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1963 GMC pickup at transfer station
1963 GMC pickup at transfer station
V6!
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Re: 1963 GMC pickup at transfer station
I said "302 V6?"
He says "yeah, I think so."
I was close. The 302 was a GMC inline 6. This V6 would have been a 305.
https://en.wikipedia.org/wiki/GMC_V6_engine
Even more amusingly, they also had a 351 V6 and some much larger ones. This was a 60° V6 and they made 60° V8s and V12s off this architecture. I would bet the gas V12 was an over the road truck engine before diesels were as common as they are now.
Also interestingly, these V6s are over-square. The 305 had a 4.25" bore and 3.58" stroke. The 351 V6 had a crazy 4.56" bore and 3.58" stroke. Just to top it off, there was a 401 V6 with a 4.87" bore and 3.58" stroke.
The largest bore was the 478 V6 with a 5.125" bore and 3.86" stroke. What's funny is these were all tuned for torque, despite the seemingly rev-happy bore/stroke ratio.
He says "yeah, I think so."
I was close. The 302 was a GMC inline 6. This V6 would have been a 305.
https://en.wikipedia.org/wiki/GMC_V6_engine
Even more amusingly, they also had a 351 V6 and some much larger ones. This was a 60° V6 and they made 60° V8s and V12s off this architecture. I would bet the gas V12 was an over the road truck engine before diesels were as common as they are now.
Also interestingly, these V6s are over-square. The 305 had a 4.25" bore and 3.58" stroke. The 351 V6 had a crazy 4.56" bore and 3.58" stroke. Just to top it off, there was a 401 V6 with a 4.87" bore and 3.58" stroke.
The largest bore was the 478 V6 with a 5.125" bore and 3.86" stroke. What's funny is these were all tuned for torque, despite the seemingly rev-happy bore/stroke ratio.
Re: 1963 GMC pickup at transfer station
These sound more or less like a V6 version of the Chevy inline 6s. Except these should be able to withstand some real RPMs. I will have to look up the hotrod history of these. I dunno, maybe they sucked.he 305A was equipped with a single barrel carburetor and produced 150 gross horse power at 3600 rpm and 260 gross torque at 1600 rpm. GMC also made a B,C,D and E version of the 305 v6. The E version producing 165 gross HP at 3600 rpm and 280 gross torque at 1600 rpm.
Oh yeah that 702 "twin six" (based on two 351 V6s) put out this for power:
http://www.enginelabs.com/news/a-look-b ... 12-engine/It produced 250 net SAE horsepower (190 kW). Torque was 585 lb·ft (793 N·m).
This would have actually been a stronger choice than a diesel in the early 60s for sure. It is a serious engine at 1500 lbs, 56 head bolts, a 180lb crankshaft and so on.