You do not need a Tack to adjust the idle, for now just get the motor fully warmed up, check that the choke is open and set the idle as low as you can with a soid stable idle with the car in gear .
Then check that you get no off idle stumble and your good for now.
With the Cam it sounds like you have a 750 rpm idle speed should be had in gear no sweat as long as the Carb if functioning normal.
Also if your running a Holley Carb any readjustment of the idle speed will call for a readjustment of the pump arm, and this assumes it was adjusted right in the first place of course!
My money's on a shot U joint in regards to your vibration issue.
__________________
Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs!
And he was not talking about 1/8 or 1/4 mile ETs!
1) 1940s 100% silver 4 cup tea server set.
Two dry rotted 14 x 10 Micky Thompson slicks.
1) un-mailed in gift coupon from a 1972 box of corn flakes.
Two pairs of brown leather flip flops, never seen more then 2 mph.
Education is what your left with once you forget things!
Last edited by steve25; 05-05-2017 at 06:32 AM.
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