Thread: '95 LT-1 exhaust maifolds on early style 350

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i was told that someone makes a spacer to adapte the '95 lt-1 exhaust manifolds to an early chevy 350. made of alum. and about 1" thick. anybody ever seen them or know where to get them? thanks

I don't think you need an adaptor. I didn't need an adaptor to run stock 66 manifolds on a LT1

the bolt patteren is the same except the 2 end holes. they are farther apart and the manifold ports are d-shaped where the early 350 is square. is your LT-1 around a 1995? possible that the late model heads have multi bolt hole. if i remember right i had a set of dart iron eagles and they had 2 extra holes front and rear.

Yep, it's a 95 and both the iron heads and the aluminum heads bolt up to the stock manifold. Am using copper gaskets. Why do you want to go with the LT1 manifolds?

You should always check the bolt pattern versus the port locations...take a gasket that fits the head and put it on the head and align the bolt holes. Look to see if you are blocking the ports. Then, take that same gasket and put it on the exhaust manifold or headers.....On some Chevy heads, the old style vs the new style ports are shifted about 3/8"....be especially watchful of the D shaped ports.

They do sell adapters because there are combos that will allow the exhaust manifold to significantly block the ports

i'm building a hobby stock circle track car and i have the manifolds already. rules say no vortec heads.