I need to purchase a timing chaing.. I am looking at the Cloyes Billet set that runs around $80.00.

The motor is a 489, and will be 99% street use.

Do I need a chain like this or will a less expensive one still work fine.

TY

Big D

I'd buy quality parts anytime, and I did just that with my 540. I think Cloyes has several different timing sets, and personally I wouldn't use the one with slots for the cam bolts and the fragile little eccentric. I went with one that has 9 slots in the crank gear (just be sure the chamfer is large enough that it doesn't hit the crank fillet radius), so I can adjust things there and not rely on bolts clamping a slot. You can probably get one like mine from Cloyes, though mine is a Lunati set.

I'd buy quality parts anytime, and I did just that with my 540. I think Cloyes has several different timing sets, and personally I wouldn't use the one with slots for the cam bolts and the fragile little eccentric. I went with one that has 9 slots in the crank gear (just be sure the chamfer is large enough that it doesn't hit the crank fillet radius), so I can adjust things there and not rely on bolts clamping a slot. You can probably get one like mine from Cloyes, though mine is a Lunati set.


I have had really good luck using the Cloyes Hex Adjust , it makes dialing in the cam very easy. Just make sure you back off the rockers before trying to adjust the cam timing or you will destroy the eccentric adjuster.

I just use a basic Cloyes 3 position set. The $30 type. Works fine...been on my 540 for a long time with some 7500 rpm blasts, lots of street miles and a solid roller with 660#'s of springs.

There is a LOT of marketing hype in the timing chain market.



JIM

Rollmaster with the Iwis chain is the best set. Rollmaster has the exclusive rights to the type of Iwis chain they get. Unlike most they are pre stretched in assembled sets and are available for line honed blocks in 2, 4,6,8,10, 12, 14 oversized.

Rollmaster with the Iwis chain is the best set. Rollmaster has the exclusive rights to the type of Iwis chain they get. Unlike most they are pre stretched in assembled sets and are available for line honed blocks in 2, 4,6,8,10, 12, 14 oversized.

That is what I used,....nice piece.
FWIW cam degreed out within 1/4*

I've heard the 9 position gear can cause stress fractures on the crank snout? Any truth to that one?

I run an Edelbrock(someone else makes it, has a Rolon chain I think). Cast iron cam gear, 3 position crank gear. Same set I have run in 2 different engines going back about 14 years. Both solid roller, both big springs. Both have seen 7500 rpms. No problems at all. It was around $45 IIRC. I machined the cam gear for a thrust washer, never have used a torrington bearing.

Yes, I've heard the rumor about the 9 position gear and wouldn't ya know thats what I'm running and no problems yet=but with that said when I need another crank will get regular Cloyes or equivalent gear.

The motor is a 489, and will be 99% street use.

Cloyes sets from 20-50 bucks depending on if you need multiple keyways. Street motor, save the extra cash for fuel.

Timing chains & gears from Summit (http://store.summitracing.com/egnsearch.asp?Ns=P_SRE_DisplayPrice%7C0&N=700+4294892074+4294908216+4294840133+400043+115&Ntt=&Ntk=&rsview=sku&RC=10)

I was going to go with the Cloyes 9 key-way set, but i don't know, my machinist said he could just get the offset bushing and do it that way with any set I choose.

Big D

In the last few years we have seen that Cloyes has been using the Iwis chains and they have really seem to be in good shope after a year or 2 circle track racing. We have always used the 9-3100 as its easy to degree the cam in.

If we had to do the bushing deal we would have to charge for the extra time and machine work involved Which would offset the cost of the Hex-A-Just set up.

I've heard the 9 position gear can cause stress fractures on the crank snout? Any truth to that one?


=
Hi Jay,

Old post :)
http://www.chevelles.com/forums/showpost.php?p=918945&postcount=11

And complete thread
http://www.chevelles.com/forums/showthread.php?t=128355

And another
http://www.chevelles.com/forums/showthread.php?t=162333

No
I have seen the blurb & picture stating the gear w/ extra keyways caused the problem due to extra keyways & it makes no sense what so ever.
It may have been the gear that caused the crank breakage but it was the relief not being large enough, not the keyways.

