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I was unable to find that exact number at mortec.com, however if you have a set of 3991492's, they are very possibly a set of 70-up LT1 camel hump heads with 64 cc chambers. These would be valuable heads.
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∙ 12y ago
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What type of Chevy Cylinder-Heads are cast number 3881492?
These should be double hump heads. They are very sought after heads.
What type of Chevy cylinder-heads are cast number 458642?
small block
What type of Chevy cylinder-heads are cast number 8998998?
you can find that type of information at http://www.mortec.com/
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The 4 cylinder has 1 The 6 cylinder has 2
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Yes.
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Not on the head gaskets.
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take out the cylinder head bolts
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The deck is the surface to which you bolt the cylinder heads to.
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In the cylinder heads.
Will Chevy LT1 cylinder heads work on a 350 block?
lt1 is a 350
What side of a big block Chevy is 1 cylinder on?
Number one cylinder for v8 and v6 is always the front cylinder on the head that sticks further out on the front of the engine. The heads are offset on all v6 and v8 engines.
How do you increase the compression ratio of a 1996 Chevy caprice 9c1 police package car?
Change the pistons, or change the cylinder heads, or mill down the cylinder heads.
