I decided to replace the lower choke tube on my 1960, base 283/230. I removed the RH exhaust manifold and can see what appears to be like a small insert with about a 1/16" hole. I measured the hole where the upper choke tube inserts and it's .250" diameter. The new lower choke tube that I bought from Paragon p/n 4003 is for 57-65 Corvettes and is larger than the hole in exhaust manifold. My manifold appears to be correct with GM p/n 3750556. I included some photos of the top manifold hole and also the best that could get of the inside. Also attached is a sketch of the Paragon tube with dimensions. I've read the archives which mention inserting the new tube from the top and tap it in carefully. But, the new tube is quite bit larger in diameter than the hole in the manifold. Am I supposed to drill out the hole to make it larger or did I get the wrong replacement tube or is there something else I'm not aware of?
Any help is appreciated.
Pete
20800100_4443.jpg100_4452.jpg100_4436.jpgParagon Tube Dimensions.JPG
Any help is appreciated.
Pete
20800100_4443.jpg100_4452.jpg100_4436.jpgParagon Tube Dimensions.JPG
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