Thursday, November 26, 2015

Parts Bin Powerhouse – 1968 Ford Mustang GT Cobra Jet

1968 Ford Mustang GT Cobra Jet

Photos by Matthew Litwin.

Editor’s note: This article originally appeared in the November 2009 issue of Hemmings Muscle Machines

In the spring of 1978, Chris Teeling was searching for a clean Mustang drag car in the NHRA’s National Dragster classifieds. Among those pages, he struck gold.

What Chris happened upon was a rare example of what many Ford enthusiasts consider to be the Mustang drag car–a 1968 1/2 428 Cobra Jet, perhaps the purest specimen of organically grown factory muscle ever offered to grassroots racers. Why is this such a coveted car? Not only did the CJ grow out of one dealer’s desire to win on Sunday and sell on Monday, but it was built using off-the-shelf parts. Furthermore, a surge of interest from enthusiasts reading about this super Mustang in a popular magazine is credited with Ford’s decision to make the CJ a factory program.

Chris’s National Dragster find has an unmistakable pedigree as a quarter-miler. It was ordered new at Tasca Ford in East Providence, Rhode Island–birthplace of the Cobra Jet and the Thunderbolt. Ordered with the deepest available 4.30:1 gear, it also sported Traction-Lok to make it launch hard. For stopping at the other end of the strip, it had standard power disc brakes. Today, Chris is an authority on the CJ and one of the keepers of the Cobra Jet Registry, but he knew considerably less about the history of his car (and Cobra Jets in general) when he picked it up back in May 1978.

“I was looking for a solid 1968 fastback to put together as a drag race car,” he said. “It was in very good condition with no rust and 26,517 original miles–although it had been raced and was missing the original engine and transmission. It had a 1970 registration sticker on it, so I knew it had not been driven on the road since the fall of 1970.”

1968 Ford Mustang GT Cobra Jet

Originally, Chris’s plan was to drag race the car after installing a small-block–an obvious downgrade from what the factory had packed into this Brittany Blue sportsroof CJ Mustang. The CJ was Dearborn’s Hail Mary pass: An attempt to win back its “Total Performance” image, which appeared to be wasting away under the hood of the 1967 390 G.T. And it came at the urging of its second largest and most performance-oriented dealer, Tasca Ford, along with Hot Rod magazine and 2,000 or so Hot Rod readers.

“We sold a lot of 390 Mustangs last fall and into the winter, but by March they dropped off to practically nothing,” Tasca performance manager Dean Gregson told Hot Rod editor Eric Dahlquist in 1967. “In fact, we found the car so noncompetitive for the super car field, in a sense we began to feel we were cheating the customer. He was paying for what he saw advertised in all the magazines as a fast car, but that’s not what he was getting. So we did something about it. We began to offer the customer little packages of stock pieces to make his machine like it was supposed to be.”

Bob Tasca Sr. himself put the 390 GT’s performance woes in even blunter terms: “The 390 Mustang–even the new 428–isn’t competitive with the 400 Firebird, GTO, 4-4-2 Olds, Buick Special Gran Sport, Plymouth GTX, Dodge R/T, 383 Barracuda,” Tasca told Hot Rod. “You know how many high-performance vehicles (over 300 horsepower) were sold in this country in 1966? 634,434. Do you know how much Ford Motor Company had of this market? 7.5 percent. That’s shameful for a ‘Total Performance’ company.”

Tasca Ford took matters into its own hands building what it called the KR-8–a Mustang that could run 13.39 at 105 MPH with street tires and closed exhaust. Tasca’s KR-8 used a 428 Police Interceptor short-block, 1963½ 427 heads with 2.09-inch intake and 1.66-inch exhaust valves and a hydraulic camshaft from a GT/A 390. The intake was an aluminum police interceptor unit topped with a Holley carburetor, while the exhaust “header” manifolds were pulled from the 427 Fairlane. To make sure their car would get down the track, Tasca implemented a number of standard drag-race modifications, including relocating the battery to the trunk and clamping the leaf springs.

Tasca may have built the car, but Dahlquist’s salvo, launched in the pages of Hot Rod, weighed heavily in Ford’s decision to build the CJ. Dahlquist printed the recipe for the CJ as well as all of Tasca’s comments, and then piled on the heat by calling Ford management out of touch. Finally, he topped his story with a ballot and urged Hot Rod readers to send their votes in to Henry Ford II.

