| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | Most modern 4wd vehicles get by just fine, no matter what body is on the running gear, with being geared for cruise speed at say 70 or so, and get adequate reduction with their main trans, be it auto or manual OD plus gear reduction in two speed transfer cases.
Ed
'37 GMC T-18 w/ DD 4-53T, RTO-610, 6231 aux., '95 GMC running gear, full disc brakes, power steering, 22.5 wheels and tires.
'47 GMC 1 ton w/ 302, NP-540, 4wd, full width Blazer front axle.
'54 GMC 630 w/ 503 gasser, 5 speed, ex fire truck, shortened WB 4', install 8' bed.
'55 GMC 370 w/270, 420 4 speed, grain, dump bed truck from ND. Works OK.
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