351w swap need help will not idle

mustangpauly

New Member
Mar 1, 2020
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1
wisconsin
i need!!!!! Help my 302 tune is not work im just lost.
 

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mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
351w stock short block with gt40p heads and f303 cam, 70mm tb. speed master intake, 19 lb. injector and a 255 fuel pump.it will not idle on its own and when warm it hunts. im trying to get some run time on the new motor before i put the turbo kit on.
 

mustangpauly

New Member
Mar 1, 2020
10
0
1
wisconsin
i had it run with the stock computer but it was running lean. i know i need bigger injectors, i was hoping with megasquirt to make it work im not looking for WOT
 

a91what

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Apr 6, 2011
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The f cam is not very aggressive, I have not had time to look the tune over yet but it should idle relatively steady with the timing locked at 15* and the idle valve in a set position.