GM Semis

[C10 - C90 Bill]

Bob,

I don't believe they put any 12V-92's in the General or Bison. If I'm correct, was that because of fuel mileage back in the mid '70's?

[Bob B.]

Originally Posted by C10 - C90 Bill

Bob,

I don't believe they put any 12V-92's in the General or Bison. If I'm correct, was that because of fuel mileage back in the mid '70's?

The 12V-92 was not offered in the General or Bison. Fuel economy, or lack thereof, would certainly have been a factor. But, I think the main reason was no regular highway transmissions at the time would have stood up to a 12V-92. Size and weight were probably a factor as well. Unlike a 12V-71, a 12V-92 has 4 cylinder heads and a longer heavier block. It just wasn't a highway engine.

[KQQL IT]

Originally Posted by Bob B.

The 12V-92 was not offered in the General or Bison. Fuel economy, or lack thereof, would certainly have been a factor. But, I think the main reason was no regular highway transmissions at the time would have stood up to a 12V-92. Size and weight were probably a factor as well. Unlike a 12V-71, a 12V-92 has 4 cylinder heads and a longer heavier block. It just wasn't a highway engine.

I dont believe I've seen a 12v92 in any highway truck.
These fellers did 16v71 in a cab over.

https://youtu.be/bCUpjlYm1NA