Replacing Header Bolts - Chevy Impala SS Forum
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post #1 of 4 (permalink) Old 06-05-2017, 06:32 AM Thread Starter
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Replacing Header Bolts

So i just ordered a pair of new gaskets for my hooker super comp headers, And im thinking i might as well change out the bolts while im at it... Any bolts you guys recommend? A link would be greatly appreciated! Thanks
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post #2 of 4 (permalink) Old 06-05-2017, 08:34 AM
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Originally Posted by AaronR805 View Post
So i just ordered a pair of new gaskets for my hooker super comp headers, And im thinking i might as well change out the bolts while im at it... Any bolts you guys recommend? A link would be greatly appreciated! Thanks
I would use grade 8 bolts with high temp anti-seize. As for the type of head to use it all depends on the clearance between the header tube. My SLP headers it was easiest to use an allen head bolt. Also on the passenger side you'll need to keep the bolt that attaches the support for the alternator. its a normal bolt to the header flange...but it also has a threaded stub out the top to also attach the support for the alternator. I couldn't find a replacement so I just used a threaded stud with a couple nuts.

I believe 3/8" 16 thread. But you should verify. Also about 1-1/8 or 1-1/4 in length. Compare to your originals (they had spacers too). Don't get too long

I would also shoot for 6 sided bolts versus 12. If you can fit a wrench on it.


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post #3 of 4 (permalink) Old 06-05-2017, 09:09 AM
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These were recommended to me, and I really like them, ARP Stainless Steel Header Bolts, they've got a 5/16 head so it's easy to get a box end wrench on most of them.

I bought a MAC tools extra-long combination, ratcheting box end wrench, open end, for something like $12 bucks.

It was well worth the investment.

Also as a note I bought some 3/8-16 X 1 studs, and used them on the far ends of the head exhaust bolt holes. It made the installation a BREEZE. First hung the header on, and then slid the header on the studs, and started installing the ARP bolts.

This makes it a one man job.

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post #4 of 4 (permalink) Old 06-05-2017, 10:46 AM
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ARP or Stage 8 header bolts

I have had the Stage 8 locking ones for 18 years. You need longer bolt for the rear alt bracket. I bought a SS alan head one at the hardware store

\'96 BBB 383/T-56
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