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273-4 vacuum leak
Hello, Thanks for the replies. We found the problem; intake manifold bolts were not torqued. Redid them and no leak! The suggestion to retorque the intake AFTER the two 20-minute initial break-in runs was part of the written instructions from the machine shop (I didn't READ everything...- plycuda
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- Forum: Small Block Mopar Engine
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273-4 vacuum leak
Hello to all. I'm writing to ask advice about a (likely) vacuum leak. I have a '67 Barracuda Convertible with a recently-rebuilt 273-4 Hi-Po (not by me; a local machine shop), .030 over; Hughes did the heads (ported and "larger" SS valves). Compression is estimated at 9.2. Cam was size...- plycuda
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- Forum: Small Block Mopar Engine
