Crank pulley holes NOT lining up?

[6t5mopar]

I'm trying to put my lower pulley on and the holes to the balancer are not lining up. This is a 440 cast crank motor. Can I oval the 1 hole out a bit?

[gthomas]

Please don't take this as an insult, but, did you try rotating one hole at a time, sometimes this works.

[Glen440]

I have usually just used 5 of the 6 bolts. The cast and forged pullies are a little diff for the bolt pattern. You can oval the one hole.

[6t5mopar]

No insult taking, I tried rotating the pulley for 1/2 an hour.
I'll hog 1 of the holes a bit.....Thanks Guys.....

[6pakman]

look at one of the holes. it should be a little larger than the rest. that pulley should only go on one way.that hole is suppose to help you alighen the pulley.

[gthomas]

I just went through the same problem with my new torque converter. I played with it for an hour, I finally took it back to the shop, and damn, they got the bolts in, but you have to put a certain one in first. I ended up putting the engine in without the trans because I had to get the hoist back. I think aligning the bolts with the engine in, is going to be a real headache.

[fastback340]

cast and forged cranks use differant pulleys. you can oval one hole to make it fit.

[6t5mopar]

Thanks everyone! I ovaled the hole a tiny bit, and got it right in.

[jelsr]

I think you will find that is is a year difference in the pulleys. They changed from a symetrical pattern to a non symetrical (2 holes wider apart than the rest). The flex plate problem is actually simple if the converter has a drain plug. There is a small hole in the plate toward the center. It is placed opposite (180deg.) of the drain plug.

[John Kunkel]

Prior to '72 the pulley bolt pattern was asymmetric, starting in '72 they went to a symmetrical pattern. Big block, small block, forged, cast, all were symmetric in '72 and later.