| |
The 365 GTC/4
debuted at the Geneva Motor Show in March, 1971. Although the car sports two
small rear "seats", it wasn't designed as a replacement for the longer 4-seat
365 GT2+2, instead it was Ferrari's newest civilized and practical 2-seat
coupe, similar to the previous 330 GTC and 365 GTC models.
Mechanically, the
365 GTC/4 is closely related to the 365 GTB/4 "Daytona" but it presented its
own innovations, including power assisted steering, a large trunk, and side
draft carburetors which allow a lower hood line. As Road and Track said
in its July 1972 review of the car: "In all, a graceful, clean and understated
design with subtleties one discovers only by looking it over carefully. One
might say this model is a Ferrari for the mature enthusiast." Or, Winston
Goodfellow was quoted in the
Forza 365 GTC/4 Buyer's Guide as saying: "The styling is so elegantly
low-key that the model is often overlooked."
Many Ferrari enthusiasts will tell you that the 365 GTC/4 is either "the most
under-rated Ferrari" or "The best sounding Ferrari ever made", or both.
Listen to a 365 GTC/4 run through 1st and 2nd gears (a 197kb WAV file).
| Manufacturer: |
Ferrari |
| Body Design: |
Pinninfarina |
| Designer: |
Filippo Sapino |
| Model: |
365 GTC/4 |
| Price (in 1972): |
$27,500 |
| Years made: |
1971-1973 (serial #s 13143-17237) |
| Total made: |
505 (180 in US) |
| Exterior Colors: |
48 Available |
| Interior Colors: |
10 Available |
|
|
|
The GTC/4 used a
welded tubular steel chassis designated Tipo F101 AC 100, this itself being
clearly developed from Ferrari's Tipo 591 frame seen previously on the 365 GT
2+2, the model this new car was replacing. But Ferrari wanted the C/4 to appeal
to buyers of both two-seat Coupes and larger 2+2’s, so they cut 150mm from the
wheelbase to give more sporting than touring characteristics. Having become
familiar practice on all Ferrari's since the 1964 275 GTB, there was
independent suspension all round and again, much like the 365 2+2, power
steering as standard with hydraulic self-levelling rear ride height control.
Cromodora alloy wheels were also fitted as standard but Borrani wires were
optionally available.
Meanwhile,
designated Tipo F101 AC 000, the GTC/4's powerplant was similar to the DOHC
Tipo 251 60° V12 engine already used in the Daytona. Displacement of both these
units was 4390cc thanks to a bore and stroke of 81mm x 71mm respectively.
However, the F101 featured new heads, wet sump lubrication, a lower compression
ratio of 8.8:1 and six side draught Weber 38 DCOE carburettors. Power for the
European version was 340bhp at 7000rpm while Ferrari's North American version
fitted with emissions equipment lost around 20bhp. But as a result of fitting
sidedraught carburettors, the Tipo F101's dimensions were wider and lower than
with downdraught's, this allowing the GTC/4 to use a noticeably more shallow
hood than the Daytona.
The 365 GTC/4's relatively low production run (505 units) makes it much less
well known than models such as the Daytona and 246 GT Dinos, both of which were
manufactured at the same time. Additionally, it didn't fit too well into the
product line -- it wasn't the high-performance coupe that the Daytona was, yet
its back seats weren't suited for anyone to actually sit on so it didn't fill
the bill as a 4 seat replacement for the 365 GT 2+2. Still, it is one of the
best driving V-12 Ferraris ever made.
As is the tradition
with Ferrari, the bodywork was designed by Pininfarina in Turin and, unlike the
Daytona that had its bodies constructed by Scaglietti in Modena, those of the
GTC/4 were also produced by Pininfarina and then shipped to Maranello for
completion. Finished entirely from steel with the exception of an aluminium
bonnet and rear lid, some knocked the styling, questioning its apparently
‘un-Ferrari-like’ appearance. While the looks were panned as being too boring
in 1971, they have proven themselves graceful and timeless, as so many fine
Pinninfarina styles do.
