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Old 01-30-2014, 10:56 AM
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Lee Lee is offline
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Join Date: Dec 1999
Location: Crosby, TX (East of Houston)/Texas/USA
Posts: 2,108
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Quote:
Originally Posted by 67gtospud View Post
Do I need a crankshaft socket to hold the degree wheel on or will the crank bolt suffice?
You CAN use the crankbolt, but the crankshaft socket makes it SOOOOO much easier/faster/accurate.

Many years ago, I got the basic CompCam "kit", with the small diameter wheel. I used the crankbolt, and made it work. Sometimes if I tried to turn the engine CCW instead of CW, the bolt would loosen, which made the wheel move - had to go back and re-zero the wheel. It is also hard to get the wheel PERFECTLY centered, as the hole is bigger than the bolt.

I modified the wheel, cutting holes that would allow me to bolt the wheel to the damper. That made the wheel lock in place more solidly, but then the crank bolt was just partially threaded in, and you still can't go CCW.

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'73 T/A (sold). Low budget stock headed 8.3:1 455, 222/242 116lsa .443/.435 cam. FAST Sportsman EFI, 317rwhp/385rwtq on 87 octane. 13.12 @103.2, 1.91 60'.

'67 Firebird [sold], ; 11.27 @ 119.61, 7.167 @ 96.07, with UD 280/280 (108LSA/ 109 ICL)solid cam. [1.537, 7.233 @93.61, 11.46 @ 115.4 w/ old UD 288/296 108 hydraulic cam] Feb '05 HPP, home-ported "16" D-ports, dished pistons (pump gas only), 3.42 gears, 275/60 DR's, 750DP, T2, full exhaust