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Old 06-02-2005, 07:04 PM
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Default Crane Rockers

Whats the difference between the crane 13757 rocker and the 13767 rocker? I couldn't find anything on their site but I have a box of the 67s.
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Old 06-02-2005, 09:17 PM
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Default Re: Crane Rockers

The 13757 is a 1.6 ratio
The more standard 1.7 ratio is 13763.
Are you sure about the number? I didn't find a 13767 on summits site.
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Old 06-03-2005, 09:02 AM
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Default Re: Crane Rockers

Yes I am sure of the numbers, I couldn't find the 13767 number on the Crane site either.

Mystery solved, the part # has changed to 13763

Last edited by mr_velocity; 06-03-2005 at 09:08 AM.
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Old 06-03-2005, 09:55 AM
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Default Re: Crane Rockers

The 13767's are a new version by crane. They are pre notched to clear the stock valve covers. No need to grind the corners off anymore. I just put a set on my 502MPI. They worked great.
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Old 06-03-2005, 12:26 PM
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Default Re: Crane Rockers

I have a used set if anybody needs them?
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Old 06-03-2005, 01:26 PM
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Default Re: Crane Rockers

Originally Posted by mjb
The 13767's are a new version by crane. They are pre notched to clear the stock valve covers. No need to grind the corners off anymore. I just put a set on my 502MPI. They worked great.
Nothing against you, but I never understood why people would grind on rockers and desturb the integrety of the rocker when a new valve cover for that depth is so cheap. High RPMs on the water , well can you say snap crackle pop...
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Old 06-03-2005, 06:55 PM
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Default Re: Crane Rockers

Thats how they did it from the factory . it just on the back corner . it doesent hurt it .
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Old 06-04-2005, 10:18 AM
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Default Re: Crane Rockers

Originally Posted by mobilecal
Nothing against you, but I never understood why people would grind on rockers and desturb the integrety of the rocker when a new valve cover for that depth is so cheap. High RPMs on the water , well can you say snap crackle pop...
I've never heard of anyone breaking a Crane (or any other brand) rocker arm and attributing the failure on grinding the corner for cover clearance. There must be several thousand motors right from Mercury running with this setup.
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Old 06-04-2005, 11:03 PM
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Smile Re: Crane Rockers

Crazyhorse I agree. If you think of it there are that same many thousand rockers out there w/ an extra 500lbs. over the nose still running today.That radius ground on the rocker causing a problem is like the chance of getting hit w/ a dick in a rainstorm .
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