Helicoil BBC Exhaust Manifold Smog Holes?
Good morning all,
The smog hole threads on my manifolds are shot. Otherwise the manifolds are in nice shape with the correct dates.
Am I better off sourcing another set for my 1972 454 or finding someone to helicoil all eight holes?
Does anyone know of a reputable mechanic to refer me to? Approximately how much should this job run me?
Or perhaps someone has a set of manifolds 3989310 & 3989343 dated early 1972.
Thanks for your help!
Stan
1972 Chevelle SS 454 Convertible "W" code
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