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Any problems with using 93 block/heads/camshaft with 94 P-pump?

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We lost the block and head out of a 94 about a year ago and found a 93 to replace it. Everything looked pretty good so we installed the P-pump plate etc.. and have been running since. The other day I lost my cam gear, pushrods and lifters. The only thing we come up with is the cast iron gear on 93 is not the steel gear on the 94. How does that sound?Everthing is in the machine shop now and we noticed the 93 camshaft is smaller than the 94. Is this upgrade necessary for the power of the p-pump? Is there anything else we need to know mixing these 2 slightly different engines?

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