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Tractor Pulling Discussion Forum

super m horsepower question

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sup.mpullr

11-03-2005 16:58:09




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im rebuilding my super m this winter. im going to put in original style 4.125 high comp. domed firecraters, head ported,polished ,milled and bigger valves, farmall 450 cam and a hot coil,hot wires and hot plugs. anybody have a estimate of how much horsepower i could have out of it?




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chamspa

11-04-2005 14:05:53




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 Re: super m horsepower question in reply to sup.mpullr, 11-03-2005 16:58:09  
should be between 73and78 if you get that compression up to about 200



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super_m

11-04-2005 15:41:24




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 Re: super m horsepower question in reply to chamspa, 11-04-2005 14:05:53  
what do i need to do to get the compression to 200?



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champspa

11-04-2005 17:09:19




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 Re: super m horsepower question in reply to super_m, 11-04-2005 15:41:24  
find some pistons with real high steps about .8 in. tall like the 8000 ft. step pistons put a 450 head on grind it .100 ,450 cam and rocker arms, that will do it.



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super_m

11-04-2005 17:19:58




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 Re: super m horsepower question in reply to champspa, 11-04-2005 17:09:19  
how much would a 450 head cost? do you know where i can get one? how much could i sell the 8060 head on mine now for?



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B BARENIE

11-04-2005 06:04:53




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 Re: super m horsepower question in reply to sup.mpullr, 11-03-2005 16:58:09  
Forget the big valves, on a stock cubes that will only hurt low end torque, tractor with this sett up and low octane gas should be a good 63-65 hp !

when porting , do not open the runners up ,just clean-up, start from the valve bowl back !



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