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4 V8 1976 - 1978 GMC C35 400/6
7 V8 1979 - 1986 GMC G3500 Rally 350/5
Max increases of up to 9 hp and 10 lb-ft over the stock exhaust at the rear wheels
Designed to work with Sniper EFI – Plug and Play
1983-1984 GMC S15 122 CID
Earls O.E. Fuel Line EFI Quick Connect - 751166ERL modern-day-muffler 4 V8 1976 - 1978Overview: The Earl's Vapor Guard product line has been expanded to include O. E. fuel line quick connect fittings. These adapter fittings allow an easy way to re use existing OEM fuel rails, fuel filters, and other components when doing an engines swap, or upgrading to Vapor Guard (or other AN Plumbing). Each fitting has a 6 AN Male Flare, and a metal retainer nut for a secure leak free connection to the 5 16" or 3 8" SAE style fuel tube. Constructed
