1977-1990 B-Body Crossmember RCB3-400 valve-covers 6L V8 1963 - 1969

6L V8 1963 - 1969 Chevrolet Bel Air   427/7L V8 1971 - 1972 Chevrolet Kingswood   402/6

this direct-fit catalytic converter also interchanges with OE parts 25052-20190 and 25052-20220

5 Thread Size 1/2"-20 Warning California Proposition 65 Warranty Limited 90 Day Weight 0

Black Fuel Gauge 0-90

Weiand has taken this technology and designed a new line of Track Warrior manifolds perfect for aggressive street machines and Comp/Super class big block power plants

1977-1990 B-Body Crossmember RCB3-400 valve-covers 6L V8 1963 - 1969Fits Models: Caprice, Impala, LeSabre, Oldsmobile 88, Bonneville, Parisienne, Catalina Fits Years: 77 90 Fits Transmissions: TH400 Short Tail, 2004R, 700R4 with B Body tailshaft Mount For Classic B Body builders, we've designed a direct bolt in transmission crossmember to accommodate both a 2004R or TH400 short tail transmissions, as well as a 700R4 with the tailshaft transmission mount. One crossmember, both transmissions! We accommodate both by