The attached photo is of a V-6 manifold I bought "loose" and modified by relocating the outlet -- I need to know what it is from so I can buy the correct flange gasket "donut" -- Note that it is from the era of air injection (they were cut off and plugged) and fits a 4.3L v-6 Chevy perfectly -- I believe the right gasket would be of the "donut with sleeve type"
I could not find a part number and you are correct, it is a low nickel steel similar to that used for boiler tubing. Astro sounds promising, any guess as to the year? What years did GM use Air Injection into the exhaust manifolds ?
Not off an S-10 but looks as if it would fit one. Looks to be aftermarket (Edelbrock TES maybe) and looks like it takes a flat gasket that fits certain converters. There's only two sizes. Probably had a 2 1/2" two piece Y-pipe that went with it.
I'd like to again thank everyone for there help and close this post with what I have learned in case it might help someone else :
1) I still do not know what vehicle used this manifold
2) A gasket that fits is the Fel Pro 61014 used on a number of late 90's GM vehicles --I plan to remember it as a 2000 Escalade part
3) Please note that although it looks the same, the bole pattern on the manifold flanges is not compatible with most earlier GM flanges -- Apparently these are about a 3/16" smaller bolt circle diameter than say S-10 from 1994
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