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Big Block Header bolts/Fasteners?

954 Views 7 Replies 5 Participants Last post by  JeffK
Some of my threads don't look so good on my Brodix RR's. I have the Arp header bolts but I had to clean out the threads and now the bolts are not a completely snug fit. Heads are already on the new block. I looked on summit but can't figure out which ones I need that actually spread like a Poly lock to help tighten the header bolt. Can anyone help me with a part number for this from summit or jegs. Not just regular header bolts. I already have those.

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Thanks. I am ordering now. I guess it won't say big block chevy. I just need the 3/8 by 3/4 inch.
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