Competition Cams 11-602-4 BBC Big Mutha Thumpr Camshaft Fits select: 1973-1989 CHEVROLET P30, 1973-1986 CHEVROLET C30

• Great sound (early exhaust opening and more overlap)
• Great power (new lobe designs give great area and air flow)
• Great mid-range response (early intake closing traps more air)
• Minimal engine vacuum - requires mods for any vacuum accessories such as power brakes
• Designed for use only with valve train upgrades including COMP Cams® Beehive™ Valve Springs and roller rockers
• Works best with looser converters, more rear end gear and other performance engine modifications

Fits Select:
1973-1989 CHEVROLET P30 8 Cyl 7.4 L
1973-1986 CHEVROLET C30 8 Cyl 7.4 L
1972 CHEVROLET MONTE CARLO 8 Cyl 6.6 L
1989 CHEVROLET V3500 K3500 8 Cyl 7.4 L
1972-1974 CHEVROLET CORVETTE 8 Cyl 7.4 L
1987-1988 CHEVROLET R30 8 Cyl 7.4 L
1989 CHEVROLET R3500 8 Cyl 7.4 L
1972 CHEVROLET MALIBU 8 Cyl 6.6 L
1973-1974,1976,1978-1979 CHEVROLET C10 8 Cyl 7.4 L
1973-1986 CHEVROLET C20 8 Cyl 7.4 L
1986 CHEVROLET D30 8 Cyl 7.4 L
1973-1975,1981,1983-1985,1987-1989 GMC VALUE VAN P3500 8 Cyl 7.4 L
1984 CHEVROLET K30 MILITARY POSTAL UNIT 8 Cyl 7.4 L
1973-1986 GMC C3500 8 Cyl 7.4 L
1987-1988 CHEVROLET V30 8 Cyl 7.4 L
1972 CHEVROLET IMPALA 8 Cyl 6.6 L
1980-1983,1985 CHEVROLET K30 8 Cyl 7.4 L
1987-1989 GMC R35 CONVENTIONAL 8 Cyl 7.4 L
1972 CHEVROLET CAPRICE 8 Cyl 6.6 L
1973-1976 CHEVROLET CAPRICE CLASSIC 8 Cyl 7.4 L
1977,1980 CHEVROLET BLAZER 8 Cyl 7.4 L
1981-1986 CHEVROLET SUBURBAN C2 8 Cyl 7.4 L
1973-1986 GMC C2500 8 Cyl 7.4 L
1973-1975 CHEVROLET MONTE CARLO 8 Cyl 7.4 L
1981-1986 GMC K3500 8 Cyl 7.4 L
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