A number of interesting features were incorporated on Pininfarina's design for
the GTC/4 and its lines become more and more attractive the closer they are
studied. Most immediately apparent is the distinctive matte black synthetic
resin noseband that replaced traditional chrome bumper trim for the front of
the car, a detail unique to this model. Indeed, matte black was also used for
the rear bumper and tail-light panel. Both features contributed to the
refreshing lack of chrome and this cars cleanliness of line, a practice
initially begun on the Daytona. While the black bumpers did not meet universal
approval, they are quite tasteful compared to the huge units applied to the
Lamborghinis of the time. Two other details worthy of mention were the
extremely low bonnet with its retractable headlights and that Kamm tail
featuring the de-rigueur round Ferrari tail lights, six in number.
It is a much lower and more exotic looking car than the boxy 400-series 2+2s
that replaced it, and is more angular and modern looking than the 365 GTC and
365 GT2+2 that preceded it. The side profile is low and graceful, without the
need for excessive scoops and ducts. The rear three-quarter view of a GTC/4
exudes restrained power and early seventies Pininfarina style.
The cabin was to a completely new design and featured an instrument binnacle
that was now becoming ever more integrated into the central console in a move
that was to suggest the style for years to come. Overall, the interior was more
comfortable and refined than that of the Daytona and offered a good deal more
luggage room plus two small seats although these were best folded down for
additional storage space. Indeed, this cabin allocated rear occupants with a
much smaller degree of legroom than previous 2+2 models, a factor attributable
to it's drastically reduced wheelbase. Air conditioning was fitted as standard
but so were cloth seat centers with leather bolsters, a full Connolly leather
interior being optional (15505 is so equipped).
The lovely 4.4 liter V-12 engine provides great power and torque and the
exhaust system on the 365 GTC/4 makes a deep throaty rumble which is much more
aggressive sounding than even that of the Daytona. Opening the hood always
impresses. Everything comes in multiples with this car. The six side-draft
carburetors necessitated by the low hoodline sit flat atop the motor, making it
appear big and wide, which it is. In the center of the 4 camshafts are two oil
filters to clean the 18 quarts of oil required by the engine, along with the
complex throttle linkage required to open the 12 throats of those 38DCOE
Webers. Tucked under the cowl are the two distributors, housing 2 sets of
points each and sparked by two "dinoplex" electronic coil units mounted on the
fender wells.
| Engine type: |
F101 AC |
| Cylinders: |
12, in 60o V |
| Bore: |
81 mm / 3.19 in |
| Stroke: |
71 mm / 2.79 in |
| Capacity: |
4390 cc / 268 cu in |
| Compression: |
8.8 to 1 |
| Horsepower: |
340 bhp @ 6200 rpm (320 in USA) |
| Torque: |
318 lb-ft. @ 4000 rpm |
| Camshafts: |
4, dual overhead |
| Valves: |
2 per cylinder |
| Ignition: |
2 Marelli distributors |
| Fuel system: |
6 Weber 38DCOE 2-barrel carburetors |
| Librication: |
Wet sump |
| Cooling: |
Water |
| Clutch: |
Single dry plate, 241.3 mm |
| Gearbox Type: |
Manual, all synchromesh |
| Gears: |
5 forward, 1 reverse |
| Engagement Ratios: |
1st gear - 1:2.492 29x38/26x17
2nd gear - 1:1.674 29x33/26x22
3rd gear - 1:1.244 29x29/26x26
4th gear - 1:1 29x26/26x29
5th gear - 1:0.801 29x23/26x32
Reverse - 1:2.416 29x34/26x17
|
| Differential: |
Hypodial with pivoting half-shafts |
| Reduction Ratio: |
11/45 |
All this makes for
a complex but reliable high-performance engine. Of course, complexity adds
cost. A well-maintained 365 GTC/4 will provide years of trouble-free operation
but maintenance tasks can be difficult and expensive. Obviously, changing the
oil requires purchase of two oil filters and 18 quarts of high-quality oil.
