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OPGI Price: $14.95
Part Type: (P) High Performance, designed to improve performance BB = Big-block engine
Sold As: EACH
2015 Chevelle Catalog Page: 3792016 Chevelle Catalog Page: 389
Scrapes oil from the crankshaft counter weights and throws while its rotating increases both torque and horsepower. When installing these scrapers, you have to fit them to your engine-rotating combination, i.e. because of the difference in stroke length, between a 350 and 400; you have to grind more of the scraper to fit the 400 than the 350. Same thing with a big-block. The scraper sandwiches between the oil pan and the block pan rail. If you're looking for the most power, a crank scraper is worth the time.