68 Mustang Engine Swap pulley problems

[kirkdickinson]

I just put a 302 into a 68 Mustang that used to have a 289 in it.

I know that the 289 isn't original and the guy at the machine shop told me it was out of a 67 Mustang.

The 289 was totally ruined with two broken pistons and bad scars inside the cylinder, broken valves, broken valve springs, etc... (already bored .60 over)

I purchased a 302 from a junkyard that was sold to me as a 351 Winsor from a truck, but after spending two days to get it ready to drop in, we discovered that it is actually a 302. And the numbers on the intake manifold say it came from a 68 Mustang. Decided to go ahead and put it in.

Well, the Mustang has a crossflow radiator and the 302 had a water pump that didn't have the outlet on the correct side, so we put the water pump from the 289 so that the radiator would work. Now the problem starts. The 289 had lower pulleys and waterpump pulley that were nearly the same size. The 302 had a bigger lower pulley, and a smaller waterpump pulley.

No problem, use the 302 pulley on the 289 waterpump. No go. The 289 waterpump is not as deep and the pulley doesn't line up. The pulley needs to be about 3/8" farther out.

Ok, No problem, I think, take the lower pulleys off of the 289 and then all the front pulleys will match, and the waterpump. Look at the pulleys and the 289 is a three bolt pulley and the 302 is a four bolt pulley. Besides the front of the 302 crank looks bigger.

I thought about using a stack of washers, but fear that there will be balancing problems with the water pump pulley since the pulley will be out past the center shaft.

I can't be the first one with this problem. Any solutions?

Thanks,

Kirk