Nova & Chevy II The Chevy II was introduced in the 1962 model year and quickly became one of the most popular models, with many trim levels and engines available. The RWD Chevy II/ Nova ended in 1979

Open Headers and Misfiring

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Old Aug 10, 2017 | 8:31 PM
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mletson's Avatar
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Default Open Headers and Misfiring

Hello,

I have a 383 Stroker in a 1974 Nova. Runs great except .... When I open up the exhaust using my electric cutouts, the motor misfires like crazy. It misfires a little when they are closed but when open, it's horrible.

Any thoughts?
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Old Sep 28, 2017 | 4:23 PM
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From: fort worth tx
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Originally Posted by mletson
Hello,

I have a 383 Stroker in a 1974 Nova. Runs great except .... When I open up the exhaust using my electric cutouts, the motor misfires like crazy. It misfires a little when they are closed but when open, it's horrible.

Any thoughts?
Would start with dist. cap and rotor, check spark plug wires next
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Old Sep 28, 2017 | 5:24 PM
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From: kevinkpk
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Might be sucking air through the exhaust
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