When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Price: $299.00
Brand new Thornton design for that factory fit big block Oldsmoible tubular header.
Sold with a pair with gaskets. 3/8\" x 1\" bolts with washer are required but not included.
Headers are made of stainless and weigh 12 pounds. Stock cast iron exhaust manifolds weigh 42 pounds.These headers are fitted to replace your factory exhaust manifolds with tubular headers with no modifications needed. There are no issues with clearance with the starter, frame, Z-bar, dip stick, steering shaft, etc. All accessories will fit without modifications; all air conditioning, power steering, alternator brackets all attach to the engine as original. We have test fitted to 1966 and 1970 442s with no issues.
Flanges on headers are loose so they can be positioned at the best location for your application.
Made of stainless steel 409 and coated in a high temp paint.
These headers will only fit big block Oldsmobiles with 455, 425 & 400 engine from 1965 to 1976 and will fit all Oldsmobile powered cars as long as the steering box is mounted foward on the frame and not back toward the firewall like in the 1965-1970 B&C body cars such as Dynamic 88, Starfire, Delta 98 and Toronado.
These headers will fit all A body cars plus the G body cars equipped with big block Oldsmobile.
The exhaust outlet is best fitted to 2 1/2\" head pipes with factory style flair and will fit 2 1/4\" standard head pipes. Flowmaster and Pypes exhaust will fit perfect with their standard down pipe for the 455 Oldsmobile.
Special torque sequence is needed.....do not tighten top center bolt until the other 4 bolts are tight.
We are currently working on small block Oldsmobile tubular headers in our next coming project to be released January 2018. Same idea as big block manifolds made to replace stock manifolds with tubular headers.
Please feel free to ask questions before purchasing. We stand behind all of our parts we sell on eBay so returns are not a problem. Your satisfaction is guaranteed!
SMALL BLOCK HEADERS ARE IN STOCK!!! LOOK FOR OUR LISTING ON EBAY
Thornton Muscle Cars832 Mine RdQuakertown, PA 18951