C3 Tech/Performance V8 Technical Info, Internal Engine, External Engine, Basic Tech and Maintenance for the C3 Corvette
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Old Feb 3, 2005 | 12:53 PM
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Default smog system

Are the smog systems the same on a 69 big and small block?
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Old Feb 3, 2005 | 02:06 PM
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Nope. And the big block system will cost you somewhat more to replace than the small block. The major differences are the diverter valve (hard to find), the brackets, and the injection tubing. Also, the small block has a spacer behind the pulley that the BB doesn't have. Both use the hard-to-find and not-reproduced white fan. There are also differences between the various versions of the big block. A complete big block system can run you upwards of $2K.
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Last edited by JB; Feb 3, 2005 at 02:08 PM.
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