Re: 73-87 Dynomax 85003 headers + driveshaft interference?
i had that issue in my '84 and was able to solve it by rotating the flange. of course that was also after replacing my front drive shaft because it had too much slop in the slip joint.
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"Horsepower is how fast you hit the wall, torque is how far you carry the wall with you."
'84 chevy half ton short box 2wd, 67,000 actual miles 
'03 chevy 1500 HD crew cab 4x4 standard box, 6.0L
 
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