Head Bolt ID (What is a KXV Bolt) ???

[Twil]

After pulling the valve covers and checking around the head near the exhaust, I noticed that my head bolts have "KXV" on the center. I was going to install a set of ARP later (which I know have ARP on them), but what are "KXV" ?? I believe the stock head bolts are marked "SPS". So I don't believe these are stock.

Anyone have a clue?


Thanks,
Brandon

 

[Topjimmy]

Hummmm...My head bolts are marked SPS too on my "mystery LC2". Can anyone confirm the stock bolt markings?

TIA - Jimmy

 

[TurboDave]

Originally posted by Topjimmy
Hummmm...My head bolts are marked SPS too on my "mystery LC2". Can anyone confirm the stock bolt markings?

TIA - Jimmy

SPS are the stock torque to yield head bolts. SPS are also used on the rods (very high quaility rod bolts).

 

[Twil]

Any one have an idea on these "KXV" markings??

Brandon

 

[turbofish38]

They may be stock TTY bolts. Not all bolts have the SPS markings. Have you pulled one off to see if it looks like a TTY style bolt? If I'm not mistaken those are manufacturers ID markings.