Re: Valve Timing on 67 Mustang with 289

Posted by 440roadrunner on June 08, 2009 at 11:07:04 from (98.145.76.31):

In Reply to: Valve Timing on 67 Mustang with 289 posted by Buzzman72 on June 08, 2009 at 10:37:18:

I find it tough to believe that an engine that needed an overhaul didn't neet a cam drive. Most later model 289/302's would have had nylon top sprocket

Fords used to be REAL bad for slipping the damper. DEFINATELY make yourself a positive stop out of an old plug, and determine TDC. VERY easy

You install the stop, and gently wrench the engine around until the piston hits the stop, then make a temporary mark under TDC on the timing tab onto the damper. Then rotate the opposite direction until it stops again, and make a second mark under TDC This will give you two temporary marks, and TRUE TDC will be halfway between.

Also, late (ignition) timing or a vacuum leak can cause low vacuum.

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