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Bolt sizes

Old Jun 20, 2011 | 08:09 AM
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lonesomeloser's Avatar
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Car: 1983 Z28
Engine: 305
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Bolt sizes

Anyone know the 2 different bolt sizes to mount the quadrajet to the intake manifold? Thanks.
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Old Jun 20, 2011 | 10:43 AM
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Re: Bolt sizes

The 2 sizes are: 5/16"-18 on the front, and 5/16"-18 on the rear.

The front ones are long, 4½" or so. The rears are about 1¼". Assuming of course that you're using the stock gaskets for one of these cars, which are most of ½" thick.
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