1968 Ford Mustang GT Cobra Jet

“The bitter irony is that Ford has all the pieces in its inventory to create the hottest volume production machine ever built,” Dahlquist wrote in the November 1967 Hot Rod. “It has the talent to put it together and the racing program to fully exploit it, but the myriad of people who pull the springs, the men without whose word nothing moves, are so intoxicated by track victories like dual Le Mans (back-to-back) that they cannot comprehend their street products as being counterfeit. Then, too, used to the floating grandeur of an LTD or Continental, the occasional encounter with a Mustang GT must feel like a Saturn V booster.”

Ford eventually got the message; by the March 1968 issue of Hot Rod, Dahlquist was celebrating the production car’s arrival. “Such is Ford’s great leap forward–the Cobra Jet. The mere fact that these Dearborn rocket sleds are coming off the production line deserves some kind of award. However, it is no cause for complacency, since competitors like Pontiac and Chevy are not far behind, if at all, and will surely meet this potential threat with further escalations of their own.

“Fortunately for Ford, their supporters from the good old days are still legion and if they weren’t, the strength of a single Cobra Jet blast-off will put thousands into orbit for the nearest auto loan department. Demonstrating its new confidence in the whole project, Ford has scheduled a trial balloon of 5,000 units (or about half the demand). It’s so very close to what Ford has needed all these years that it can’t miss.”

So, after all that, the Cobra Jet package became available on Mustangs and Fairlanes starting in 1968. On the Mustang, the $420.96 428 CJ engine package included chrome rocker covers, ram-air induction with a functional hood scoop, “competition handling” suspension, F70-14 Wide Oval belted traction tires with white letters or whitewalls, the buyer’s choice of a 3.50, 3.90 or 4.30:1 axle, and an 80 amp/hour battery. The GT equipment group was a mandatory $146.71 option, as were power disc brakes at $64.77. CJ buyers could choose between the $233.18 four-speed manual or the $233.17 Cruise-O-Matic C-6 automatic transmission.

Below the skin, the 1968½ CJ also had reinforced shock towers and staggered rear shocks on four-speed cars. The Toploader transmission was NASCAR-spec and the 9-inch rear boasted 31-spline axles. The CJ Fairlane package was similar to the CJ Mustang but lacked the functional hood scoop and ram-air induction; no four-speed manual was available.

While today, Chris, an engineer at United Technologies working in fuel cell testing, is well versed in the various attributes and fine points of the CJ, the knowledge was hard-won over time; when he first brought his CJ home, he had no idea of its long and troubled development.

“I bought the car in 1978 and the first thing I did was put a small-block in it,” he said. “The guy I bought it from had bought it from the original owner, and he kept the engine and transmission for a show car. I didn’t have a 428. I drove it about 50 miles and blew up the transmission.”

With just 26,000 miles on the odometer and a suspicion that his car might be worth restoring rather than racing, Chris began gathering parts and information.

“I didn’t know much about Cobra Jets then and I found very little information about the ’68½. After a year or two, I thought maybe I shouldn’t put it together as a race car, so I started collecting 428 stuff for it. But trying to find the detail parts was challenging.”

1968 Ford Mustang GT Cobra Jet

As Chris was gathering information and parts, he was also making valuable contacts with other enthusiasts and 1968½ CJ owners, which he used to form the 1968½ Mustang CJ Registry. This later led to him joining forces with Scott Hollenbeck to co-administer the 428 CJ Mustang Registry at www.428CobraJet.org. Today, the registry can account for 2,458 Mustangs; just 422 are 1968s like Chris’s. And out of those, he estimates that only a handful are in original condition.

“Out of 1,299 built, most of them were raced, so of the 422 out there, there might be less than 10 that are totally original,” he said.

When Chris embarked on a restoration of his car, he was missing the original engine and all of its trimmings, like the hood scoop and air cleaner as well as the transmission, the rear seat and bumper bracing.

The date-coded engine that is now in the car has 10.8:1 compression and has been bored .030-inch over. It uses a Comp Cams hydraulic camshaft with .530 lift and 280 degrees duration, installed 4 degrees advanced. A pair of CJ heads and an aluminum 428 Police Interceptor manifold topped with a 735 CFM Holley finish off the factory-fresh-looking package. Chris stirs the Toploader four-speed with a Hurst Competition Plus shifter through a McLeod 11.5-inch clutch.

Lest you doubt the CJ’s quarter-mile abilities, at the 1992 Super Car Showdown at New England Dragway in Epping, New Hampshire, Chris drove his Mustang to an impressive 12.62 at 110 MPH. He won his class at the drags that day–and also won his show class at the same event.

