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ChadS
04-12-2004 08:15:01
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Re: 560 horsepower guestimate in reply to Ryan J, 04-11-2004 12:45:54
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After working on this 263 I have in my 460, I would say that it would be 100hp, the truck head will give you quite a bit of compression, just watch the piston/valve clearence. it will be tight. also, you may need the truck valve train, rocker assembly, the truck head is a straight up and down valve, and the tractor cyl head, the valves are angled, so there is a difference in the ratio of the rockers, just due to the different angle of the valves in the head. Pay attention to the distributor, change the mechanical advance springs, under the points plate, to help with timing advance speed. it will not affect the amount of timing, just how fast it will react. My 263 in my 460, after I did all the home work, is 80HP at 540. nothing done internally, all carb, ignition, valve adjustment, and fuel. Just one sweet running engine. Good luck, and have fun! Chad
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