| Crusing in the Passing Lane Joined: Jun 2011 Posts: 5,096 | The engine bay is designed for many engines, Caddy would fit fine. If that is such a nice vehicle, except for the engine, a Cummins 6bt would fit in there OK, and save on fuel in the long run. Might need to get a higher axle ratio, Cummins school buses and many other applications come with air brakes and other accessories, so finding an engine should not be hard to do.
School buses are sold after time in many place for cheap, so that would be a good source. They also have hot water heater circulator pumps which are handy in winter.
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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