What horsepower and torque did the 428 Cobra Jet engine have?

The telegram lists brake horsepower as 335 @ 5400 RPM and torque as 440 lbs./ft. @ 3400 RPM, with 428 CID displacement and 4V carburetion.

Where were these cars built and how long was delivery?

They were built at the Dearborn Plant DSO facility, with delivery approximately two weeks from date the order was received, depending on proximity to the Dearborn Plant.

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1967 Ford Telegram: 428 Cobra Jet Mustang Announcement - Specs & Pricing

Ford telegram Dec 26 1967 announcing 428 Cobra Jet engine Mustang to dealers with specifications

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Ford internal telegram dated December 26, 1967 announcing the 428 Cobra Jet Mustang 2+2 fastback to dealers: 428 CID 4V rated 335 HP @ 5400 / 440 lb-ft @ 3400, HD 4-speed, 3.89 axle, ram-air hood, $2,907.67 delivered.

AI caption January 2011 · Photo 217 of 486

This document is a scanned Ford Motor Company internal telegram dated December 26, 1967, sent from Product Development to all Regional and District Sales Managers announcing the 428 Cobra Jet engine Mustang. It instructs that the information be duplicated and forwarded to all Ford dealers. Effective December 26, 1967, orders would be accepted for a limited number of Mustang 2 plus 2 Fastbacks pre-built with 428 CID Cobra Jet engines, with no additions or deletions allowed. The telegram lists complete specifications: 428 CID displacement, 4V carburetion, 335 brake horsepower at 5400 RPM, 4.13 x 3.98 bore and stroke, 440 lbs./ft. torque at 3400 RPM, a heavy duty four-speed manual transmission, 3.89 axle ratio, manual drum brakes, F70-14 Wide Oval whitewall tires, Ram Air hood with hood scoop and air cleaner assembly, Wimbleton White (Code M) exterior, and black all-vinyl interior. Cars were to be built at the Dearborn Plant DSO facility with approximately two-week delivery. Pricing was $2,907.67 wholesale delivered (excluding Schedule B delivery charges) and $3,612.69 suggested retail, with a 12-and-12 warranty. This is a historically significant piece documenting the launch of the 1968 428 Cobra Jet Mustang program.

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Frequently asked questions

What horsepower and torque did the 428 Cobra Jet engine have?: The telegram lists brake horsepower as 335 @ 5400 RPM and torque as 440 lbs./ft. @ 3400 RPM, with 428 CID displacement and 4V carburetion.
When did Ford start accepting orders for the 428 Cobra Jet Mustang?: Effective December 26, 1967, orders were accepted for a limited number of Mustang 2 plus 2 Fastbacks equipped with 428 CID Cobra Jet engines.
What were the fixed specifications of the pre-built Cobra Jet Mustangs?: Heavy duty four-speed manual transmission, 3.89 axle ratio, manual drum brakes, F70-14 Wide Oval (WSW) tires, Ram Air hood with hood scoop and air cleaner assembly, Wimbleton White (Code M) exterior, and black all-vinyl interior. No additions or deletions could be made.
How much did the 428 Cobra Jet Mustang cost?: The completely equipped vehicle was priced at $2,907.67 wholesale delivered (excluding Schedule B delivery charges) and $3,612.69 suggested retail, with a 12 and 12 warranty.
Where were these cars built and how long was delivery?: They were built at the Dearborn Plant DSO facility, with delivery approximately two weeks from date the order was received, depending on proximity to the Dearborn Plant.