The picture also showed obvious signs of the damper moving
It also showed signs of the notches getting into the radius

If the gear does not have enough clearance for the radius of the crank it makes no difference if it has 1 keyway or 9, it is going to put stress risers in the radius
This part of the gear should never touch the crank, simple as that so the number of keyways is academic,, ;)

=
Hi Jay,

Old post :)
http://www.chevelles.com/forums/showpost.php?p=918945&postcount=11

And complete thread
http://www.chevelles.com/forums/showthread.php?t=128355

And another
http://www.chevelles.com/forums/showthread.php?t=162333

No
I have seen the blurb & picture stating the gear w/ extra keyways caused the problem due to extra keyways & it makes no sense what so ever.
It may have been the gear that caused the crank breakage but it was the relief not being large enough, not the keyways.

The picture also showed obvious signs of the damper moving
It also showed signs of the notches getting into the radius

If the gear does not have enough clearance for the radius of the crank it makes no difference if it has 1 keyway or 9, it is going to put stress risers in the radius
This part of the gear should never touch the crank, simple as that so the number of keyways is academic,, ;)

Thanks Mike! I knew I had seen/heard that before, but never anything definitive.

In the last few years we have seen that Cloyes has been using the Iwis chains and they have really seem to be in good shope after a year or 2 circle track racing. We have always used the 9-3100 as its easy to degree the cam in.

If we had to do the bushing deal we would have to charge for the extra time and machine work involved Which would offset the cost of the Hex-A-Just set up.


I am in the middle of trying to find a rollmaster chain. Which Cloyes uses the IWIS chain?

thanks.

http://store.summitracing.com/partdetail.asp?part=CLO%2D9%2D3610TX9&autoview=sku

This one maybe??

Iam running a procomp billet timing chain a true roller one builder says he is suprised at how good it looks but we will see if ti is as good as advertised soon enough.

Iam running a procomp billet timing chain a true roller one builder says he is suprised at how good it looks but we will see if ti is as good as advertised soon enough.
=
Your cam is ordered
It will be on a 108, I changed my mind :D
It will be about 2 feet long & have a bunch of little bumps on it too,,,, :p

=
Your cam is ordered
It will be on a 108, I changed my mind :D
It will be about 2 feet long & have a bunch of little bumps on it too,,,, :p
ok I posted another thread my builder was worried about my short jonts to car shows being a problem with a race engine not me though he also was worried about spring preassure and the open plane intake not me lol. he said it would be more street freindly if I had went 112 or 114 LSA i yawned he went inside I think a lil miffed I didnt use his $100 @.050 286/288 .660/.603 cam on a 110LSA like that would have been a good street cam lol I dont know why he wanted me to get a street cam the dang stall is 4500-5000 so like its really gonna be street freindly.
Sorry about the highjack and rant to the tread starter.
Thanks again Mike heres the link by the way.
http://www.chevelles.com/forums/showthread.php?t=235645
Jeff

ok I posted another thread my builder was worried about my short jonts to car shows being a problem with a race engine not me though he also was worried about spring preassure and the open plane intake not me lol. he said it would be more street freindly if I had went 112 or 114 LSA i yawned he went inside I think a lil miffed I didnt use his $100 @.050 286/288 .660/.603 cam on a 110LSA like that would have been a good street cam lol I dont know why he wanted me to get a street cam the dang stall is 4500-5000 so like its really gonna be street freindly.
Sorry about the highjack and rant to the tread starter.
Thanks again Mike heres the link by the way.
http://www.chevelles.com/forums/showthread.php?t=235645
Jeff
=
I would not worry too much,,, the thread is over a year old :D

I am in the middle of trying to find a rollmaster chain. Which Cloyes uses the IWIS chain?

thanks.

All the 9-3100A timing sets we use have those chains.

Thanks Carl!!!!! Those are all listed as smallblock chains, do you have the numbers for big blocks too?