About the Registry - BOSS 302
Oct 14, 2023 · They became good friends and the BOSS owner was Randy's best man at his wedding. Randy met Todd Eby at about the same time. Todd had a 1970 Candy Apple red BOSS 302 that he bought from the original owner. Randy was fascinated by his car too so when a 1969 BOSS 302 came up for sale in 1981, he bought it. The Shelby Registry had just been published.
Carburetor Identification - BOSS 302
Sep 19, 2024 · The BOSS 302 carburetor is a Holley Model 4150-C 4-V. It flows 780 cubic feet per minute (CFM) and is one of the largest flowing carburetors Ford ever put into production. The 1969 Ford part number is C9ZF-9510-J. The 1970 part number is D0ZF-9510-Z.
Heads - BOSS 302
The BOSS 302 heads used some of the biggest valves in the industry. 1969 Intake - 2.23 inches Exhaust - 1.72 inches. 1970 Intake - 2.19 inches Exhaust - 1.72 inches. Said to be "overvalved" for street performance. Above you see a casting with a D1ZE part number. Parts made from tooling for the cancelled 1971 BOSS 302 were used for service.
Intake Manifold - BOSS 302
The BOSS 302 was planned for 1971 but cancelled just before production began. Most of the tooling for the 1971 parts was complete so 1971 parts were produced and used for later service parts. They turn up occasionally like this intake manifold with part number "D1ZE9424-EA".
The BOSS 302 Story
The BOSS 302 was offered in the 1969 and 1970 Mercury Cougar Eliminator as well. The Eliminator was also styled by Larry Shinoda. Ford came close but did not win the Trans-Am title for 1969 with the BOSS 302 Mustang. The BOSS 302 Mustang did win the Trans-Am championship in 1970 and entered the history books. *Note: this is the abridged story.
Distributor Identification - BOSS 302
The BOSS 302 distributor for both 1969 and 1970 is a dual point, vacuum advance, vacuum retard design. It carries part number C9ZF-12127-E. The 1971 BOSS 302 part number is D1ZF-12127-AA. We are seeing distributors from other Ford applications modified to look like (fake) BOSS 302 distributors for sale. Here's how to spot the imposters:
The BOSS 302 Registry
Welcome to the BOSS 302 Registry. A showcase and resource for the proud members of the registry and aficionados for one of Ford Motor Company's classic automobiles: The BOSS 302 Mustang. Online since October 7, 1998.
FAQS/Facts - BOSS 302
A2: According to Donald Farr's book, Mustang BOSS 302, Ford's Trans-Am Pony Car, "In 1969, BOSS 302 engines received a 299-S engine code in the lower right hand corner of the engine identification (sic) tag. In 1970, the engine code was either 299-B (standard BOSS 302 engine) or 300-B (BOSS 302 engine with oil cooler).
Buying a BOSS 302
Aug 1, 2022 · Buying a BOSS 302. So, you're interested in buying a 1969 or 1970 Ford BOSS 302 Mustang or Mercury Cougar Eliminator? Well, you've come to the right place. We have a few tips on where to find one and what to look for when you think you've found the car of your dreams. Remember, you're buying a used car. Be smart.
Flywheel - BOSS 302
Oct 11, 2023 · The BOSS 302 flywheel is cast iron and the casting carries engineering part number C9ZE-6375C (released as C9ZE-6375-C). The assembly is completed with a starter ring gear which has 164 teeth. The assembly has a twenty-eight (28) ounce (oz.) imbalance and weighs thirty (30) pounds (lbs.).