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Re: [GMCnet] Reviving the Cad 500 [message #165342 is a reply to message #165291]

Wed, 04 April 2012 15:38

Matt Colie

Messages: 8547
Registered: March 2007
Location: S.E. Michigan

Karma:

Senior Member

Bob de Kruyff wrote on Wed, 04 April 2012 11:03

JohnL455 wrote on Wed, 04 April 2012 08:24

Well I can say I've had most all the GM flavored engines over the years. Still have a 76 Grand LeMans with a real Pontiac 350, albiet a 2BBL. Never had a problem and in that low HP version and being a 350 out of the same block, I don't think it's possible to have it hurt itself. I'll hang on to it. I guess you would need the NTSB then to find out what went wrong wten they exploded, and that was not the real focus of the testing. I was just curious of what led to the failures and what the weak points of the Buick and Cad were. I know on the Northstars it's the head bolt creep that causes Dexcool thirst.

Although I wouldn't dismiss the results entirely, these were transmission test and we would routinely disassemble the trannies to check wear, etc. We didn't do any of that for the engines and ran them till they gave up. On the otherhand, there are engine dynamometer tests that will run at WOT for 500 hours in a similar abusive state. Usually, there was a rod flying out of the side of the block but it's hard to say what the root causes were, other than some brands were distinctly worse than others.

The thing missed here is that the engines used in everybody's transmission test program are straight of the assembly line and considered a disposable item. They are typically run out of envelope for as long as at least that test requires. It is not atypical for a single engine to be used for multiple transmission validations. It is no surprise when they grenade. There is also another waiting on an engine pallet so the test can resume.

I could tell you stories of Detroit testing that would astound you.

And John,

It isn't head bolt creep that is the problem with the Northstar. It was that they didn't want to buy the right (more expensive) gasket that I proposed or revise the joint design prior to production. The joint weakness was obvious to us (McCord Gasket) early in the development phase, but we didn't win the bid. So, I talked management into tooling for the aftermarket and packaging the "fix it right kit". We did OK on that one.

Matt

Matt & Mary Colie - Chaumière -'73 Glacier 23 - Members GMCMI, GMCGL, GMCES
Electronically Controlled Quiet Engine Cooling Fan with OE Rear Drum Brakes with Applied Control Arms
SE Michigan - Near DTW - Twixt A2 and Detroit

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[Message index]

