was a matter within 2hp, but every car is different.
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Old Nov 8, 2003 | 02:11 PM
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Default Re: what's the best L98 timing setting? (hippy)

HUGE difference between 4-10 degrees on my car when I put the stock chip in.

Now I just leave the timing at 4 degrees and program everything in the chip, and only 'fine-tune' with the initial timing setup.

In the cold weather in the NorthEast, I could go up to 8degrees and not worry about knock, and during the summer I had to drop to 6 and sometimes
4degrees due to humidity to not get detonation, and the car felt way slower/different.
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Old Nov 8, 2003 | 02:21 PM
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Default Re: what's the best L98 timing setting? (MrNuke)

Mine is set to 8 degs.

Vic

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