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#146174 03/21/2006 4:39 PM
Joined: Feb 2006
Posts: 6
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Joined: Feb 2006
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Hey guys,
I was wondering if it was very difficult to swap the drive train of a 56 2-ton into a 42 2-ton. That is 270 straight 6, sm420 tranny and rear axle. I know there will need to be some modifcation to the driveshaft since the 56 is not a torque tube driveline, but will the engine, tranny and axle swap easily? What roadblocks might I face?
Thanks for any help you can give me.

#146175 03/21/2006 6:15 PM
Joined: Oct 2003
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42 2 ton is an open driveline

you will need to weld pedal mounts onto the bellhousing to use your 42 pedals

you will probably need to move the battery box because of the SM420 hump on the passenger side

get the hydrovac system off the 56 while you are at it

if its 270 gmc into a chevy, make sure you check the length and/or read Tony's 302 gmc into a chevy article

should be a simple swap


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