Need Lots More Power WD-45

I have a WD-45 stock tractor that I want to use to compete in local tractor pulls. I need lots more power. What can I do? Where can I get high performance pulling engine pull parts for an Allis?
 
get yourself a wd rebuild kit.the 4 1/8 pistons are taller than your 45 pistons.re-grind the cam to 175 specs,install a 175 gov.spring,have the carb rebuilt by motec,the head just needs a good rebuild.this combo gave me a little over 60 horses-and gobs more torque.good luck!
 
A lot has been discussed here about how to do this. Stroke is your friend. It takes a total package. Crank 6" pistons and sleeves 4 5/8" at least 4 1/2. You don't need any water in the block concrete it. Put the water in the back of the head and take it out the front. Head ported on a flow-bench. BB. Chevy ex valves work for intakes. dowel pin the intake manifold. Electronic ign, and hot coil. D17 ring and pinion, or from a diesel WD45. You can also put a WC trans in front of the WD one. I haven't done this but looks easy. 4th on the WC is straight through. 1 to 1. Get aholt of a Hook or Antique Puller magazine. Try to find a builder that you can drive to and look in the eye. Vic
 
I forgot the cam. and rocker arms. Competition Cams in Memphis Tn. You can call them with your bore and stroke and expected RPM. They can match a cam to your engine, and tell you what hp to expect. Last one we got was a trailer towing spec for a 350 Chevy, I think. Vic
 

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