they made 400's from 1970 till 1979. only year that was different was 1970, it had 4bolt main caps. the arguement still excists today whether they are better or worse then the 2 bolter's. I've heard enuff from multiple engine builders to use only 2 bolt blocks. we install 350 connecting rods when we rebuild them, you have to buy different pistons, to make them an even better motor.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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