stanglx2002

For all those that have 331's does your car run rich since you put in the 331 over the 302? When I had my 302 in the car it didnt run rich and then put the 331 in it runs rich and then i put in another 302 it didnt run rich.

Do all 331's run rich or is it just a sensor problem?

FORD TOUGH

It should not run rich just because of the stroker. By the way nice website and car.

stanglx2002

thanks

would there be any reason why it is running rich then?

primetime5.0

my 347 doesnt run rich at all

irish1

Maybe stock motors fall within the parameters of the stock computer and your 331 does not. You did not mention if you were fuel injected or tuned so thats my best guess.

Matt

stanglx2002

It is EFI and it has a cobra computer in the car. Not sure why it runs rich i guess that it has to be a sensor problem since it cant be the wiring since the 302 engines ran fine in the car before.

primetime5.0

what makes you think its running rich?

stanglx2002

It has a gas smell that comes from the exhaust at idle and it is even worse from what i am told when driving

stanglx2002

Does anyone know what could cause this?

cccharleston

Crappy or untuned MAF would be the most likely cause.