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Tractor Pulling Discussion Forum

Super M compression

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oliver77

05-16-2008 03:39:28




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I"m building a super m with denny"s pistons (4.310) and a half inch of stroke. I"m also running a 450lp head that has bigger valves and a lot of port work. It has a cam from bullet cams in it too. What kind of compression should I be looking for on each cylinder? I"m not having the block decked or the head shaved. Thanks for the input.




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Dblair

05-16-2008 13:15:48




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 Re: Super M compression in reply to oliver77, 05-16-2008 03:39:28  
9.7 with a international head gasket.



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rcw

05-16-2008 12:12:33




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 Re: Super M compression in reply to oliver77, 05-16-2008 03:39:28  
190# cranking pounds. I just run high test gas.



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Hoss in Me

05-16-2008 06:52:01




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 Re: Super M compression in reply to oliver77, 05-16-2008 03:39:28  
I built same thing.Didnt care what compression was,put high test in it and run her! Have fun,Hoss



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superih

05-16-2008 06:49:55




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 Re: Super M compression in reply to oliver77, 05-16-2008 03:39:28  
335 cid. With flat top pistons coming flush to engine deck, 140cc head, compression should be 10.8/1



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