DOUG THORLEY Tri-Y 4:2:1 Long Tube Headers, 1-3/4" x 3" (1955-1960 CHEVROLET & GMC 3100 Truck LS)

Header Style: 4:2:1 Long-Tube Tri-Y Headers
Material: Steel
Finish: Silver Ceramic Coated
Weld Up: Yes, adapters must be welded to exhaust system
Primary Tube Diameter: 1-3/4"
Primary Tube Gauge: 14 Gauge
Collector Attachment: 3 Bolt Flange
Collector Diameter: 3"
Tuned: No
Flange Thickness: 3/8"
Bolts and/or Studs Included: Yes
Gaskets Included: Yes
Adapters/Reducers Included: Yes
Y-Pipe (Crossover) Included: No
Motor Mounts Included: No, contact us if you need recommendations
Quantity: Sold as a Pair
CARB E.O. #: N/A
Warranty: Limited Lifetime to original purchaser

1955-60 GM / Chevy 3100 Series Pickups 4.8L-6.2L LS Motor Swap