These days, the fully restored CJ’s life is more show than go. Most recently, the car won first-place Ford honors at the spring 2009 edition of Musclepalooza at Lebanon Valley Dragway in West Lebanon, New York. But whether it’s taking a win light or a trophy, Chris says he values the many connections that building the Mustang drag car has afforded him.

“I enjoy taking it to some of the major Mustang shows, as well as to racing events. I have been fortunate enough to meet some of the Ford 428CJ drivers like Barry Poole, Al Joniec and Phil Banner as well as many other owners of 1968½ Mustangs.”

 

Owner’s View

My original intent was to drag race the car. By the early 1980s, it was clear that it made more sense to restore it than modify it. The performance, styling and rarity of the 1968½ Mustang CJ make it a special car. I have enjoyed meeting others from around the world.–Chris Teeling

 

Club Scene

Mustang Club of America

4051 Barrancas Avenue PMB102

Pensacola, Florida 32507

(850) 438-0626

Dues: $40/year • Members 11,000

 

428 CJ Mustang Registry

www.428CobraJet.org

 

PROS

+ It’s a ’68½, not a ’69 or ’70

+ Faster than stock

+ Show and race wins at same event

 

CONS

– Lacking original CJ engine

– Infrequently raced

– Owner estimates 8 MPG

 

1968 Ford Mustang GT Cobra Jet Specifications

Price

Base Price: $2,765.39

Price as profiled: $3,878.68

 

Options on car profiled (some prices N/A):

428 Cobra Jet engine, $420.96

G.T. equipment group, $146.71

Power disc brakes, $64.77

Four-speed manual transmission, $233.18

Torque-compensating locker rear axle, $63.51

Tinted glass

Wheel lip moulding

Goodyear tires

High Performance tuning (by Tasca Ford)

 

Engine

Type: Ford FE Series 90-degree V-8, cast-iron block and cylinder heads

Displacement: 428 cubic inches

Bore and Stroke: 4.232 x 3.784 inches

Compression ratio: 10.6:1

Horsepower @ RPM: 335 @ 5,600

Torque @ RPM: 445-lbs.ft. @ 3,400

Valvetrain: Hydraulic valve lifters

Main bearings: 5

Fuel system: 735 CFM Holley 4150 carburetor, mechanical Carter fuel pump

Lubrication system: Pressure, gear type pump

Electrical system: 12-volt

Exhaust system: Dual exhaust

 

Transmission

Type: Ford Toploader four-speed

Ratios 1st: 2.32:1

2nd: 1.69:1

3rd: 1.29:1

4th: 1:1

Reverse: 2.32:1

 

Differential

Type: Traction-Lok limited-slip

Ratio: 4.30:1

 

Steering

Type: Recirculating ball

Ratio: 16:1

Turns, lock-to-lock: 3.75

Turning circle: 37.2 feet

 

Brakes

Type: Hydraulic, power assist

Front: 11.3-inch disc

Rear: 10 x 2-inch drum

 

Chassis & Body

Construction: Unit-body, welded steel

Body style: Two-door fastback coupe

Layout: Front engine, rear-wheel drive

 

Suspension

Front: Independent, coil springs, ball joints, upper wishbones, single lower arms with Autolite shocks, 5/16-inch anti-roll bar

Rear: Live axle with semi-elliptic springs, anti-roll bar, staggered tubular hydraulic Autolite shocks

 

Wheels & Tires

Wheels: Pressed steel disc

Front: 14 x 6-inches

Rear: 14 x 6-inches

Tires: Bias ply Goodyear Polyglas

Front: F70-14

Rear: F70-14

 

Weights & Measures

Wheelbase: 108 inches

Overall length: 183.6 inches

Overall width: 70.9 inches

Overall height: 51.6 inches

Front track: 58.5 inches

Rear track: 58.5 inches

Shipping weight: 3,280 pounds

 

Capacities

Crankcase: 6 quarts

Cooling system: 20 quarts

Fuel tank: 16 gallons

Transmission: 2 quarts

 

Calculated Data

BHP per cu. in.: 0.782

Weight per BHP: 9.79

Weight per cu. in.: 7.66

 

Production

1968 Mustang Cobra Jet 1,299

 

Performance*

Acceleration:

1/4-mile ET: 13.20 seconds @ 107.40 MPH

*Source: November 1968 Rodder and Super/Stock



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