Removing and reinstalling the air cleaners takes about two hours of
contortionism to reach the multitude of nuts under the carb velocity stacks.
Synchronizing the carbs takes experience, knowledge, and tools. Probably the
single biggest preventive maintenance task is valve adjustments. Because the
intake manifolds pass through the center of the cam covers, the carbs must be
entirely removed to reach the valves. If you are looking to purchase a 365
GTC/4 make certain that this task wasn't neglected -- it is required every
15,000 miles.
Handling characteristics of a 365 GTC/4 are phenomenal, especially for a 3,800
pound, 25 year-old car running on skinny tires. The independent suspension
works well, with cornering fairly flat and very predictable. Stability at high
speeds is good with top speed being more limited by faith in old tire
technology than by the car itself.
| Steering: |
Rack and pinion, power assisted |
| Suspension: front: |
Independent, unequal length A-arms, coil springs, hydraulic tube shock
absorbers, anti-roll bar |
| Suspension: rear: |
Independent, unequal length A-arms, helical springs, hydraulic tube shock
absorbers, anti-roll bar, oil pneumatic self-leveling system |
| Brakes: |
Dual hydraulic system, vacuum assist
front: 11.3 in. ventilated disc
rear: 11.7 in. ventilated disc |
| Tires: |
Michelin XWX 215/70 VR 15 in. tubeless radials |
| Wheels: |
7.5 X 15 in. 5-spoke Chromodora cast in light alloy or Borani chrome wire
spokes with knock-off hubs |
|

|
| Performance |
|
| Lb/bhp: |
12.9 |
| 0-60 mph: |
6.7 seconds |
| 0-120 mph: |
18.0 seconds |
| Top speed: |
163 mph @ 6850 rpm |
|
|
| Chassis: |
Steel tube frame with steel panels |
| Configuration: |
Front engine / rear drive |
| Seating: |
2 persons |
| Designer: |
Pinninfarina |
| Weight: |
1730 kg / 3,823 lb (dry) |
| Distribution: |
51/49 |
| Wheelbase: |
2500 mm / 98.5 in |
|
|
Informational Resources:
|
Buyers Guide from Forza, June 1998
Buyers Guide from FerrariLife, May 2006
Road Test from Road and Track, July 1972
Article from Prancing Horse, Issue #70
"The Best Ferrari Under $50,000" Article by Mike Sheehan from Sports Car Market, August 1998
Article from Sports Car Market, August 2005
|
|
Technical Resources:
|
An overview of Ferrari factory literature for the 365 GTC/4 model
List of factory paint and interior color codes
Koni Rear Shock Technical Information
Valve Adjustment Instructions by Bill Badursky
Valve Adjustment Instructions by Phil Auldridge
Cam Chain Adjustment Page from Repair Manual
Weber Carb Parts
|
|
Factory Manuals:
|
Operations Manual
USA Supplement
|
|
Factory Bulletins:
|
Official Certificate of Homologation
Bulletin #180 - Section of Synchro Ring
Bulletin #195 - Dipstick Measurements
Bulletin #196 - Windshield Wiper Parking Exclusion
Bulletin #198 - Accelerator Control Support
Bulletin #199 - Exhaust System Positioning
Bulletin #208 - Classification of Connecting Rod Loads
Bulletin #212 - Brake Disc Thickness
Bulletin #217, 220, 221 - Distributor Advance Curves and Part Numbers
Bulletin #226 - Gearbox Part Updates
Bulletin #240, 273 - Thermostat Updates
Bulletin #246 - Mainswitch Standardization
Bulletin #249 - California Smog Inspections
Bulletin #281, 291 - Suspension and Shock Settings
Bulletin #283 - Chassis Tightening Torques
Bulletin #283 - Engine Tightening Torques
Bulletin #297 - Guard Ring for Front Hubs
|
|
|