I'm looking at swapping a '86 turbo transmission/transfer case (r151) into my '85 22r (carb) 4x4 which has the G52 transmission... I'm pretty sure I have the answers to my questions, but want to double-check... will I have to modify the floor boards at all to fit the R151? The bell housing should match up? What about a clutch/flywheel combination? Do I need a bigger clutch/flywheel for the turbo transmission, or will the original ones work? Are there any other secrets to the G52 - R151 swap? Will the drive-shafts need modification? What about the mounting locations on the crossmember?

Sorry for all of the questions...

Thanks,
Ken

I don't know about the G52 specifically, but I would go in assuming you will have to modify the floorboard. Not hard to do. The bellhousing fits a 22R block, and normal 22R clutch, so no worries there. You may need to modify driveshafts but I tend to think not. I would be very uncertain about the crossmember; you should be able to modify the stocker though if you need to.
HTH!

I did this very swap into a my '84 xtra cab. It was pretty much a straight across swap. <IIRC>The G52 tranny that came with carbed trucks had the same shifter location as the R151F. If the truck had been equiped with a 22RE it would have a W56 tranny which, so I've been told, has the shifter farther back. The clutch from your 22R will work, but you could get a flywheel and clutch from a '93 - '95 22RE, which is the same as the slightly larger ones that came with the turbo 22RTE in '86 - '87. I paid $35 for a flywheel at the boneyard and about $50 to get it resurfaced. JT Outfitters sells a good stock type clutch. JT also has this clutch up as an eBay auction here. For a high performance clutch it looks like Marlin Crawler might be the best bet.

Oh yeah, the output flanges on the turbo setup have a larger bolt pattern than the ones that came with your truck. No problem though, your flanges will swap right over. Just remember to clean the splines on the T/C and the flanges with a solvent like brakeclean and seal them up with grey RTV, otherwise you'll have oil leaks at the flanges.-- Matt