Dave1980

Hey does anybody know who sells thread chasers locally? (sears hardware)?

Also trying to get the right size with right thread pattern for header bolt hole in head.

I am going to tackle this, this weekend as my exhaust tick is gonna give me away upon inspection. Any help would be great.

OBE1 95Z28

Header bolts are 3/8-16.

mdacton

what do you mean by thread chaser? any auto store should have a Tap and repair kits...whatever you need, pretty sure the headers bolts are 3/8"-16 but take a bolt with you to be sure as always

Do you have a stripped thread or just want to clean them?

Dave1980

Stripped thread, and just bought the 3/8 x 16 tap. (just wanted to double check on the size) I am going to try a thread chaser before tapping, to reduce any unnecessary thread damage.

My # 8 header threads got screwed up right at the entrance, and need a way to fix it. My header got in a bind, and my bolt just turned in place. Luckily it was not too deep in the hole.

OBE1 95Z28

Here's a good link to explain the difference between a thread chasing tap and a thread cutting tap: http://www.carcraft.com/techarticles/thread_chasing/

cehan

Sears sells thread chasers. When I was building my 383 I bought the whole set of internal and external, SAE fine, SAE coarse and Metric for about $50.

Dave1980

Well went to sears, got the chasers 60 bucks for a set (tried to just get one)

The idiot told me they didnt have them, and I made him get it out behind the glass doors.

Anyways it worked, and fixed everything on the exhaust so.....victory is mine!