The Ford Barn

29FordRoadster · 02-06-2019, 10:50 AM

Will somone please tell me the valve clearances for a Cragar head on a Model A engine.

briphaeton · 02-06-2019, 11:29 AM

Depends on your cam grinders recommendation.

Jim Brierley · 02-06-2019, 12:27 PM

Clearance is determined by the cam being used. If you think it has a stock cam, set them at .014" intake and .016" exhaust. If the head has it's original rocker arms, they are 1.25:1 ratio, so valve clearance is 1.25 times stock settings. You could also check the present clearances and assume they are close to what they should be, and adjust any that are far off. Now might be a good time to re-torque the head.

29FordRoadster · 02-06-2019, 04:02 PM

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Thank you briphaeton and Mr. Brierly for the information. Your quick responses are much appreciated.

02-06-2019, 10:50 AM	#1
29FordRoadster Member Join Date: May 2010 Location: Martinsville, Indiana Posts: 44	Valve clearances for Cragar Head Will somone please tell me the valve clearances for a Cragar head on a Model A engine.

02-06-2019, 11:29 AM	#2
briphaeton Senior Member Join Date: Jan 2012 Posts: 241	Re: Valve clearances for Cragar Head Depends on your cam grinders recommendation.

02-06-2019, 12:27 PM	#3
Jim Brierley Senior Member Join Date: Jun 2010 Location: Temecula, CA Posts: 4,091	Re: Valve clearances for Cragar Head Clearance is determined by the cam being used. If you think it has a stock cam, set them at .014" intake and .016" exhaust. If the head has it's original rocker arms, they are 1.25:1 ratio, so valve clearance is 1.25 times stock settings. You could also check the present clearances and assume they are close to what they should be, and adjust any that are far off. Now might be a good time to re-torque the head.

02-06-2019, 04:02 PM	#4
29FordRoadster Member Join Date: May 2010 Location: Martinsville, Indiana Posts: 44	Re: Valve clearances for Cragar Head Sponsored Links (Register now to hide all advertisements) Thank you briphaeton and Mr. Brierly for the information. Your quick responses are much appreciated.