2KThunder

iTrader: (4)

Does anyone know where to find an 11X2.00 thread tap for a blocks head bolts? Ive tried everywhere. No one can help. Anyone!!!! I mean its got to be out there how many engines use this size headbolt! Thanks

c0rey

not sure where you are at in houston but try tommy tools they have alot of taps

http://www.google.com/search?q=tommy...en-US:official

Camaroholic

iTrader: (1)

Looks like ARP has a thread chaser:

https://ls1tech.com/forums/4973968-post.html

I was surprised... even McMaster-Carr doesn't show any M11x2.0 taps of any flavor. And they have EVERYTHING.

Black Plague

iTrader: (13)

Got my kit from http://www.threadkits.com/ Part # J42385-100. And it cost 380.00 new! It's a GEN 3 M11-2.0 head bolt kit and I just used one helicoil with nine left. If you want I will sell it to you for 300 plus shipping. Let me know.

2KThunder

iTrader: (4)

Yeah ive got the arp chaser. I just cant belive that no one has it. Ive got a GM SPO part number for a kent moore tool that is made for extracting broken head bolts and im gonna take a look at that one you posted Plague, thanks, thats just WAY to much, id rather buy a new block lol

Beast96Z

iTrader: (21)

The LS1 threads are "rolled". That's why ARP is the only one making it. If you use any other chaser in the head bolt holes, you will remove the rolled material and weaken your threads.

eallanboggs

iTrader: (1)

Rolled meaning the face of the thread is rounded? This has to require a special tap. I'll have to take a closer look at the threads on a set of new head bolt I have in my garage. What is the advantage of a rolled thread. That's a new one on me.

2KThunder

iTrader: (4)

Its something to do with how they are created, one is done by cutting the other is rolled through a die or something, the later tends to be cheaper

AmericanMuscle313

iTrader: (5)

Are you just cleaning the threads in the block or repairing threads? I made my own thread cleaning tool by cutting to grooves into an old head bolt on the bench grinder. What do you guys think ? I can post pics next week.