Timing chain cover for 8" damper - Team Camaro Tech
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post #1 of 9 (permalink) Old Sep 23rd, 03, 05:52 PM Thread Starter
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I thought that the timing chain cover for an 8" damper used on '69 small blocks was first produced in 1968 for '69 model cars when the water pump went to the long style. I have such a cover that appears very correct but has a 3 68 date stamp. Was this part used in Vettes or something else in 1968? Thanks,
Gary

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post #2 of 9 (permalink) Old Sep 23rd, 03, 06:53 PM
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If I'm not mistaken, the timing mark on the 69 balancer is 8* further advanced than a 68. So, even though it will fit physically, the timing marks will be off. Someone correct me if I'm wrong.

John
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post #3 of 9 (permalink) Old Sep 24th, 03, 02:05 AM
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John is correct, '69 & later(?), have different placed timing mark than '68 & earlier. Use the same year timing tab as with the h/balancer.

Eight-inch diameter h/bal's do fit with short water pumps.

Has anybody done a power/E.T. comparision between a small balancer and a large balancer?

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post #4 of 9 (permalink) Old Sep 24th, 03, 12:09 PM
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Eight-inch diameter h/bal's do fit with short water pumps. ???

Is there a difference in the short water pumps used on the Camaros and the 3/4" shaft ones used on Corvettes?

8" balancers with the short w/p I mentioned above
were used on all the Hi perf corvettes. Yes even the mid to late 70's ones.
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post #5 of 9 (permalink) Old Sep 24th, 03, 06:11 PM Thread Starter
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Thanks for the replies. What I am asking was the same timing cover used on a 1969 302 engine used on any 1968 or earlier engines? I was under the impresion that this timing cover was first used in 1968 for 1969 cars. I am asking this question because I have a cover that matches my 69 302 cover but is date stamped March 1968.
Gary

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post #6 of 9 (permalink) Old Sep 25th, 03, 02:00 AM
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There is a difference between the Camaro w/p and 3/4" Corvette w/p. Camaro w/p has the return heater hose above the lower radiator hose. The Corvette w/p has the heater hose returning to the top of the w/p.

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post #7 of 9 (permalink) Old Sep 25th, 03, 12:47 PM
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Yes it does.

Is that what causes it to interfere with the 8" dampner?

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post #8 of 9 (permalink) Old Sep 25th, 03, 04:28 PM
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Gary,
The timing covers have odd date codes. I have actualy talked to Jerry MacNiesh about this and even he is unsure of how the date codes run on those covers. I have seen inconsistant dates myself.

-Mark.
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post #9 of 9 (permalink) Old Sep 26th, 03, 08:13 AM
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My 8 inch balancer fit with a short Stewart water pump and no clearance issues. Ran the factory 68 Z/28 deep groove pulleys also.
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