C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

Those w/ TPIS Headers

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Old Mar 10, 2003 | 02:07 PM
  #1  
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Default Those w/ TPIS Headers

Which header bolts are you guys using?

I have the stage 8 locking but they are much to short for the TPIS headers
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Old Mar 10, 2003 | 03:05 PM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

Stock bolts. You can go to any hardware store and get new Grade bolts.
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Old Mar 10, 2003 | 03:24 PM
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Default Re: Those w/ TPIS Headers (VetteNoob)

I was hoping to use the locking bolts, but it looks like there arn't any options besides the stock length...

I guess I will be making sure they are tight every so often
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Old Mar 10, 2003 | 03:29 PM
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Default Re: Those w/ TPIS Headers (VetteNoob)

Used stock bolts.... :yesnod: :chevy
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Old Mar 10, 2003 | 05:21 PM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

I haven't installed mine yet, but doesn't ARP make header bolts for this application?
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Old Mar 10, 2003 | 05:32 PM
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Default Re: Those w/ TPIS Headers (cprgmr)

stock bolts here. They work just fine...make sure you re torque them after a heat cycle.
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Old Mar 10, 2003 | 06:04 PM
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Default Re: Those w/ TPIS Headers (AS84)

I went to a local bolt distributer with my stock bolts and purchased allen socket bolts of the same grade and length. I did not like the clearance between the bolt heads and headers on cylinders 3 through 6. Now I can torque them properly without worrying about stripping them.


[Modified by 85vet, 6:05 PM 3/10/2003]
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Old Mar 10, 2003 | 08:04 PM
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Default Re: Those w/ TPIS Headers (85vet)

Stock bolts here :yesnod:
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Old Mar 10, 2003 | 11:37 PM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

I also used the stock bolts with no problems. A couple of them on the right bank were a little snug against the header tubes but all in all the stock bolts will get the job done.
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Old Mar 11, 2003 | 07:59 AM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

I use ARP (12 point).
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Old Mar 11, 2003 | 09:10 AM
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Default Re: Those w/ TPIS Headers (85vet)

I went to a local bolt distributer with my stock bolts and purchased allen socket bolts of the same grade and length.
I think i am going to try to do the same. The clearance on the tube for cylinder 8 is tight, not to mention getting a socket back there!!
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Old Mar 11, 2003 | 01:31 PM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

Stock bolts. :thumbs:
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Old Mar 11, 2003 | 05:40 PM
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Default Re: Those w/ TPIS Headers (Dominic Sorresso)

Stock bolts. :thumbs:

ME TOO :thumbs:
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Old Mar 11, 2003 | 08:12 PM
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Default Re: Those w/ TPIS Headers (Ruby6spd)

After "modifying" box wrenches etc., I finally came across the 1" ARP SS header flange bolts with a smaller hex head. These allowed me to use the thick Cometic gaskets. You can use a 1/4" drive socket set and not have to either "modify" your new headers, or fight with the last bolt on #8. What a B*&^% getting that from underneath after removing the "K" member, and turning it one flat at a time with a bastardized box wrench. As far as 12 points on an L98, forget it! It can be done, but what a MAJOR PITA on some of them.
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