Heads and Helicoil

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02-04-2005, 05:17 AM

Fastbird93

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Join Date: Mar 2002

Location: Waynesboro, PA

Posts: 4,827

Heads and Helicoil

Has anyone ever helicoiled the header bolt holes??? I know the rocker studs come from the factory helicoiled, and the spark plugs get done on a regular basis, but can the header bolt holes be helicoiled??? And if so, what are the thread specifications/helicoil size???? I've got a set of heads I'm getting ready to play with and a couple of the header bolt holes are in REALLY bad shape.

02-04-2005, 05:32 AM

Dave89IROC

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Join Date: Aug 2002

Location: Melvindale, MI, US

Posts: 4,677

Re: Heads and Helicoil

Quote:

Originally Posted by Fastbird93

should work fine, the thread is 3/8-16

02-04-2005, 07:24 AM

sleepy_z28

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Join Date: Dec 2003

Posts: 223

Re: Heads and Helicoil

I had to have it done to a set of LT1 heads I was selling before they would sell. It was only one bolt hole and my buds at the machine shop took care of it for like 10 bucks.