What was the bank angle of the Buick nailhead V8?
What was the bank angle of the Buick nailhead V8?
These prototype engines, which employed 22.5 and 35 degree vee angles, offered little packaging advantage over the old straight eight and were soon discarded. While the production Nailhead V8 used a conventional 90-degree bank angle, it offered a number of novel features as well. Let’s dive straight in for a closer look.
What was the torque number on a Buick nailhead?
Buick was so impressed with their torque figures that the air cleaner on that engine was marked “Wildcat 445” – which was the torque number, not the displacement or horsepower. The Nailhead was no slouch. They found themselves into some GM heavy truck applications as did the Pontiac V8s. They pulled like troopers.
How big are the intake and exhaust valves on a Buick?
Intake and exhaust valve diameters on the original 322 CID version were 1.75 inches and 1.25 inches, respectively, while later they were enlarged to 1.875 and 1.50 inches. The relatively small valves and their layout—vertical, in a row, like nails in a plank—generated the familiar Nailhead label, which was never adopted by Buick, needless to say.
What’s the idle speed on a 1954 Buick?
1954-59, All V-8: Yellow mark on crankshaft pulley. The indicator plate on the chain cover has “0” at top dead center and 3 marks at 2 1/2 degree intervals before TDC (2 1/2,5,7 1/2 degrees before top dead center). Reduce idle speed to 400 RPM.
What was missing from 1966 Buick Riviera GS?
A missing option was the Super Wildcat, as engineering was preparing for the launch of the new-generation 400- and 430-cu.in. engines, destined to replace the 401 and 425 nailhead V-8s. There was demand for the high-output 425, however, and on March 1, Buick reinstated the 360-horse beast as a factory option.
What kind of differential does a Buick Riviera have?
A standard feature in every Riviera GS was the inclusion of a limited-slip, 10-bolt differential, though Buick literature incorrectly states it came with a 3.23:1 gear set. The limited-slip, PY-coded unit actually contains a 3.42:1 gear set.
What kind of engine does a 1966 Buick Riviera have?
A dual exhaust system assisted with the engine’s breathing. This collective effort resulted in 340hp at 4,400 RPM and 465-lbs.ft of torque at 2,800 RPM; the same rating since its introduction. Identifying this engine can be accomplished by looking for the MW code on the block’s front lip.
What was the first year of the Buick Riviera?
Introduced in 1963 as an option for the first-year Riviera, it was a 425-cu.in. cast-iron heavyweight that featured 4.3125-inch bores for cast aluminum-alloy pistons that, while linked to a steel crankshaft via 6.22-inch-long connecting rods, traveled 3.64 inches.
How did the Buick nailhead get its name?
Here’s the story behind Buick’s powerhouse, including how it earned the name Nailhead. Unlike Cadillac and Oldsmobile, the Buick division of General Motors was in no particular rush to offer an overhead-valve V8 in the postwar era.
What kind of engine does a Buick nailhead have?
This experimental 215 CID V8 was installed in two famous GM concept cars, the 1951 LeSabre Motorama dream car and the Buick XP-300 roadster. Supercharged, all aluminum, and sporting hemispherical combustion chambers, this engine developed 300 hp.
Where are the spark plugs on a Buick nailhead?
Note the vertical valves and central spark plug location, providing a tidy pentroof chamber configuration. Buick engineers also took pains to maintain a consistent intake port diameter from the intake manifold flange to the valve seat, in order to maintain uniform airflow velocity.
When did the Buick nailhead engine come out?
The distributors were in the rear and the starters were on the driver’s side, unlike later Buick engines. Built from 1953 through 1966, the Nailhead family included a variety of displacements including 264 c.i.d., 322 c.i.d., 364 c.i.d., 401 c.i.d. and 425 c.i.d. variations.
These prototype engines, which employed 22.5 and 35 degree vee angles, offered little packaging advantage over the old straight eight and were soon discarded. While the production Nailhead V8 used a conventional 90-degree bank angle, it offered a number of novel features as well. Let’s dive straight in for a closer look.
Note the vertical valves and central spark plug location, providing a tidy pentroof chamber configuration. Buick engineers also took pains to maintain a consistent intake port diameter from the intake manifold flange to the valve seat, in order to maintain uniform airflow velocity.
Who was the drag racer with the Buick nailhead?
While the Nailhead had its limitations for all-out performance use, it had its successful proponents in racing, including Max Balchowsky of Old Yeller road racing fame and drag racer Tommy Ivo, who learned his Buick engine-building tricks hanging out at Max’s Hollywood shop.
