What is a 389 Tri-Power?

Pontiac introduced its 389 V8 for 1959, offering it through 1966, when it became the standard engine for the GTO. Fed by three two-barrel Rochester carburetors, the Tri-Power variant entered the scene in 1964, rated at 348 horsepower.

How much horsepower does a 389 Tri-Power have?

325 horsepower
The burly 389 cubic-inch eight-cylinder engine, borrowed from Pontiac’s full-size offerings, put down an impressive 325 horsepower while flying in the face of GM’s then-recent prohibition on engines larger than 330 cubic inches in intermediate-sized vehicles.

Is the Pontiac 389 considered a big block?

By varying bore, stroke, journal size and deck height, Pontiac offered their sole V8 Uniblock in displacements ranging from 265 to 455 cubic inches, the most renowned being the 326, 389, 400, 421, 428 and 455. Bear in mind that a big block is not necessarily a one-size-fits-all holy grail.

What years did GTO have Tri-Power?

The Tri-Power package was available from 1964-1966. It would cost the customer $90 to $100 (with $6.75 or $7.50 handling). This was much more affordable than some fuel injection systems of the time and offered a significant performance boost, increasing horsepower to 360.

What is a Tri-Power engine?

Tri-Power was the name for an arrangement of three two-barrel carburetors installed on large performance V8s offered by the Pontiac Division of General Motors in the late 1950s and 1960s.

Who made the 389 engine?

Pontiac
Students of the Pontiac V-8 know that while the 389 was a great engine for its time, the introduction of the 400 in 1967 also brought several design changes that significantly improved performance. Most notable were in the cylinder heads and induction system.

How fast can a 1967 GTO go?

Car Life clocked a GTO so equipped at 0-60 miles per hour (0-97 km/h) in 6.6 seconds, through the standing quarter mile in 14.8 seconds with a top speed of 99 miles per hour (158 km/h).