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3 V8 2000 - 2010 GMC Yukon XL 2500 364/6 V8 2001 - 2006 GMC Yukon XL 2500 496/8
33=Jet Size
7 V8 1987 - 1996 Chevrolet Camaro 350/5
4 V8 1979 Chevrolet El Camino Royal Knight 267/4
Chevy SB/BB Tall Block Cam Sync Plug - 85142 charging-and-starting-systems 3 V8 2000 - 2010Overview: MSD's cam sync plugs are the perfect solution when running an aftermarket sequential EFI system with coil per cylinder ignition. The cam sync plug installs in place of a traditional distributor, providing a hall effect cam sync signal needed for the EFI system to reference the # 1 cylinder. MSD's cam sync is a plug and play with Holley EFI systems and can easily interface with most aftermarket EFI systems. The cam sync plug will have 2 3 4"
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