Edelbrock Part # 7075 Victor Ram 2-R is a tunnel ram base designed for 396-502 C.I.D. Chevrolet V8 engines in racing applications using high performance rectangular-port cylinder heads. Suitable for boat and drag racing. Operates from 4000-7000 rpm with the standard-flange top and above 7000 rpm with the dual 4500 top. Will fit Edelbrock Victor series race heads #77409, #77459 and #77609. Two tops are available, PN 7078 for two in-line, standard-flange carburetors, and PN 7079 for two sideways mounted, 4500 series carburetors.