the 4 bbl. version was 335 horse and the tri power version was 360 horse.
389 cubic-inch. 360 horsepower
An intake from a Pontiac 400 will fit a 389 as long as the engine, or more specifically, the heads are from model year 1965 or 1966.
6
1964 Standard 389 4bbl had 325 horsepower. Optional 389 Tri-power had 348 Horsepower
Most Catalina's were equipped with a 389 cubic inch V-8 engine. The 2+2 sport models had a 421 cubic inch engine. The 389 engines came in different configurations that affected the horsepower rating. Open the hood and face the engine. On the front, left side (as you face it) of the engine block is a two letter engine code. You can reference that code against another source and determine a lot of other information about the engine.
Info at this site might be helpful. http://www.justanswer.com/questions/2zzo6-timing-a-1966-pontiac-gto-389-with-tri-power-what-is-the-best
389 and a 421 engine for a 1967 Pontiac catalina
A direct bolt in, 1961 to 1965 389 ci, Pontiac including the Pontiac Tempest.
6.5 liter 389 4bbl puts out 335 hprsepower at the crank. The tri power puts out 360 horsepower at the crank.
Driver side front cylinder.
No, all the production 1966 GTOs were 389 cubic inch V8s which is about 6.5 liters.
389 cid