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The '69/'70 "round-port" RA IV engine, a derivative of the '68½ "round-port" RA II engine, was the most exotic high-performance engine ever offered by PMD and factory-installed in a GTO or Firebird. The 1969 version had a slight advantage as the compression ratio was still at 10.75:1 as opposed to 10.5:1 in 1970.
The ten horsepower increase over 1968's engines was due to a different cam and the use of the #48 big valve heads, the same head used on the Ram Air 3 400-cubic inch 366 hp (273 kW) engine and the 428-HO engine at 390 hp (291 kW). The 1969 model year would be the last high-performance version of the Pontiac 350.
• This GTO Judge features a replacement 400-cubic-inch Ram Air III V-8 with a Muncie M20 four-speed manual transmission and a Safe-T-Track rear axle. • The auction ends on Sunday, April 24 ...
A new GTO option became available, The Judge. Featuring special decals, two Ram Air versions of Pontiac's 400 engine, and a rear spoiler, The Judge was originally conceived as a barebones muscle car based on the Tempest to compete with the new sub-$3,000 Plymouth Roadrunner. Plans for the new model were terminated, and Pontiac division head ...
For the 1969 and 1970 model years it was the standard engine in both the Firebird Trans Am and the GTO Judge. It was the same engine as the '67-'68 400 HO [22] but for 1969 and 1970 it included a driver-selectable outside air induction system on the GTO(it was a separate option on Firebird), with the hood vents opened and closed using a knob ...
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And all hail for the first real muscle car.
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