1972 Chevy Nova Weiand 142 Blower Upgrade - Boost Machine
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We then removed the distributor and the manifold, and to our surprise we discovered a completely polished lifter valley, screened drain-backs, and larger 3/8-tapered pushrods with machined lifter bores. We also learned that the heads had been massaged a bit too, which was and added bonus. View Related Article
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