I have a LS3 in the car listed above with the factory side exhaust. on deceleration the exhaust gases are igniting would a baffle insert stop this?
Jul 7, 2020 at 9:55 AM
Deceleration backfire
1965 CHEVROLET CORVETTE
DOC M
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ASEMASTER6371
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Good afternoon.
I would start by checking the timing. Timing that is retarded will backfire when slowing down.
https://www.2carpros.com/articles/engine-backfires-while-running
Make sure the point dwell is set to 30 degrees. Then remove the hose from the vacuum advance on the distributor and set to timing to 12 before top dead center. Then attach the vacuum line and the timing should go up even more.
A baffle will not stop the backfire. It will suppress it.
Roy
I would start by checking the timing. Timing that is retarded will backfire when slowing down.
https://www.2carpros.com/articles/engine-backfires-while-running
Make sure the point dwell is set to 30 degrees. Then remove the hose from the vacuum advance on the distributor and set to timing to 12 before top dead center. Then attach the vacuum line and the timing should go up even more.
A baffle will not stop the backfire. It will suppress it.
Roy
Jul 7, 2020 at 10:37 AM
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