New alternative to ARP head bolts/studs???
Staging Lane
Joined: Oct 2021
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Reviving an old thread because I haven’t been able to find an answer.
When did Summit head bolts change over to TTY? Reading the thread sounded like a better option than OEM, but I see they are now TTY.
Anyone know?
When did Summit head bolts change over to TTY? Reading the thread sounded like a better option than OEM, but I see they are now TTY.
Anyone know?
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
It appears the Summit branded bolts ARE all TTY. 2 numbers for early or late configuration.
They still have normal torque spec bolts, but they're ARP, which is the best alternative.
They also have FelPro which don't say whether they're TTY or not.
The TTY bolts are likely private branded OEM style bolts, likely priced under GM for those desiring TTY bolts at a discount.
They still have normal torque spec bolts, but they're ARP, which is the best alternative.
They also have FelPro which don't say whether they're TTY or not.
The TTY bolts are likely private branded OEM style bolts, likely priced under GM for those desiring TTY bolts at a discount.
Last edited by G Atsma; May 18, 2024 at 10:57 AM.
Staging Lane
Joined: Oct 2021
Posts: 93
Likes: 48
Staging Lane
Joined: Oct 2021
Posts: 93
Likes: 48
Yeah. I’ve searched on their site and also used the Part # from the catalog. All they have listed under Summit brand are TTY. I didn't know if they updated the part # or just stopped selling them altogether.
TECH Senior Member
Joined: Jun 2016
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From: Central Cal.
1) quit making them,
2) went outta bizz,
3) got pissed at Summit for whatever, (or vice-versa), or
4) they weren't selling well and Summit dropped them.
Joined: Apr 2006
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Staging Lane
Joined: Oct 2021
Posts: 93
Likes: 48
Thanks for bringing this to our attention. This is a catalog error. The SUM-910210 and SUM-910211 LS head bolts are TTY bolts as seen on summitracing.com. We don't have Chromoly head bolts for the LS engines in our own private brand. We're getting this submitted to our catalog department for correction in future catalogs.
Are there any plans to produce a competitive head bolt comparable or better than your competitor?
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