Where to get 1985 Corvette plenum hex bolts
 

After some exquisitely tight torx bolts I went to lose they don't have replacements anybody know of a good place to go for the hex ends I don't want torx

Any large hardware store will carry hex or Allen head bolts in both metric and sae.

well I'm my woman works at Lowe's she took him to work and the guy said he don't have them so I'm going to try the competitor or maybe Ace

Are you familiar with "small pattern 12 point " cap screws? They install with standard 12 point socket wrenches, and are much stronger than Torx hd.
https://www.fastenal.com/product/fas...sExpanded=true
or:
https://www.grainger.com/search/fast...int+bolt&sst=1
or:
https://www.jegs.com/i/Moroso/710/38400/10002/-1
or:
https://www.jegs.com/i/JEGS/555/83250/10002/-1

:cool:

ACE H/W has supplied many fasteners for all my Vettes. Also, an incredible source of "everything", check out McMaster-Carr

Are you only wanting to do 'tube to plenum' or actually 'ALL' including intake base to cylinder-head? I like HRR's suggestion of 12pt and they also have a flange-head. You'll NOT find what you want on a retail shelf mass merchandiser but knowing specifications I'd think an easy buy. You might need to do a few pieces to get appropriate lengths but I'd say doable.

You would need a mix of 3/8-16 (to cylinder-head) and M8x1.25 (for tubes)

arp sells the complete upper and lower intake, TPI sets (34 bolts total) in either stainless or chromoly black oxide, 6 or 12 point - try https://www.summitracing.com/search/...rder=Ascending - no hands on experience, and i'm assuming the uppers are metric, and the lowers fractional. a little research may be needed. then again, thought I answered this....

https://cimg3.ibsrv.net/gimg/www.cor...6d03acb362.jpg