all SBC 283 302 327 350 * NOTE * Timing cover shown is sold Balancer and double roller timing setup still available 1962 1863 1964 1965 1966 1967 1968 Here is a factory original GM SPH small block chevrolet engine balancers/damper can be very hard to find they were only installed on the special high performance SBC engines L79 Z28 ect 8" by just under 2" thick A must for any period day 2 look Balancer is a assembly line item Dated G6 July 1966 and has the Long bars ribs that go all the way to the outer ring Part # is 3817173 NCRS correct for late '66-69 model year built cars timing mark location change occured in 69 but this balancer design remained the same. a USA made dated 6-71 nos new old stock double roller timing chain with bolts locking tab block washer/spacer All complete cam gear crank gear chain ect. Has plus minus or straight up crank gear option the chain links are stamped USA high quality vintage usa made parts perfect for your hot rod gasser build tri five chevy or anything with a small block chevrolet V8 engine Also comes with new old stock ncrs correct 'LE' (foundry mark top of head bolt) Harmonic balancer crank snout bolt and new fat washer Free shipping anywhere in the usa or canada