LT1-LT4 Modifications 1993-97 Gen II Small Block V8

car falls on its face from a dead stop

Old 11-14-2007, 10:29 PM
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Default car falls on its face from a dead stop

i got my car running with my new cam 549/576 lift 230/244 duration still not tuned yet so it runs really rich... and i have an exhaust leak... havent had time to finish everything up getting into busy season at work... but on the way to work today my car would fall on its face from a dead stop and it would shift really hard like i was dumping the clutch but its a automatic... could it be fouled plugs or the converter or the tranny? or something else?
Old 11-14-2007, 10:34 PM
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tranny service and see if it changes
Old 11-14-2007, 10:35 PM
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It's probably the tune! You shouldnt be driving a car with that much cam untuned!
Old 11-14-2007, 10:35 PM
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like fluid flush and filter? i need to order my stall too a buddy of mine told me im gonna burn up that converter with that much cam
Old 11-14-2007, 10:37 PM
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but also it ran fine for the first few days and all of a sudden it starts doin that... idk the computer should be on its way pretty soon ordered it this afternoon
Old 11-15-2007, 07:17 PM
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MAF sensor? Also, if it ran fine for a day or two then started acting up, could very well be the computer. It will learn slowly, but can only compensate so much, by design.
Old 11-15-2007, 11:04 PM
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yeah its weird... it only does it around work though it doesnt seem to do it around my neighborhood though... ive heard that from a mechanic too... computer is on the way should be here the 21st
Old 11-16-2007, 08:04 PM
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lol, you admit that it is running very rich and has an exhaust leak and then still ask what the problem is?

Fix what you know is wrong first, then if you still have issues look elsewhere.
Old 11-16-2007, 08:10 PM
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Exactly. If you're runnin THAT rich, and your exhaust pipes are black, even on the outside, no way in hell it's going to run right. Fix the leak, fix the tune, then we can start diagnosing any other issues you may have.


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