73-87chevytrucks.com
73-87 Chevy _ GMC Trucks => 4 Wheel Drives => Topic started by: 74k20 on June 24, 2011, 02:14:53 pm
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Quick simple question.
'74 k20, original untouched 350, th350, NP203, small 2 1/2" lift with 255x85x16 tires. So it's off the ground above stock height. SB400 in shop being machined up for probably winter install, so I would prefer a th400 at some point.
My th350 started rattling, making noise, acting funny, getting hot, ect. I've got a spare used untouched th350 4x4 trans to swap in for now. I'll most likely use another trans during the motor swap behind a torque sb400 and install as a unit (minus the TC).
Do I remove trans with t-case attached as a unit, or separate? Same question during install, as a unit or separately? Is it hard to line up trans to motor with the off center heavy t-case hanging off it.
Standard garage floor install using floor jack (no hoist), yet borrowing a trans/jack adaptor. Not sure how the trans/jack adapter will work with the t-case. I do have a welder and misc steel to fab up some sort of cradle if needed. Oh and I'm a small guy, so that np203 is a chest killer for me.
Thanks
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Personally, I would take them seperately so you have more contol over them. You will have to split them up anyway.
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I agree, especially with the transmission on the jack, the tail end will be VERY heavy.
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So far the advice you got sounds good.
The only thing I would add is that you can use some threaded rod screwed into the back of the block to use as a guide to line up the trans.
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Good idea on the rod, never tried that trick before. Thanks for the answers and direction to head. I know it can be done both ways, so nice to get a common answer on best prefered method.