Low Cost Claimer Engine Mods Four Bolt Main Cap
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One of the few rules in these classes is that you must run a stock block. Original four-bolt blocks are getting pretty scarce, so JR Motorsports sells a four-bolt main cap set that is easily fitted to a block with two-bolt caps. Minimal machine work is required on the block, and Kent Davenport of JR Motorsports says that almost any competent machine shop can do the work for you. Photo courtesy of JR Motorsports View Related Article
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