Revealed in 1966 at the Paris Motor Show the Ferrari 275 GTB4 is the last and the most desirable in the 275 series. The 275 GTB4 is also the first ’production’ Ferrari to be fitted with the four overhead camshaft version of the V12, and was derived directly from the P2 prototype. During 1966 and 1968 Ferrari produced around 330 units.
The difference between a standard 275 GTB and the GTB4 version was its "long nose" and also for the GTB4 version the bonnet had a slim shallow central bulge running from front to rear. Like all the other Ferrari, the 275 GTB4 was designed by Pininfarina and built by Scaglietti, normally in steel with aluminum doors, bonnet, and boot lid, although a few examples received full aluminum bodies.
The bodies were mounted on a 2400mm wheelbase chassis that had factory reference numbers 596, and all were numbered in the odd chassis number road car sequence. The chassis was virtually identical to that of the two camshaft car, the revised number being due to minor differences in the drive train layout.
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Like its predecessor, the four camshaft model was available in right or left hand drive form. The standard wheels were alloy with a ten hole design, with the option of Borrani wire wheels throughout the production period, retained by a triple ear spinner. European market examples had circular rear light units with the upper section in orange for the turn signal, and featured a central circular reflector. US market cars had a full red rear lens with a central horizontal rectangular reflector.
The 275 GTB4 was powered by a 3.3-liter V-12 derived from Ferrari’s 1965 prototype racers. It had a dry-sump lubrication system and revised cylinder heads with four camshafts that gave the car its “4” suffix. The engine’s powered was increased with 40 hp, up to 300 hp. Top speed went up to 150 mph (although in 1965 a test car did the 0-60 mph in 6 seconds flat, and topped out at 156 mph).
In 2006 at the RM Auction in Monterey a Ferrari 275 GTb4 was auctioned for $990,000.