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Tractor Pulling Discussion Forum

IH 301 / truck head

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Mike S

07-13-2004 10:58:51




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Im building a IH 301ci 6 cylinder I have a head off a 240ci truck engine. Should I use the cam out of the truck engine also?




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ChadS

07-13-2004 22:09:36




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 Re: IH 301 / truck head in reply to Mike S, 07-13-2004 10:58:51  
And the rockers and the push rods from the truck engine. The truck head has a more vertical valve where the tractor valves in the head are angled. USE ONLY FLAT TOP PISTONS!! ChadS



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Mike S

07-14-2004 12:01:02




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 Re: Re: IH 301 / truck head in reply to ChadS, 07-13-2004 22:09:36  
My 301 has a small dome with a big dish in the pistons. I put the truck head on the engine (no head gasket) with the 301 cam , truck rockers and push rods, I got 400 lift on the intake and 415 exhaust. no problem with piston to valve clearance. Do you think this 301 cam will run good? or would I be better off with the truck cam? Thanks, Mike



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ChadS

07-14-2004 13:20:56




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 Re: Re: Re: IH 301 / truck head in reply to Mike S, 07-14-2004 12:01:02  
The pistons will hit the head if any dome is on it, the chamber is that shallow, but makes alot of compression. Look at what rpm you intend to run this engine, the tractor/combine cam will work fine for under 3000 rpm. the truck cam would be for more of over 3500 rpm if they rapped them that fast. More than likely, they are the same grind,, I think if there is a difference the 2, the tractor/combine cam would be better just due to a more "Working" engine than a truck. See somewhere, the tractor engines pick up the power they have through the carbs, cams, and intake and exhaust,, the trucks, they had higher compression to make the power they do. Now, combine the 2, and you would have a spicy combination! ChadS

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