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

96 Lt1 A/4

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Old Sep 26, 2007 | 07:13 PM
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From: south boston va
Default 96 Lt1 A/4
added a hotcam, LG Tube Headers, 2800 stall. My problem happens @ the 1/8 mile. car starts stumbling @ 1/8 mile. So we blocked my fuel line off for full pressure & gained 3 mph. any help from LT1 guys. 12.95 @ 103 mph after 12.90 @ 106 mph.

Stumble gone away ?
Last edited by 1320dance; Sep 26, 2007 at 07:34 PM.
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Old Sep 26, 2007 | 07:17 PM
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What do you mean by "blocked" the fuel pressure regulator? Did the stumble go away?

Jake
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Old Sep 26, 2007 | 10:00 PM
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Might be the fuel pump starting to go. Tape a gauge to the windshield and try a run to see if the pressure drops off.
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Old Sep 27, 2007 | 04:33 PM
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Sounds like your Optispark is going bad.
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