LT1-LT4 Modifications 1993-97 Gen II Small Block V8

lt1 timing chain help!!

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Old Dec 19, 2007 | 04:40 PM
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Default lt1 timing chain help!!

i have a 94 z28 and i want to order a new timing chain but can only find the extremely expensive ones specifically for the lt1.... will a timing chain for a small block with a factory roller work?...
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Old Dec 19, 2007 | 04:54 PM
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The top sprocket on the timing chain for the earlier roller cam 350 has no provision for driving the water pump. If you use an electric water pump, the early chain will work after a little grinding on the inside of the timing cover.
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Old Dec 19, 2007 | 05:51 PM
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The top sprocket on the timing chain for the earlier roller cam 350 has no provision for driving the water pump. If you use an electric water pump, the early chain will work after a little grinding on the inside of the timing cover.
That will only work if you have a 95 or later LT1 with a vented opti.

You have a 94, so the opti is also driven by your cam gear. Thats why you can only use a normal LT1 timing chain. If you convert to a vented opti setup and an ewp, you can use a normal SBC double roller chain.
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Old Dec 19, 2007 | 05:54 PM
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Originally Posted by thebufenator
That will only work if you have a 95 or later LT1 with a vented opti.

You have a 94, so the opti is also driven by your cam gear. Thats why you can only use a normal LT1 timing chain. If you convert to a vented opti setup and an ewp, you can use a normal SBC double roller chain.
lol Can't you just drill a hole by placing the old one over the new one, and then clamping them together?
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Old Dec 19, 2007 | 07:33 PM
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How many miles are on the car? Chances are your stock sprockets are fine. Just go to the GM dealer and order up a new chain. Should be $40-$60 I would guess.
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Old Dec 19, 2007 | 08:25 PM
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I did h/c two years ago with my camaro, replaced timing chain, all sprockets with new original oem from GM. NO PROBLEMO! Handling 6700 rpm shift points, even with 150 shot of giggle juice AND I still have this 10.44 @130 GRIN on my face!
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Old Dec 19, 2007 | 09:42 PM
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ok so the stock timing chain from gm is a pretty good setup then?...do you remember how much yours was?
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Old Dec 20, 2007 | 07:50 AM
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I bought a Dynagear setup and this is what I found when I opened the box..

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Old Dec 20, 2007 | 08:21 AM
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Just get a chain from orillys, just got one about 3 months ago and it was less than $20 dollers.
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Old Dec 20, 2007 | 02:18 PM
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Originally Posted by 94Aquaformula
Just get a chain from orillys, just got one about 3 months ago and it was less than $20 dollers.
+1 for just the chain.If there is no excessive wear on your sprockets
get just a chain.
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Old Dec 22, 2007 | 07:57 PM
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If the gears look OK just order a replacement chain (10128485 for a 96LT1) from GMPartsDirect.com
Costs $28.12 +shipping
You can't go wrong with original GM stuff.
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