ARP 4.320 in Bore Tapered Piston Ring Compressor - Billet Aluminum - Black Anodized 29022BK For improved lubrication there is

For improved lubrication there is an extra oil tract machined into the bottom of the housing that delivers oil directly to the cam and distributor gears

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1988-2000 Chevrolet C2500

but we think this should do it

15 x 4 x 9-3/4 in Oval Body

ARP 4.320 in Bore Tapered Piston Ring Compressor - Billet Aluminum - Black Anodized 29022BK For improved lubrication there isProduct Description: Piston Ring Compressor 4. 320 in Bore Tapered Billet Aluminum Black Anodized Sold Individually Since 1968, ARP is the fastener of champions and the world leader in fastener technology.