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i am pulling a 366 w/ alison out uf a gmc because it gets 4 mph on a good day. th400 is an excelent tranz, but top gear is 1:1. 700r4 tranys have issues, especally the early ones. i like them because the parts and knowhow to bulletproof them is out there. i have a built 700 behind a 450hp...

Several people have asked if there are any specific problems with slamming a 6.2 diesel engine & trans in a GMC M series 6x6. The original 302 engine was governed at 3600 rpms giving the truck a top speed of 61 mph on 1100x20s. A 6.2 engine with the 400 turbo trans as fitted to a CUCV would be...