Flowtech Long Tube Headers, Chevy BB 396-454, Black Proportioning Valves and Accessories All necessary hardware is included

All necessary hardware is included for installation on Holley 4150 and 4160 carburetors with a 5

Will not work on aftermarket trailing arm cross members

Transmission control suitable for 4L60

When replacing your rear coil springs it is a very good idea to check your coil spring retainers on your 1960-72 Chevy and GMC truck that has rear coil springs

Can be used for both power or manual brake applications

Flowtech Long Tube Headers, Chevy BB 396-454, Black Proportioning Valves and Accessories All necessary hardware is includedFlowtech headers are the perfect combination of performance and value. Flowtech long tube headers are precision engineered using mandrel bent tubing, formed collectors and 5 16" flanges with sealing rings for a leak free seal. All mounting hardware and gaskets are included for a simple installation. This header is coated in a high heat resistant black paint for a stealthy appearance. Collerctor Dia: 3. 50" Port Shape: Round Primary Tube Dia: 1. 875"