joseph Posted February 23, 2016 Share Posted February 23, 2016 what is the width of the ex. manifolds where the bolts go through ? 5/8 ?. i had mine machined and they are too thin. i am looking for a set of exhaust manifolds gm 3909879 and 3916178 mine were date coded a 26 70. i contatced leo about a used set. thanks joe Quote Link to comment Share on other sites More sharing options...
wallaby Posted May 5, 2016 Share Posted May 5, 2016 Yes, the thickness of the ears is 5/8 where the bolts go through. How much had to be removed to get them flat? Can you maybe use a shorter bolt? I'm thinking a flat manifold is better than a used one that isn't. Quote Link to comment Share on other sites More sharing options...
LS5 Posted May 8, 2016 Share Posted May 8, 2016 Hey Joe you can also try Jared Richey as well for manifolds on our site...... Mark........ Nice to see you posting again.... Darren. Quote Link to comment Share on other sites More sharing options...
joseph Posted May 13, 2016 Author Share Posted May 13, 2016 thank you ls5. i sent jared a message. Quote Link to comment Share on other sites More sharing options...
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