a forged master kit for an 86 and up costs a good hundred bucks more

 

after 86 the blocks have a one peace rear main seal wich you need a speical crank for.

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when the green flag drops the bull$hit stops

350,performer RPM intake ,650dp, 700r4, headers, 3inch exhast

 

does the alternator, ps, ac, and all that stuff bolt on the same?

 

should

 

I'm assuming you have an '89 from your "handle".

You can not use a two piece seal crank with the post '86 one piece seal blocks without an adapter. The machine costs involved to make this conversion are spendy. The adapter is spendy too.

The post '86 engines are also an externally balanced engine requiring a matched flywheel/flexplate to the rotating assembly. Before everyone jumps in with disagreement of this statement, you need to know a few things first.

The post '86 engines with one piece seal use an entirely different crank. The work end of the crank has been machined to accept the one piece seal. This change eliminated the "flyweights" on the crank flange that the earlier cranks used to get the crank to “neutral” balance. GM fixed this by adding weight to the flywheel/flexplate to get the crank back to neutral balance. Therefor, the rotating assembly is no longer classified as “internally balanced” because weight had to be added to an attachment to the rotating assembly outside of the block. GM did this for monetary reasons because of the expense involved with using Mallory/heavy metal that would be needed to achieve a “neutral” balance of the crank.