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Author Topic: Exhaust Manifold Bolts  (Read 11020 times)

Offline VileZambonie

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Re: Exhaust Manifold Bolts
« Reply #15 on: February 16, 2018, 07:01:11 pm »
pipe thread
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74 GMC, 75 K5, 84 GMC, 85 K20, 86 k20, 79 K10

Offline Jon87V20

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Re: Exhaust Manifold Bolts
« Reply #16 on: February 16, 2018, 08:26:30 pm »
I was able to get the old one out of the old manifold after all. A torch, a wrench, and a mallet.  ;) I believe it's a 7/8" in case anyone else needs to know. Still not sure on the thread pitch though.
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1987 Chevrolet Suburban V20 Silverado
350ci TBI TH400 NP208

Offline Jon87V20

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Re: Exhaust Manifold Bolts
« Reply #17 on: February 24, 2018, 06:16:09 pm »
So I found out that bolt is 7/8"-18 in case any one else is ever looking for one. I ended up buying a oil drain plug for a '71 Jeep CJ5. The Dorman part number is 65231.
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1987 Chevrolet Suburban V20 Silverado
350ci TBI TH400 NP208
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