Which timing chain set?

C Sickness

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I'm doing my radiator service. Since I'm in the neighborhood, thought I'd stop by and change out the 50 year old plastic timing gear.

In looking online, it's asking about a "3 bolt" or "1 bolt" camshaft gear. I don't know which one I have. 1970 Chrysler 300 w/ 440/350H.P. "TOC"

I'm thinking about a double roller chain set, Cloyes or similar. Does anyone have a P/N, or know about 3bolt/1bolt?
 
I'm doing my radiator service. Since I'm in the neighborhood, thought I'd stop by and change out the 50 year old plastic timing gear.

In looking online, it's asking about a "3 bolt" or "1 bolt" camshaft gear. I don't know which one I have. 1970 Chrysler 300 w/ 440/350H.P. "TOC"

I'm thinking about a double roller chain set, Cloyes or similar. Does anyone have a P/N, or know about 3bolt/1bolt?

The T-Code engine has a single bolt camshaft. The Cloyes double roller is a forever timing set although it is decidedly over kill for a 350 horse engine. It also will run a little noisier than the Cloyes all metal timing set. The engine will probably wear out before you need to worry about replacing either Cloyes unit.

Dave
 
If this is confirmed to be the original engine, a one bolt timing set would be required. My recommendation is to buy a Cloyes Timing Chain set. They are US made and of good quality material. If you have any questions, PM me.
 
I've always gone with the three bolt cam gear and double roller chain. That's just my preference.
 
Cloyes set hands down.
I use Cloyes for all my engines.
Just verify your particular application.
 
Are you saying the cam has both a three bolt pattern and a single bolt pattern? Or is it one or the other?

The standard cam was a single bolt unit on most applications. The three bolt cam is found 6BBL engines and a few high performance engines. If the engine has not been rebuilt or replaced, it will be a single bolt cam for a T-Code application.

Dave
 
I'll concur, from my own experiences with my '77 Camaro 305, that the Cloyes Plus-Roller chain set I put in it at about 92K was still in it when we swapped the 305 for a 350 at about 625K miles. If it would last that long in a Chevy, it would probably be "forever and forever" in a Chrysler engine.

I could hear a little "bicycle chain" noise at idle, but I knew what it was and that was fine. Just like some guys with gear drives like that noise, too.

IF you upgrade from the stock cam, then you can also upgrade to the 3-bolt set-up on the cam and timing set. Otherwise, you've most probably got the stock 1-bolt set-up. IIRC, the 1-bolt set-up also has a locating dowel to ensure things stay where they should be, cam sprocket and camshaft interface.

To me, the main advantage of the roller chain set-up is long-term durability insurance, no more, no less. More than with the stock-replacement steel cam sprocket timing sets.

As a side note, as the timing set does not receive any direct oil, just "splash", I coated the rear of the cam sproket with moly cam assy lube, plus some on the chain/sproket interface, and then poured some of the old 1-pint GM EOS over the installed chain assy. That way, just as with the new cam lobes, there was lube there when the engine was startedfor the first time. Might have been over-kill, but that's fine, too, in this case.

I consider Cloyes to be a premium product. Mellings is good too, for oil pumps, although thehy have seemed to expand their product lines in more recent times. FWIW

Just some thoughts and experiences,
CBODY67
 
I have a T code 440 and used a Melling double roller, but I’m sure a single would have worked just as well. You should have a single bolt, unless someone changed the cam in the past.

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There's the picture! Timing set "dot-to-dot", keyway pointing to #1 cyl piston pin centerline.

Thanks,
CBODY67
 
Cloyes C3044 looks to be it. Single bolt, double roller set. Anyone have a favorite front cover gasket set? Victor Reinz, I think.
 
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Cloyes C3044 looks to be it. Single bolt, double roller set. Anyone have a favorite front cover gasket set? Victor Reinz, I think.

I use Victors, be sure to oil up the crank seal and the harmonic balancer hub prior to install. Also put a bead if quality sealant on the front lip of the pan where it meets the block on both sides.

Dave
 
Gray does better with higher temperatures. Some folks provide cork gaskets made for just the front of the oil pan down there also. I installed a double roller Enginetech timing chain set last Christmas which smoothed out some hitches which the old Cloyes Ma Par put in that 383 when built was starting to allow. I kept the old stuff though as it wasn't too badly worn, despite its years....
 
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