L67 / L36 timing set interchangeable? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


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Old 10-05-2007, 02:07 AM   #1
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Default L67 / L36 timing set interchangeable?

Is the timing set (chain, gears, dampener) interchangeable between an L67 and an L36?
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Old 10-05-2007, 02:26 AM   #2
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It should be... there'* no difference in the Rollmaster sets you buy from aftermarket vendors, so the stockers should be the same
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Old 10-05-2007, 02:34 AM   #3
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Ah Ben, just the guy I was thinking of...sending PM.
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Old 10-05-2007, 07:31 AM   #4
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I agree.. from everything I've seen, they look identical. Afterall..it'* the same block right?
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Old 10-05-2007, 10:16 AM   #5
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They are not. Well, the cam gear isn't. It retards the L67 cam a couple degrees.
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Old 10-05-2007, 12:25 PM   #6
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I was wondering about that...poking around the Rock Auto site looking at part numbers, all parts of the timing set were the same p/n between L36 and L67, except the cam gear.

95naSTA, would you happen to know how many degrees the L67 cam gear retards vs. the L36?
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Old 10-05-2007, 02:10 PM   #7
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Quote:
Originally Posted by agrazela
95naSTA, would you happen to know how many degrees the L67 cam gear retards vs. the L36?
I tried digging for it but I couldn't find it.
I remember it being talked about in a 'how far can I take the stock cam n/a' thread.
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Old 10-05-2007, 02:54 PM   #8
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Wow... I wasn't aware of that. Thanks for the save, Mike!

Just for clarification... it'* still the same physical gear, right? Just has the "dot" on a different tooth? Not saying you should use it... just asking.

If you happened to use an L67 timing set it would benefit your top end power and overall peak power, as retarding the cam will shift the peak higher and further toward the upper RPM range. However, it would sacrifice some of your low end torque coming out of the hole.
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Old 10-05-2007, 03:54 PM   #9
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The dot wouldn't change, the keyway for the cam gear would change. It'* easier to offset that way. At least in my little mind....
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Old 10-05-2007, 05:13 PM   #10
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Quote:
Originally Posted by MyLittleBlackBird
The dot wouldn't change, the keyway for the cam gear would change. It'* easier to offset that way. At least in my little mind....
You're right... I was thinking of it backwards.
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