Cam lobe seperation

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September 17th, 2018, 03:54 PM

crank shaft

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Cam lobe seperation

Does anyone have any advice on motor mounts. I have a 1970 supreme with a 108 cam lobe seperation. I love the cam but the engine lobe so much it shakes the car. Anyone have any idea on how I can take this beast down?

September 17th, 2018, 05:04 PM

RandyS

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Increase the idle RPM a bit.

September 17th, 2018, 05:05 PM

crank shaft

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Quote:

Originally Posted by RandyS

Increase the idle RPM a bit.

Ill try that. Thanks

September 17th, 2018, 06:28 PM

bw1339

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Manifold vac advance could help too.

September 17th, 2018, 07:06 PM

crank shaft

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Quote:

Originally Posted by bw1339

Manifold vac advance could help too.

How much should I push it? Set a 12 degrees now

September 18th, 2018, 09:06 AM

Fun71

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12º is good, just be sure to use a manifold vacuum source so that you have that full 12º at idle.

September 18th, 2018, 05:03 PM

crank shaft

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Quote:

Originally Posted by crank shaft

How much should I push it? Set a 12 degrees now

The guy that did my Dyno tune told me not to run vacuum advance. I should ask him why. I know he had the distributer out and put it on the distributer machine.

September 18th, 2018, 11:19 PM

BangScreech4-4-2

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Quote:

Originally Posted by crank shaft

The guy that did my Dyno tune told me not to run vacuum advance. I should ask him why.

I'll take a whack at this one -- because he doesn't know how to set up the distributor to run properly with the vacuum advance intact? I'll go with my answer, but if you do ask him, be sure to also ask why the factory put it there in the first place.