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Old 05-04-2011, 03:52 AM
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Swapping out the SM465 for an auto?

I've got a 2 wd 1987 1/2 ton long bed chevy pick up that has this four speed, and since it's really just a three speed with a granny gear I might just swap it out for a nice auto when I put my 454 into it. Would the stock crossmember work? What about the drive shaft? I know it's got a diferent yoke (10 spline?), but the whole carrier bearing thing.
Thanks, mike

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Old 05-05-2011, 01:59 AM
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I had an '88 1 ton xtra cab 4X4 with a pathetic 454 and the granny 4 spd. I had the "Toy Shop" in Pomona, Ca. do the conversion. Best thing I ever did and well worth the $1600 it cost then. Made driving the truck around town so much nicer and gave me a couple more mpg on the road. You may have to move the crossmember, don't remember if we had to have the driveshaft modified or not.....youll find out.
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