		[GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 12 March 2012 21:11
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 12 March 2012 21:51
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 07:44
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Mon, 12 March 2012 22:05
		Re: [GMCnet] Reviving the Cad 500 By: sgltrac on Mon, 12 March 2012 23:42
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Mon, 12 March 2012 23:51
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Tue, 13 March 2012 06:55
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 07:08
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 08:02
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 09:23
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 12:05
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 12:58
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 18:15
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 13 March 2012 18:58
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 13 March 2012 19:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 13 March 2012 19:34
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Wed, 14 March 2012 01:23
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 14 March 2012 07:28
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 14 March 2012 21:29
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Thu, 15 March 2012 01:22
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Thu, 15 March 2012 08:43
		Re: [GMCnet] Reviving the Cad 500 By: k2gkk on Thu, 15 March 2012 11:53
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 15 March 2012 21:15
		Re: [GMCnet] Reviving the Cad 500 By: Steve L. Clevenger on Fri, 16 March 2012 00:15
		Re: [GMCnet] Reviving the Cad 500 By: jimk on Fri, 16 March 2012 01:30
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Fri, 16 March 2012 10:09
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Fri, 16 March 2012 01:37
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Thu, 15 March 2012 06:04
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Fri, 16 March 2012 07:54
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 16 March 2012 08:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sat, 17 March 2012 18:46
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Sat, 17 March 2012 19:24
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sat, 17 March 2012 19:31
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Sun, 18 March 2012 08:55
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 20:31
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Sun, 18 March 2012 20:51
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Sun, 18 March 2012 21:16
		Re: [GMCnet] Reviving the Cad 500 By: midlf on Sun, 18 March 2012 22:09
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Sun, 18 March 2012 22:04
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Sun, 18 March 2012 22:27
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Sun, 18 March 2012 22:18
		Re: [GMCnet] Reviving the Cad 500 By: Ken Burton on Sun, 18 March 2012 23:35
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Mon, 19 March 2012 01:05
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Mon, 19 March 2012 06:54
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Mon, 19 March 2012 06:50
		Re: [GMCnet] Reviving the Cad 500 By: USAussie on Mon, 19 March 2012 07:05
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Mon, 19 March 2012 07:22
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Mon, 19 March 2012 10:01
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Tue, 20 March 2012 07:16
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 08:54
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Tue, 20 March 2012 11:38
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 12:29
		Re: [GMCnet] Reviving the Cad 500 By: GMC Cruse on Sat, 24 March 2012 11:09
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Sat, 24 March 2012 15:32
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:09
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Sat, 24 March 2012 22:45
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Sun, 25 March 2012 07:00
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Mon, 19 March 2012 08:02
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Mon, 19 March 2012 09:56
		Re: [GMCnet] Reviving the Cad 500 By: Carl S. on Mon, 19 March 2012 13:08
		Re: [GMCnet] Reviving the Cad 500 By: George Beckman on Sat, 24 March 2012 18:05
		Re: [GMCnet] Reviving the Cad 500 By: Dolph Santorine on Sat, 24 March 2012 18:25
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:21
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 24 March 2012 21:17
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Mon, 26 March 2012 20:55
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Tue, 27 March 2012 07:37
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 14:12
		Re: [GMCnet] Reviving the Cad 500 By: Mr ERFisher on Tue, 27 March 2012 14:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 14:21
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Tue, 27 March 2012 19:34
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 27 March 2012 21:20
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Wed, 28 March 2012 07:48
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:05
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Wed, 28 March 2012 08:00
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:12
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 31 March 2012 18:06
		Re: [GMCnet] Reviving the Cad 500 By: shawnee on Sat, 31 March 2012 20:11
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 31 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Mon, 02 April 2012 18:28
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 02 April 2012 18:43
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 18:54
		Re: [GMCnet] Reviving the Cad 500 By: roy1 on Tue, 03 April 2012 11:15
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 18:51
		Re: [GMCnet] Reviving the Cad 500 By: Carleton Douglas[1] on Tue, 03 April 2012 08:11
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 03 April 2012 19:18
		Re: [GMCnet] Reviving the Cad 500 By: Larry on Tue, 03 April 2012 16:14
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 03 April 2012 19:36
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Wed, 04 April 2012 16:34
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 19:40
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Sat, 17 March 2012 20:15
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:49
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Sat, 17 March 2012 20:25
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:44
		Re: [GMCnet] Reviving the Cad 500 By: ljdavick on Sun, 18 March 2012 03:44
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sun, 18 March 2012 07:42
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 16 March 2012 20:39
		Re: [GMCnet] Reviving the Cad 500 By: WD0AFQ on Fri, 16 March 2012 22:33
		Re: [GMCnet] Reviving the Cad 500 By: George Beckman on Sat, 17 March 2012 00:41
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 03:32
		Re: [GMCnet] Reviving the Cad 500 By: James Hupy on Sat, 17 March 2012 10:43
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Sat, 17 March 2012 18:25
		Re: [GMCnet] Reviving the Cad 500 By: Ernest Dankert on Sat, 17 March 2012 22:48
		Re: [GMCnet] Reviving the Cad 500 By: roy1 on Mon, 19 March 2012 11:12
		Re: [GMCnet] Reviving the Cad 500 By: Dennis S on Mon, 19 March 2012 11:30
		Re: [GMCnet] Reviving the Cad 500 By: Ed Jarmul on Mon, 19 March 2012 11:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 19 March 2012 14:39
		Re: [GMCnet] Reviving the Cad 500 By: jaholland on Mon, 19 March 2012 18:28
		Re: [GMCnet] Reviving the Cad 500 By: Adrien G. on Mon, 19 March 2012 23:17
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Tue, 20 March 2012 08:09
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 09:46
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 28 March 2012 13:51
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Wed, 28 March 2012 19:58
		Re: [GMCnet] Reviving the Cad 500 By: klassic kampers on Wed, 28 March 2012 20:19
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 22:10
		Re: [GMCnet] Reviving the Cad 500 By: rssbob on Wed, 28 March 2012 22:14
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 28 March 2012 22:37
		Re: [GMCnet] Reviving the Cad 500 By: Steve L. Clevenger on Mon, 19 March 2012 23:36
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Wed, 28 March 2012 01:48
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 29 March 2012 18:03
		Re: [GMCnet] Reviving the Cad 500 By: kingd on Sat, 31 March 2012 20:08
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Mon, 02 April 2012 20:21
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Mon, 02 April 2012 20:42
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Tue, 03 April 2012 19:17
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Tue, 03 April 2012 22:31
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Tue, 03 April 2012 23:36
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Wed, 04 April 2012 09:24
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 04 April 2012 10:03
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Wed, 04 April 2012 15:38
		Re: [GMCnet] Reviving the Cad 500 By: k2gkk on Wed, 04 April 2012 16:00
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Wed, 04 April 2012 17:20
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Wed, 04 April 2012 19:06
		Re: [GMCnet] Reviving the Cad 500 By: JohnL455 on Wed, 04 April 2012 17:28
		Re: [GMCnet] Reviving the Cad 500 By: Matt Colie on Thu, 05 April 2012 09:16
		Re: [GMCnet] Reviving the Cad 500 By: g.winger on Wed, 04 April 2012 19:42
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Wed, 04 April 2012 20:33
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Wed, 04 April 2012 21:20
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Thu, 05 April 2012 05:26
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:21
		Re: [GMCnet] Reviving the Cad 500 By: Dan W on Thu, 05 April 2012 09:08
		Re: [GMCnet] Reviving the Cad 500 By: Bob de Kruyff on Thu, 05 April 2012 12:51
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Fri, 06 April 2012 06:52
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Thu, 05 April 2012 07:09
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:16
		Re: [GMCnet] Reviving the Cad 500 By: jhbridges on Fri, 06 April 2012 06:47
		Re: [GMCnet] Reviving the Cad 500 By: Steven Ferguson on Fri, 06 April 2012 07:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 06 April 2012 07:56
		Re: [GMCnet] Reviving the Cad 500 By: Richard Brown on Thu, 05 April 2012 03:47
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:10
		Re: [GMCnet] Reviving the Cad 500 By: g.winger on Thu, 05 April 2012 05:19
		Re: [GMCnet] Reviving the Cad 500 By: GMC_LES on Thu, 05 April 2012 07:45
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 08:27
		Re: [GMCnet] Reviving the Cad 500 By: Kosier on Thu, 05 April 2012 21:42
		Re: [GMCnet] Reviving the Cad 500 By: John Heslinga on Thu, 05 April 2012 13:19
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Thu, 05 April 2012 22:16
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Fri, 06 April 2012 08:06
		Re: [GMCnet] Reviving the Cad 500 By: Ken Henderson on Fri, 06 April 2012 08:19
		Re: [GMCnet] Reviving the Cad 500 By: Marsh Wilkes on Fri, 06 April 2012 09:05

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