How much horsepower can you get out of a Pontiac 389?
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How much horsepower can you get out of a Pontiac 389?
The 389 cubic-inch V-8 engine hails from the Pontiac GTO and features three two-barrel carburetors that pushed the engine up to 348 horsepower back in the day. Regular 389 V-8 engines made 325 hp.
How much can you bore a 389 Pontiac?
Pontiac Blocks- Bore and Stroke
| PONTIAC ENGINE CHART | ||
|---|---|---|
| ENGINE | BORE | |
| 389 CU. IN. | Stock Bore | 4.062 |
| 30 over | 4.092 | |
| 60 over | 4.122 |
Is a Pontiac 389 considered a big block?
In 1966 Pontiac really didn’t have a small block engine. In an effort to keep things simple Pontiac designed all their V-8 engines around the same casting. Even the small displacement 326 CID motor is considered a big block. Therefore, the 389 Tri-power Trophy engine is also based off of the 326 block casting.
What is Pontiac Tri-Power?
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.
What Pontiac has a V-8?
The 301 was left as Pontiac’s only V8 for 1979 and it was joined by an even smaller 265 for 1980, before Pontiac V8 production ceased entirely in March 1981 after more than 14 million total V8s had produced over the years.
What was the first year Pontiac 389 engine?
The 389 was the standard engine for the Pontiac GTO through 1966. Beginning in 1961 the Pontiac V-8 (389 and 421) was dubbed the Trophy V-8, due to its many victories in racing.
How far can you bore a Pontiac 350?
All 350s can safely be bored 0.060-over.
When did Pontiac make the 389 engine?
1961
The 389 was the standard engine for the Pontiac GTO through 1966. Beginning in 1961 the Pontiac V-8 (389 and 421) was dubbed the Trophy V-8, due to its many victories in racing.
How much is a Pontiac Catalina worth?
Nowadays, the Pontiac Catalina can be found at just around $5000 in fairly good conditions, whereas the 1964 Pontiac Catalina Convertible would average at around $23,000.
Did Pontiac make an aluminum block?
“Pontiac was experimenting in the late ’50s, and the aluminum block was intended to be built without sleeves–like a Vega engine. The block was stamped 370, with a ’58 date, so it was before everything that Mickey was doing.
Can a Pontiac 350 be stroked?
Pontiac’s 350 shares the same external dimensions with its larger brothers. Heads–including Edelbrock’s popular aluminum castings–interchange. It uses the same 6.625-inch center-to-center Pontiac rods as the big motors, yielding a great 1.77:1 rod/stroke ratio, even with its relatively long 3.75-inch stroke.
Did Pontiac make a big block 350?
Pontiac differed from other GM Divisions and most other manufacturers in producing only a single small block V8, rather than adding a larger big block to its line-up. The external dimensions of all their V8s, from 326–455 cu in (5.3–7.5 L) were the same.
