Helicoil BBC Exhaust Manifold Smog Holes?

03-14-2007, 04:49 PM

Stan Kryla Stan Kryla is offline

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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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1972 Chevelle SS454 Convertible
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1972 Olds 442 496 / M22Z Convertible
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