What kind of engine did Pontiac have in 1955?
The 1955-up Pontiac V8 that finally reached the public was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers. An innovative design feature was mounting the rocker arms on ball pivots on studs set into the cylinder head, rather than using a separate rocker shaft.
When did the last Pontiac V8 engine come out?
The last “true” Pontiac V8s, a 265 and 301 cu in (4.3 and 4.9 L), ended production in early 1981. The 1955-up Pontiac V8 that finally reached the public was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers.
What was the name of the 1958 Pontiac Strato Streak?
The 1958 370″ engine and the 1959–60 389 version was named the “Tempest” V-8 and changed in 61 to the “Trophy” V8. Pontiac in the 1950s was one of a few US manufacturers which did not regularly identify its engine names and sizes with air-cleaner or valve-cover decals. The V8 engine was introduced for the 1955 model year as the “Strato Streak”.
What was the compression ratio of a Pontiac V8?
Compression ratio was a modest 8.00:1, with valve diameters of 1.781 in (45.2 mm) (intake) and 1 1⁄2 in (38 mm) (exhaust). It was rated 180 hp (134 kW) @ 4600 rpm and 264 lb⋅ft (358 N⋅m) @ 2400 rpm with a two-barrel carburetor, 200 hp (149 kW) @ 4600 rpm and 278 lb⋅ft (377 N⋅m) @ 2800 rpm with the four-barrel carburetor.
The last “true” Pontiac V8s, a 265 and 301 cu in (4.3 and 4.9 L), ended production in early 1981. The 1955-up Pontiac V8 that finally reached the public was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers.
The 1955-up Pontiac V8 that finally reached the public was an overhead valve engine with cast iron cylinder heads and block and wedge-shaped combustion chambers. An innovative design feature was mounting the rocker arms on ball pivots on studs set into the cylinder head, rather than using a separate rocker shaft.
The 1958 370″ engine and the 1959–60 389 version was named the “Tempest” V-8 and changed in 61 to the “Trophy” V8. Pontiac in the 1950s was one of a few US manufacturers which did not regularly identify its engine names and sizes with air-cleaner or valve-cover decals. The V8 engine was introduced for the 1955 model year as the “Strato Streak”.
When did Pontiac start making their own engines?
Pontiac planned to produce the 1953 models with the V8, but Buick and Oldsmobile appealed to GM management and earned a 2-year delay. Displacement began at 287-cubic-inch (4.7 L) and grew as large as 455-cubic-inch (7.5 L) by 1970. Pontiac continued to manufacture its own engines, distinct from Buick, Cadillac, Chevrolet, or Oldsmobile, until 1981.