replacing timing chain?
#16
Re: replacing timing chain?
thank you captian obvious, lol. But any roller set cloyes sells is based on a 2nd generation lt1 which has the vented optispark, for the first generation a roller timing set is not available, unless i'm missing something. actually both the roller timing sets i'm seeing are double rollers, theres a 9-3157, and a 9-3151 and the difference being the 9-3151 has a iron sprocket.
#18
Re: replacing timing chain?
Check a 9-3151.
I have one in my hand and it is a roller and the sprocket's appear the same(no iron). ya can get it with an oversized crank sprocket(std SBC) or get the GM spect one which has a loose chain that take load off of the front cam brg. It.s got enough load driving the pump.
I have one in my hand and it is a roller and the sprocket's appear the same(no iron). ya can get it with an oversized crank sprocket(std SBC) or get the GM spect one which has a loose chain that take load off of the front cam brg. It.s got enough load driving the pump.
Last edited by 1racerdude; 08-18-2005 at 12:35 PM.
#19
Re: replacing timing chain?
oh.. nevermind I guess the 9-3151 isn't a double roller, summit just messed up and put it as one on the description... but none the less
The 9-3151 is for a 2nd generation LT1 just like the 9-3157 meaning replacing the optispark, cover, etc, etc, just like with the 9-3157 double roller. I beleive reason the 9-3151 is more expensive is because it uses a iron sprocket unlike the 9-3157 which uses a billet steel.
Originally Posted by 93camaroLT1
theres a 9-3157, and a 9-3151 and the difference being the 9-3151 has a iron sprocket.
#20
Re: replacing timing chain?
note from the 3151:
"Timing chain has a 1/2 in. pitch. Can be installed on Generation 1 LT1, if the OptiSpark is updated to the new, second design. This will require new ignition, new front cover, and cam change to second design cam, the nose is different. The older OptiSpark"
"Timing chain has a 1/2 in. pitch. Can be installed on Generation 1 LT1, if the OptiSpark is updated to the new, second design. This will require new ignition, new front cover, and cam change to second design cam, the nose is different. The older OptiSpark"
#21
Re: replacing timing chain?
Originally Posted by 1racerdude
Check a 9-3151.
I have one in my hand and it is a roller and the sprocket's appear the same(no iron). ya can get it with an oversized crank sprocket(std SBC) or get the GM spect one which has a loose chain that take load off of the front cam brg. It.s got enough load driving the pump.
I have one in my hand and it is a roller and the sprocket's appear the same(no iron). ya can get it with an oversized crank sprocket(std SBC) or get the GM spect one which has a loose chain that take load off of the front cam brg. It.s got enough load driving the pump.
#22
Re: replacing timing chain?
Originally Posted by 93camaroLT1
note from the 3151:
"Timing chain has a 1/2 in. pitch. Can be installed on Generation 1 LT1, if the OptiSpark is updated to the new, second design. This will require new ignition, new front cover, and cam change to second design cam, the nose is different. The older OptiSpark"
"Timing chain has a 1/2 in. pitch. Can be installed on Generation 1 LT1, if the OptiSpark is updated to the new, second design. This will require new ignition, new front cover, and cam change to second design cam, the nose is different. The older OptiSpark"
And it does have billett for both sprocket's.
Time to upgrade.
#24
Re: replacing timing chain?
Originally Posted by 1racerdude
I knew they made one but mine is for '95 up Sooooo.
And it does have billett for both sprocket's.
Time to upgrade.
And it does have billett for both sprocket's.
Time to upgrade.
#25
Re: replacing timing chain?
Originally Posted by 93camaroLT1
the reason my std SBC cloyes double roller didn't work is because I couldn't run the my non-vented opti off of it...
Call Cloyes.
Last edited by 1racerdude; 08-18-2005 at 12:49 PM.
#28
Re: replacing timing chain?
yeah, just got off the phone with cloyes, unfortunetly the only timing set they make for a splined non vented opti spark is the 9-9100 which isn't a roller and the sales guy at cloyes actually just reccommended just using the stock timing set and chain if i'm not prepared to spend $400 to replace the distributor, front cover, etc
#30
Re: replacing timing chain?
i suppose the best time to replace that non vented opti spark to a vented one might be when the mine goes out down the road (from what I hear, they are pretty ****ty) and then just move up to a double roller.