SBC timing chain vs a roller cam timing chain
10-25-2002, 03:16 PM
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
SBC timing chain vs a roller cam timing chain
What is the difference between a standard SBC timing chain set verses one for the 87-up blocks with a roller cam? I told my shop to order me a Cloyes full roller #9-3145 for my roller cam and he gets me a dynagear part number #78100 which is listed a a standard SBC chain and there is a different number my app. Should I return it or will it work? How does dynagear compare to cloyes?
10-25-2002, 03:21 PM
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Car: 4
Engine: 6
Transmission: 5
One of the idiotic features of the factory's Frankenstein roller mess, in addition to it requiring a completely different block casting, is that the cam gear is incompatible... it is a different thickness to accommodate the retainer plate, and the cam has the little step on its nose for the plate too. AFAIK the chain and crank gear are not necessarily different.
10-25-2002, 05:27 PM
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totally differant. i had parts guy sell me a cloyes roller set for a old style engine and found out about it on a saturday nite. to make matters worse i had a spare just like it sitting on the shelf but none for a roller engine.
10-25-2002, 07:00 PM
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Car: 1987 Monte Carlo SS
Engine: L98
Transmission: 200-4R
Axle/Gears: 7.625 10 bolt/3.73s
You guys think I should trade it for another dynagear that they had in stock for roller or go cloyes like i had planned? He charged me the cloyes price of $80.
10-26-2002, 09:08 AM
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Car: 1988 IROC-Z
Engine: L98 (350 TPI)
Transmission: MD8 (700 R4) + 3.42 LS1 Rear
anyone know what the the cheapest price on a double roller timing chain? not that stock crappy type. if i am going to change it out might as well get a lil better one. i need to change it out and see if that will help my slight idle/miss problem i'm having. besides i don't think the engine will last must longer so a cloyes is not necessary.
10-26-2002, 09:18 AM
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Car: 90 Formula
Engine: 355 C.I.
Transmission: 5 Speed
Axle/Gears: 3.42
The factory performance chain is a single roller.. Anyone know what they are cost and are they any good ?
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10-26-2002, 10:20 AM
#8
The GMPP single roller uses a larger pitch length chain than most aftermarket double-row sets. Most double-rows are RC35. The GMPP chain is stronger than the aftermarkets, but is also a lot heavier, even with the powdered metal sprockets now available. The double-row sets are generally more than adequately strong to turn almost any cam and oil pump, so the GMPP set may be overkill and just excess mass.
The better sets have "true roller" chain links instead of plain pin and bushing links in their chain. These will cost more, but will wear a lot longer and maintain valve timing better in the long run.
The better sets have "true roller" chain links instead of plain pin and bushing links in their chain. These will cost more, but will wear a lot longer and maintain valve timing better in the long run.
10-26-2002, 10:20 AM
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I use GM#12371043 for factory hydraulic roller cams.
It is a single roller kit and comes with the retainer and bolts.
49.95 @ www.sdpc2000.com
Lonnie
It is a single roller kit and comes with the retainer and bolts.
49.95 @ www.sdpc2000.com
Lonnie
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