Doug Thorley Headers THY-346-C Chevy Chevelle 1964-67

Doug Thorley Headers THY-346-C You just finished swapping that LS Motor into your Chevelle.

Why choke it up by running the factory exhaust manifolds that leave much to be desired, and why drag a set of long tube headers on the ground every time the road gets a little bumpy?

This killer set of headers is just a little shorter than true long tube headers.

We designed these to give you the maximum in performance while keeping them short enough so they don’t smack the ground like long tube headers are known for.

Of course the shorter design makes for a bit easier of an installation than long tubes so you definitely don't need to be lowered to run these.

To make these headers last, we made them out of industry leading 14-gauge tubing with 3/8" thick flanges.

Topping all of that off, all of our headers come beautifully ceramic coated to greatly reduce under-hood temperatures and protect them from the environment. 

All of this 100% American made, and backed by our lifetime warranty of course!

Brand: Doug Thorley Headers

Manufacturer's Part Number: THY-346-C 

Part Type: Headers

Product Line: Doug Thorley Headers

Header Style: 4:1 Mid-length 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 for recommendations

Quantity: Sold as a Pair

CARB E.O. #: N/A

Warranty: Limited Lifetime to original purchaser

Quantity:    SOLD AS COMPLETE KIT

WARRANTY:

Doug Thorley Headers carry a lifetime warranty against defects in material and workmanship to the original purchaser. Chrome plated items carry no warranty for finish, other than to be free from defects at the time of purchase, prior to installation. This warranty does not cover damage caused by misuse, abuse, collisions, improper installation, alterations, off-road use, racing use, commercial use, "burn-out" or cracking caused by excessive heat, superchargers, or external heat insulating wrap. Rust or corrosion that occurs after the product is installed is also not covered.