Quote:
Originally Posted by WVZR-1
Jeff - on your '91 there's a 3-bolt gasket on the right GM # 10147973 and the left is a ball/socket if your exhaust is stock. I have no idea if an off the shelf three bolt gasket from anyone is a match for it. I can look in the AM and see if I have a flange and measure for you to compare. I'm not near them this evening.
I've never compared an early "heat-riser" gasket but it might be a try. I don't recall if it was 3 equally spaced bolts or 2 + 1. There was an F-body flange that didn't have equal spacing but was 3 bolt also.
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Thanks Dave. Too me it just looks like a conventional flange gaskets on the right side and a donut style gasket on the left. It seems when the exhaust is dropped for any reason that the gaskets would need to be replaced.