Tri-Y Headers for Chevy Truck SBC 63-87 1-5/8in Primary Black Coated D300Y-B Promoted This throttle body is also

This throttle body is also supported in Holley EFI V5 software as a default dropdown selection

1993-1996 4L60E w/30 spline input and 1997-04 Corvette transmissions

GMC G35/G3500 Van (1974)

1977-1978 Chevrolet C20 305 CID

Tri-Y Headers for Chevy Truck SBC 63-87 1-5/8in Primary Black Coated D300Y-B Promoted This throttle body is alsoOverview: 63 91 GM Truck SBC Tri Y Black Ctd Doug's is the pioneering force behind the popular TRI Y design for cars and trucks. The unique, shortend, paired primary tubes increase mid range torque without sacrificing top end power. TRI Y's are a great choice for daily drivers and heavy duty trucks looking to increase power from idle up to 4500 RPM while maintaining maximum fuel efficiency. Features: 3 8" thick machined flanges to prevent warping CNC