Timing chain set recommendations
Instructor
Joined: Jul 2013
Posts: 112
Likes: 26
From: Gig Harbor, WA
I know that in the seventies, Cloyes used chain supplied by Reynolds of England. The chain was guaranteed to not stretch. I don't know who supplies their chain now, but I would definitely trust Cloyes.
Steve
Steve
Le Mans Master
Joined: Sep 2008
Posts: 5,662
Likes: 2,344
From: Lake Minnetonka, Mn
2018 C1 of Year Finalist
GM has a lot of history "unthinking". 440 tranny in the 80s and 90s; rack and pinions that leaked from day one and were never modified; let's not forget head gaskets on all those Buicks, Pontiac, and Oldsmobiles of the same period; fuel delivery issues to boot. Made those cars in the millions and never corrected a thing. Now, their 3.6 has timing chain stretching issues (only about $8K for that fix) but they are void of any plastic gearing. Looks like some progress is being made.
Last edited by Dan Hampton; Jan 25, 2019 at 10:39 PM.
Safety Car
Joined: Oct 2016
Posts: 4,617
Likes: 1,547
From: Olive branch Ms
GM has had their moments in engineering greatness but nothing and I mean nothing to approach the other brands 4.0 v6. A timing chain job on one of those is $4,000 if you catch it before your engine is trash. In their infinite wisdom the over head cam heads are the same for each side. Meaning the timing gear is on the front of one head and the rear of the other. You cannot change them in the car. An idler shaft runs the length of the engine to drive the rear gear and to get the chain off you have to remove the engine. Once you get it out and get ready to change the timing chains surprise surprise there are no timing marks or key ways or dowel pins on anything except the crank gear. The timing gears are free to rotate on the cam or idler shaft. They rely on one bolt on each gear to hold them in place. You are supposed to hav special tool br549 to hold everything in position while you change the gears and chains.
Pro
Joined: Feb 2002
Posts: 734
Likes: 51
From: ATLANTIC HIGHLANDS NJ
Cloyes C3023K OE replacement truck roller chain set or the four degrees advance/retard option version, C3023X. These sets are available in other brands including NAPA... same parts, just a different marketing channel.
The OE replacement passenger car silent chain set is C3021K. This is the second design all metal version that is narrower than the early set up to the '64 time frame that replaced the nylon cam gear type that was OE from '65 to ???, but these are junk and have a habit of shredding teeth. This nylon tooth cam sprocket set has not been manufactured for decades. I'm not sure if there is an adjustable version of the C3021K. Check the Cloyes Web site.
All should be in the range of 20-25 bucks for the set... shop around for the best price.
Duke
The OE replacement passenger car silent chain set is C3021K. This is the second design all metal version that is narrower than the early set up to the '64 time frame that replaced the nylon cam gear type that was OE from '65 to ???, but these are junk and have a habit of shredding teeth. This nylon tooth cam sprocket set has not been manufactured for decades. I'm not sure if there is an adjustable version of the C3021K. Check the Cloyes Web site.
All should be in the range of 20-25 bucks for the set... shop around for the best price.
Duke
Tks. DRC
Pro
Joined: Feb 2002
Posts: 734
Likes: 51
From: ATLANTIC HIGHLANDS NJ
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Joined: Feb 2002
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From: ATLANTIC HIGHLANDS NJ
Drifting
Joined: Sep 2024
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From: Florida
Cardboard box it came in was made in the USA... Friend who used to sell parts told me about fighting that problem...... No joke ....
Drifting
Joined: Sep 2024
Posts: 1,630
Likes: 1,068
From: Florida
And on the other hand I have seen many of those plastic teeth sucked up into the oil pump intake screen.....