6066 (1960-1966) GMC Truck Club
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6066 (1960-1966) GMC Truck Club (https://6066gmcclub.com/index.php)
-   GMC V6 and V12 Engines (https://6066gmcclub.com/forumdisplay.php?f=9)
-   -   SO who came up with the GMC V6's??? (https://6066gmcclub.com/showthread.php?t=49171)

Ed Snyder December 31st, 2015 05:49 AM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by Dave Boboltz (Post 60334)
Or there is another guy who lives nearby who has some amount of historical information (Don Meyer).

Dave Boboltz, Waterford, MI
I'm glad to hear that Don Meyer is still alive, Dave. I corresponded with him a few times several years ago. I sent him color copies of all my 60-66 GMC sales brochures that he didn't have. He seemed really appreciative. I don't remember exactly where I first got his contact info, but do remember him being identified as the official GMC historian. I'm guessing he might be in his 80s by now.

BobBray December 31st, 2015 08:50 AM
Re: SO who came up with the GMC V6's???
 
I talked with Don Meyer a few times over the years, he is is very knowledgeable about GMC in the old days.

As for the low compression, there are a couple of factors. First, large bore engines can be more prone to knocking, all other things being equal. Also, gasoline truck engines of the era were designed to use low octane (cheap!) fuel. None of the GMC V-6's contemporaries had very high compression, most were in the 7:1 to 8:1 range. These engines were designed to be abused!

TJ's GMC December 31st, 2015 03:25 PM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by BobBray (Post 60355)
I talked with Don Meyer a few times over the years, he is is very knowledgeable about GMC in the old days.

As for the low compression, there are a couple of factors. First, large bore engines can be more prone to knocking, all other things being equal. Also, gasoline truck engines of the era were designed to use low octane (cheap!) fuel. None of the GMC V-6's contemporaries had very high compression, most were in the 7:1 to 8:1 range. These engines were designed to be abused!
You got that right. lol I've ran 87 in this thing no problem at all. Though I prefer 91, it's nice to know the engine will run happily on low octane. :thumbsup:

TJ's GMC December 31st, 2015 03:25 PM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by Ed Snyder (Post 60354)
I'm glad to hear that Don Meyer is still alive, Dave. I corresponded with him a few times several years ago. I sent him color copies of all my 60-66 GMC sales brochures that he didn't have. He seemed really appreciative. I don't remember exactly where I first got his contact info, but do remember him being identified as the official GMC historian. I'm guessing he might be in his 80s by now.
Wish I could meet this guy!

TJ's GMC December 31st, 2015 03:26 PM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by bigblockv6 (Post 60349)
I'm not absolutely sure but from what I recall The idea of having low compression was for achieving low end torque.
That makes sense, but man....imagine what a compression boost would do. lol

bigblockv6 December 31st, 2015 04:10 PM
Re: SO who came up with the GMC V6's???
 
GMC did have what the called the HC(High Compression) series of V6 engines, never installed in trucks. They were sold for industrial purposes, though they called them high compression the ratio did not exceed 9 to 1.

BobBray December 31st, 2015 07:22 PM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by bigblockv6 (Post 60360)
GMC did have what the called the HC(High Compression) series of V6 engines, never installed in trucks. They were sold for industrial purposes, though they called them high compression the ratio did not exceed 9 to 1.
Yes they did. I think the idea was that those engines were primarily for use with propane/LNG/CNG fuels.

I wonder if any of the high compression engines ended up in forklifts.

TJ's GMC January 1st, 2016 05:41 AM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by bigblockv6 (Post 60360)
GMC did have what the called the HC(High Compression) series of V6 engines, never installed in trucks. They were sold for industrial purposes, though they called them high compression the ratio did not exceed 9 to 1.
Quote:
Originally Posted by BobBray (Post 60366)
Yes they did. I think the idea was that those engines were primarily for use with propane/LNG/CNG fuels.

I wonder if any of the high compression engines ended up in forklifts.
I'll bet the extra compression boost helped alot though. Would be neat to find one.

Clyde January 1st, 2016 07:02 PM
Re: SO who came up with the GMC V6's???
 
Don Meyer, GMC Historian can be reached at 248-693-1227, he is in Michigan. My 1966 Owners manual specifies 92 octane gasoline, back when these trucks were new this was considered regular gas, today this is considered high octane. Anyone over 65 will remember being able to purchase 110 to 120 octane gas without any problem at most all gasoline retailers.

Cayoterun January 2nd, 2016 04:14 AM
Re: SO who came up with the GMC V6's???
 
Quote:
Originally Posted by BobBray (Post 60366)
Yes they did. I think the idea was that those engines were primarily for use with propane/LNG/CNG fuels.

I wonder if any of the high compression engines ended up in forklifts.
Great thread. Enjoy reading it.

All the the V12s, I've ever been around came factory equipt with hi-compression pistons since all of them was used as irrigation power plants, and used natural gas or propane.
I was never around V6s, except a few 478s on pumps, too.


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