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Misfiring without Nitrous

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Old May 24, 2007 | 12:46 PM
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myfast3rdgen's Avatar
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Joined: May 2004
Posts: 278
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From: USA
Car: Trans Am
Engine: 305 to 350 to 383 to BOOM!!!
Transmission: 5-speed
Axle/Gears: 3.73 10-bolt
Misfiring without Nitrous

When ever I get on it, WOT, 1st gear is fine, however when I shift into 2nd gear, after 3,000 RPMs i start to misfire.

When I am spraying nitrous, I do not have a problem with misfiring, it runs stong.

I have a 350 with 305 heads. A Demon Carb (650 CFM w/stock jets) Replaced the Coil, Spark Plugs, Spark Plug Wires, Cap, & Rotor.

The plugs are gaped right and i'm running at about 12* before TDC for my timing.

Can anyone please tell me why my car is misfiring.

Only after 3,000 RPMs in 2nd gear?
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