Hooker Competition Headers - 1-3/4 in Primary - 3 in Collector - Black Paint - Big Block Chevy - GM Fullsize SUV / Truck 1969-91 SPORT-M-OFF-F 5 mm Pitch

5 mm Pitch

1976 Chevrolet G10 Beauville CID 400 Naturally Aspirated GAS

The balance of the assembly depends primarily upon the concentricity of the fan clutch with the pump shaft

Fits all current Longacre pyrometers

Fits: GM 1978-'87 Metric Chassis

Hooker Competition Headers - 1-3/4 in Primary - 3 in Collector - Black Paint - Big Block Chevy - GM Fullsize SUV / Truck 1969-91 SPORT-M-OFF-F 5 mm PitchHooker Headers Competition Header 2463HKR Black Finish Tube Size 1. 75 x 31 in. OD Collector Size 3 in. OD Collector Length 8 in. Port Shape Same As Port High Performance Affordable Durable 16 Gauge Material Welds Easier Lasts Longer Heat Cured High Heat Resistant Applications include: Blazer, Blazer K5, Jimmy, K10 Pickup, K15 Pickup, K15 K1500 Pickup, K1500 Pickup, K20 Pickup, K25 Pickup, K25 K2500 Pickup, K30 Pickup, K35 K3500 Pickup, K3500 Pickup,