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Old 01-31-2006, 04:28 PM
chianesi's Avatar
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4.3L Vortec

Are all of the 1995 and up 4.3L vortec heads the same. If not, which years or casting numbers can I use on my 95 Blazer.

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Old 01-31-2006, 05:13 PM
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No!!. The only heads that will fit your application have to have the same year/vin no. and casting number.. The 4.3 was undergoing a lot of engineering changes from 92 thru the late ninetys.. More than eight different heads thru the series. Minor differences that range from port shapes, bolt holes, temp senders, rocker arms and stands and studs.. Virtually no interchangability.. CLOSE but not correct.
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