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Discussion Starter · #1 ·
I'm thinking about putting the 727 from my 84 into my 90. Reason? The 518 in the 90 is tired. It took a lot of abuse from the previous owner. The 727 is in great shape, only about 50k on a rebuild. And, the deciding factor is it is cheaper to put the 727 in rather than have the 518 rebuilt (or attempt it myself).

I have read here about how the cross members are different. Has anybody actually done this swap? Since I have the complete 84, can I use the cross member from it or will it be necessary to have some custom work done?

Thanks,
Ted
 

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I'd use the 84 crossmember, you might have to drill some holes or they could already be there, exhaust could need a little massaging also. Oh, you have to scrounge a drivshaft up too, or have a new tube cut for yours.
 

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Discussion Starter · #3 ·
Thanks for the quick reply.

I'm thinking the driveshaft from the 84 would be the correct length, right?

Oh, and btw, this is probably going behind a 440. Was a 318 originally.
 

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Yeah, the 84 shaft will work, didn't see that. You will need case or bb tranny for the 440.
 

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Discussion Starter · #5 ·
Unless something gets screwed up (which I doubt), I'll have the 440, the tranny, and the transfer case (all from the same truck) :)

Thanks for your help.

Ted
 
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