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*gmachinz* · 12-30-2015, 05:41 PM

Trans cross members are also different I believe. No reason to swap trans from a 350 to a 400. I had the TH350 in my k10 Shortbox rebuilt earlier this year. I went with a transgo shift improver kit stage 2, kevlar overhaul kit, extra 1-2 and 2-3 clutch packs, swapped out the stock overhaul misc. retaining snap rings for heat treated industrial versions, retained the stock converter and bought a 2-extra quart TCI aluminum pan. All of this set me back about $625 including synthetic ATF Mobil 1 fluid.

And it was WAY easier to lower the trans with t-case bolted to it. I used a transmission jack and secured both with chains. The t-case is heavier than that trans and it will try to roll sideways as you lower it down/out.

12-30-2015, 05:41 PM	#8
gmachinz Account Suspended Join Date: Jun 2011 Location: Des Moines, IA. Posts: 4,143	Re: Transmission questions Trans cross members are also different I believe. No reason to swap trans from a 350 to a 400. I had the TH350 in my k10 Shortbox rebuilt earlier this year. I went with a transgo shift improver kit stage 2, kevlar overhaul kit, extra 1-2 and 2-3 clutch packs, swapped out the stock overhaul misc. retaining snap rings for heat treated industrial versions, retained the stock converter and bought a 2-extra quart TCI aluminum pan. All of this set me back about $625 including synthetic ATF Mobil 1 fluid. And it was WAY easier to lower the trans with t-case bolted to it. I used a transmission jack and secured both with chains. The t-case is heavier than that trans and it will try to roll sideways as you lower it down/out.