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Tractor Pulling Discussion Forum

IH pickup engine in M thru 450 frame?

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WR

04-12-2004 15:25:14




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Has anyone ever put a straight 6 IH pickup engine (maybe 260-some C.I.)in a M tractor? We have a sweet running engine from a 1967 TravelAll. It developes its peak torque at about 1500 rpm's. Plans are to use it perhaps in a M to run off the pulley to run a big four sided planer, but might use to pull a bush hog and a few things. Any ideas anyone?

People are also talking about using the IH truck heads on the IH tractors? What heads can be used on the 460-686 IH 6 cylinders?

Thanks in advance

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ChadS

04-13-2004 07:46:24




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 Re: IH pickup engine in M thru 450 frame? in reply to WR, 04-12-2004 15:25:14  
You would need to use a rear engine plate from either the M, or a 560. you can drill the mounting holes into the M plate to adapt the 6 cyl, or just use one from a 560. the easiest way to adapt the front engine mounts would be to use 560 frame rails, then the stock engine mounts for the 6 cyl, and they will bolt right on the M bell housing. Basicly,, the 460, is nothing more than a 300 rear end, (early) with a 6 cyl, and you can bolt the 6 cyl right into the H too, only machine work, is to turn the flywheel down, to fit the H starter ring to the 460 flywheel. On the M, you will need the 560 flywheel, but you would have to compare the distance from the engine plate, to the back edge of the starter ring. it must match the 4 cyl specs on this measurement, in order to use the stock M starter. My opinion is, that it would be easier to use a 450 tractor, since it had a 3 bolt starter, and is basicly the same as the 560. Other than making the flywheel and starter ring match the M-450 specs, it is cake work. ChadS

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WR

04-13-2004 15:40:35




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 Re: Re: IH pickup engine in M thru 450 frame? in reply to ChadS, 04-13-2004 07:46:24  
I have identified the IH TRUCK engine as follows: 1967 BG 241- (240 C.I.) at a little over a 100 hp.



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ChadS

04-14-2004 06:39:00




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 Re: Re: Re: IH pickup engine in M thru 450 frame? in reply to WR, 04-13-2004 15:40:35  
I could not tell you how much HP they are, The truck motors were basicly the same block configuration as the tractors, the head, pistons, cam, intake, and valve train were different. but either one will interchange. If it is me, I wish I would have a down draft carb, and intake on my 460h, but, the updraft works just fine. The truck engines turned a bit more rpm than the tractor engines, so, the cam, is more for a high rpm rating. I think it was rated for 3600 rpm, in the books. HMM, Ih had factory hop up parts in those engines, those who have messed with them in the past know all about what can be done to these engines. Chad

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Buzzman72

04-13-2004 05:39:19




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 Re: IH pickup engine in M thru 450 frame? in reply to WR, 04-12-2004 15:25:14  
You might tap ChadS on the shoulder about this one. IH's truck sixes--or most of 'em from the mid-'50's on--had a tractor equivalent (such as, BD264/C263, etc.). While in general the truck heads had a smaller combustion chamber, you might "truck" on over to oldihc.org and read some of the posts in the "shop talk" columns...as there are differences in "tilt-valve" and "straight-valve" heads, and which will work with domed pistons and which HAVE to be used with flat-tops.

Hope this helps some...and good luck with the M!

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