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Tribal Scout

10 Posts

Posted - 28 Dec 2014 :  01:56:16 AM  Show Profile  Reply with Quote
400 motor TH400 w 2000 stall 3:42 gears headers Holley 750dp Summit 2802 cam. Starts on first crank revs great on park but will not do burn out n falls on its face on take off. I dont want to race but do expect a burn out. What can I do?

Blued and Painted

3505 Posts

Posted - 28 Dec 2014 :  10:36:12 AM  Show Profile  Reply with Quote
Sounds like not enough accelerator pump shot from the holley and/or low ignition timing.

Stall speed could be higher. 23 or 2500. Check with cliff and see if the Continental jim hand special is right for you.

Bull Nose Formula/ 461/ Q-Jet/
TH400/ 3.08 8.5 / R44TS.

Edited by - Blued and Painted on 28 Dec 2014 10:38:20 AM
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Crazy Horse

1442 Posts

Posted - 28 Dec 2014 :  10:56:02 AM  Show Profile  Reply with Quote
I agree on the stall speed being too low.

I have the 2801 Summit in my 400 and it wants more stall than what the current 2000 RPM unit I have in it now. It doesn't fall on its nose on take off though.
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5448 Posts

Posted - 28 Dec 2014 :  11:27:06 AM  Show Profile  Visit cortcomp's Homepage  Reply with Quote
Double check the timing as Blue mentioned, and look down the carb to see if the accel shot is clear and firm, not leaky or sputtery or non-existent. Both free 5 min tests.
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Sitting Bull

80 Posts

Posted - 03 Jan 2015 :  3:20:34 PM  Show Profile  Reply with Quote
What tires do you have? Aggressive tires like street slicks you will need more stall if you haves street tires it should burn all through first gear. Try bigger pump nozzle.
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