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Re: GM Semis
Quote:
Originally Posted by C10 - C90 Bill
Bob,
The '71 9500 I used to drive had a 637 in it. It also had a 10-Speed Road Ranger in it. To this day, since we got the truck in the spring of '72, I have never seen, or even heard of another, with a Road Ranger trans. Just about all the 637's in J or H 9500's I have seen (online only) through the recent years were in Fire Trucks, but every one was a 5-Speed, 2-Speed Rear.
Glad to learn something new. I never knew my old truck was a "JE". Also never knew they made an "ME".
My "JE" had 12 Fronts and 34 Rears (20 Ft Flatbed Dump). I'm going to say that the RR was a 610.
The 637 didn't have much Torque and you had to do a lot of Shifting, which I didn't mind, lol, but was a real good all around truck that hauled some interesting loads.
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Most all of the 637's I have ever seen were in fire apparatus as well! Many were in steel tilts, the rest in H/J's. I have never driven a 637, but those I know that have all said the same thing- not a lot of torque at low r.p.m.'s, had to gun them to get any power out of them. Not like the V-6's, isn't that strange?
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1967 GMC CM-2500 Camper Cruiser, 351E V-6, NP 435 4 speed, Dana 60, and factory A/C. 2012 GMC K-3500 WT regular cab, 6.0L Vortec, 6L90.
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