unburnt fuel=black smoke=not full potential power

[CCSBD]

I read this everywhere but I was at truck pulls last weekend and something crossed my mind. Why do pulling trucks throw TONS of smoke all the way down the track? Are they not tuned properly or do they feed extra fuel because of the weight they have to pull? I have always wondered this and was just curious so thought I would ask

[03f250stroke]

i would assume big injectors and a pulling a big load

[Ryan Rønning]

They throw more fuel at the engine then the engine can use so that it never starves.

[CCSBD]

i see so better to over fuel ten to underfuel so there is no lack in power when pulling

[Marv]

Originally Posted by CCSBD

i see so better to over fuel ten to underfuel so there is no lack in power when pulling

I'm sure with consideration to the EGTs though...but, yeah I'd imagine they error on the "plus" side if you will.

[CCSBD]

yea I wouldnt imagine egt's get to hot cause they ave like 2' of exhaust to go through