Double Roller Timing Chain Possible on LT4 ?
Thread Starter
Le Mans Master
Joined: Feb 2000
Posts: 9,600
Likes: 88
From: Springfield PA
Philly 'Burbs Events Coordinator
Double Roller Timing Chain Possible on LT4 ?
Posting this for a friend who doesn't have access.
Does anyone know if there is any way to run a double roller timing chain on an LT4 based optispark and timing gear set? It seems as though something could be done with the longer dowel on the end of the cam but ??
:cheers:
Does anyone know if there is any way to run a double roller timing chain on an LT4 based optispark and timing gear set? It seems as though something could be done with the longer dowel on the end of the cam but ??
:cheers:
Drifting
Joined: Jul 2000
Posts: 1,661
Likes: 4
From: Phoenix, Arizona
Re: Double Roller Timing Chain Possible on LT4 ? (Rex Ruby)
You might want to try the GMPP Extreme Duty Timing Set #12370835 - designed for very high output LT1/LT4 engines. I have one. I don't know of a double roller that fits.
Burning Brakes
Joined: Oct 2002
Posts: 1,152
Likes: 1
From: Wichita KS
Re: Double Roller Timing Chain Possible on LT4 ? (NavyVet)
Some people do run a Std double roller chain on the LT series motors. I know they dump the gear drive for the water pump & then run an electric water pump. I don't know what else is involved.
Melting Slicks
Joined: Jan 2000
Posts: 3,418
Likes: 1
From: NW Chicago Suburbs
Re: Double Roller Timing Chain Possible on LT4 ? (superlund)
...they dump the gear drive for the water pump & then run an electric water pump....
Eric
Racer
Joined: Jul 2016
Posts: 299
Likes: 15
Sorry to Necro-post but this is my exact issue. I have an LT-4 and I already have the electric water pump so I just need to plug the hole in the cover and get a chain. Can you run an L-98/TPI double roller in the factory LT-4 cover so you can run the Opti? Or just run a standard SBC single roller?
Race Director
Joined: Sep 2001
Posts: 14,680
Likes: 752
From: NEwhere Ohio
Run the LT4 extreme duty timing set.
i have heavy valve spring pressures and this works great
If you go this route, dont be one of the camaro ‘dummies’ that tries to reuse the stock water pump drive gear (and then gets mad bc of metal shavings ruining your engine)
you have got to install the special water pump drive gear included in the kit ! Its softness/hardness is correct for the gear set
i have heavy valve spring pressures and this works great
If you go this route, dont be one of the camaro ‘dummies’ that tries to reuse the stock water pump drive gear (and then gets mad bc of metal shavings ruining your engine)
you have got to install the special water pump drive gear included in the kit ! Its softness/hardness is correct for the gear set
Racer
Joined: Jul 2016
Posts: 299
Likes: 15
Run the LT4 extreme duty timing set.
i have heavy valve spring pressures and this works great
If you go this route, dont be one of the camaro ‘dummies’ that tries to reuse the stock water pump drive gear (and then gets mad bc of metal shavings ruining your engine)
you have got to install the special water pump drive gear included in the kit ! Its softness/hardness is correct for the gear set
i have heavy valve spring pressures and this works great
If you go this route, dont be one of the camaro ‘dummies’ that tries to reuse the stock water pump drive gear (and then gets mad bc of metal shavings ruining your engine)
you have got to install the special water pump drive gear included in the kit ! Its softness/hardness is correct for the gear set
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Race Director
Joined: Sep 2001
Posts: 14,680
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From: NEwhere Ohio
Racer
Joined: Jul 2016
Posts: 299
Likes: 15
I got ther larger HD version, they say it's near 100% reliable. Only problem would be road racing, which im not doing. Mostly just daily drive and occasional drag racing, which is PERFECT. I can leave the water pump and fans running to keep the motor at exactly the temp I want while in the staging lanes.
Race Director
Joined: Sep 2001
Posts: 14,680
Likes: 752
From: NEwhere Ohio
I got ther larger HD version, they say it's near 100% reliable. Only problem would be road racing, which im not doing. Mostly just daily drive and occasional drag racing, which is PERFECT. I can leave the water pump and fans running to keep the motor at exactly the temp I want while in the staging lanes.
Racer
Joined: Jul 2016
Posts: 299
Likes: 15
That's why electrics are so nice for daily drivers and cars that get hot sitting in traffic (or drag racing). At idle, you now get more water flow than the mechanical supplies at freeway rpms.
