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ChadS
09-13-2007 06:57:45
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Re: hey Chad in reply to T COTA, 09-12-2007 20:14:09
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What are you pulling on? a 400 ft track? That sounds like a ride that goes on and on. Over 300ft in an antique pull is worth every penny of entry fee. JMHO. Maybe two ways to get it to run second gear if your not powering out now with your 281 ci engine?? If your allowed, maybe widen out the 13.6s rims, make a shorter tire, but a wider tire, will slow down the ground speed by the shorter tire height, might act like it got a shot in the arm with a shorter tire. it would free up some power, enough to run second gear?? I dont know, but it might have a better shot with what engine you have with that setup. That also changes your hitch settings youd have to raise it up more to get it back in rule spec. So that could be something to consider,,, I cant see it hurting... Or, you can throw some money at it,,,, but if the squatted tire trick helps but not enough power,,, you now need some motor work. BUT! How much work do you need to get the power to do what your wanna do? Id say 100 hp would do anything you ask of it in second gear with 13.6's. Lots of ways to get 100hp out of a SM. Of course, your looking at a stroker kit. My recommondation would be a stroker that doesnt exeed the limits of the stock rod length, but large enough ci to have some power to spare. Id say any stroke from 6-3/4 and below (stock is 5.25) is the range to use a stock M-450 rod. and can be built reasonably. The bore size, keep in in the 4.375 bore range or less, to still run in the original block and still have meat in the block to be a strong engine but not leak water in the oil, and last for a while. Ive been thinking of a 4.25 bore X 6.75 stroke for myself to put in my 50 M, Ive done a little home work on it, my opinion is it would make 100 hp on any dyno all day long, and I belive it to make that with a 8060 head, ported, dont know if it would need big valves or not,,, it would be a high compression engine,, so a little work on a 450 head would be the ticket for it to get the most power out of it,,, they are a good flowing cyl head with some port work done. You could throw on a kerosine head, ported out and still do some chores with it, or go to plow days and have a good time and run it all day long. Cams,, well, I belive a 450 cam will run, but will be a low rpm motor, alot of low end power from 540 and below, or 1595 engine rpm and less. But some might disagree, but, what ever works that doesnt hurt power, is positive. It wouldnt be a slouch in second gear on a pulling track at 7500#. Thats my opinion, it does not go beyond the stock realms of the IH engine design and be resonable to build costwise, and have a long happy life work or play. 574-893-7437. Stock rod strokers is bout what we deal with. 100 hp, out of that described, walk in the park. Just depends on how much your looking to spend. ChadS
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