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Discussion Starter · #1 ·
My customers have a 1969 Chevelle with a chevy 350 engine. My customers is pretty sure the engine is out of an early 70's truck, but the block is apparently the same. My customers need to know what gap my customers should put for the sparkplugs Launch X431 V Update, and my customers is running an HEI distributor and a hitatchi mini starter if that matters. Plugs are Autolite 85 (with nascar performance). Thanks for your time
 
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