EX41110 ‘68-’76 RWD Cadillac Headers

Mid length headers for ‘68-’76 RWD Cadillac (All exc. Seville).
Specifically designed for ’68-’76 Coupe Deville, Sedan Deville, Concourse, Calais, and Fleetwood cars.

On ’68-’70 model cars, you may or may not have to trim or remove the sheet metal shields over the upper control arms.
You will also have to relocate the brake proportioning valve to the top of the frame rail, if it is mounted to the inside of the frame rail. This does not require breaking the seal on the brake lines – they can be easily tweaked while connected, if you are careful. Many folks leave it where it is, and we’ve received no reports of this causing a problem.

Can also be used in ’64-’67 RWD Cadillacs with a 472, 500, or 425 CID swap, but often requires minor modification.
Also used for most RWD / rear-steer* swaps, such as ’72-older Fords, some 50s Oldsmobiles, etc. 

*”Rear-Steer” refers to the steering linkage being behind the wheel centerline, rather than in front of it.

Easy fit, no hammer required – properly designed to fit the application and perform great.

These headers are manufactured using fully CNC mandrel bent thick wall aluminized tubing, TiG welded in a fixture, with 3/8 flanges, that are machined flat after welding for a reliable seal.

They are a mid-length design, designed for optimum performance from stock to performance builds. Higher end builds (over 500 real HP) may benefit from larger tube headers, but the 1 3/4″ headers perform well in most street combinations well into the mid-600-HP range.

Note: Headers are designed to fit listed applications with no further modification, assuming the engine is mounted in the factory location (for cars originally equipped with a 472 or 500 engine) or the location we mount them (for cars originally equipped with a 429 engine). Different installations may require custom fitting.

Note: Standard header flanges, factory heads, and Bulldog / MTS heads all use the ‘standard’ exhaust bolt pattern (2 bolts per exhaust port). If you have any of these heads, you want headers with the ‘standard’ header flange. BoogieMan flange headers only fit BoogieMan heads. They have 3 bolt holes per exhaust port. Early BoogieMan heads only have the BoogieMan pattern (3 bolt holes per port), later BoogieMan heads have both patterns (5 bolt holes per port), and can use either style of header flange.

Available options:
EX41111 – 1 3/4″ uncoated, standard flange
EX41111-S – 1 3/4″ silver ceramic coated, standard flange
EX41111-B – 1 3/4″ black ceramic coated, standard flange
EX41113 – 1 3/4″ uncoated, BoogieMan flange
EX41113-S – 1 3/4″ silver ceramic coated, BoogieMan flange
EX41113-B – 1 3/4″ black ceramic coated, BoogieMan flange