How much horsepower does a 307 olds have?

From 1980 until 1990, Oldsmobile made a 307-cubic-inch, eight-cylinder engine that was capable of producing between 140 and 180 horsepower. The 307 went into nearly all ’80’s Oldmobiles, including the Delta 88s, Cutlass/442, 98s and Toronados.

How much horsepower can you get out of a 307 Chevy engine?

Chevrolet produced the 307 from 1968-73, which means there are a lot of cores out there waiting to be rescued and built. Chevrolet never did a high-performance 307 like it did with the 283. Right off the assembly line, the 307 delivered 200 horsepower and 300 lbs. -ft.

Is the 307 a good engine?

For a stock-bore 307 with a mild 262/270 cam, aluminum 170cc heads, electronic ignition, and a strong 600-cfm carburetor, that’s nothing to be ashamed of. For a lighter vehicle, this is a perfect engine to stick under the hood.

Is 307 a big block?

Introduced in 1968, the 307 was a typically muscle-car-era response to squeezing more power out of a small displacement engine. Essentially a 283 block with the crankshaft and rods from a 327, the 307 served duty as Chevrolet’s smallest small-block V8 until it was replaced by the 305 in 1973.

What did the 307 come in?

The Chevy 307 V-8 engine was introduced in 1968 to replace the Chevy 283 V-8. This engine was designed to function well in low-performance vehicles such as sedans and other family-friendly cars. This engine only lasted five years, with the last model being produced in 1973.

Did Buick make a 307 engine?

The 307 cu in (5.0 L) was an Oldsmobile V8 engine shared with Buick: 1980–1985 Buick Lesabre.

What is the difference between a 305 and 307?

307 uses a 3.25(same as 327). the 305 uses a 3.736″ bore where as a 307 uses a 3.875 bore. a 305 is basically a destroked 350 and a 307 is basically a stroked 283. all the bolt on parts such as heads,intake, oil pan,water pump,cam,timing chain, etc, etc will interchange as it will with basically any other small block.

Why are Buick engines called nailheads?

Gearheads nicknamed the new V-8s nailvalve or nailhead motors because the intake and exhaust valves were relatively small in size and installed vertically.

How much can you bore a 307 Chevy?

Hey, . 60 over is as far as you can bore the 307 block.

What’s the difference between an Olds 307 and a 307?

Now, to thoroughly confuse you, Olds made two different version of each of these engines. Up through Mid-85, 307’s had normal 5A cylinder heads and normal hydraulic flat-tappet lifters. In Mid-85, GM changed over to a 307 with 7A cylinder heads and a hydraulic roller-lifter drivetrain.

How do I know what version of 307 I have?

In Mid-85, GM changed over to a 307 with 7A cylinder heads and a hydraulic roller-lifter drivetrain. The 5A heads seemed to appear for a while after ’85 in the VIN 9 engine, but there are 7A headded VIN 9 engines too. To see which version you have, look for the number on the front of each cylinder head.

What year did the 307 get 5A heads?

In Mid-85, GM changed over to a 307 with 7A cylinder heads and a hydraulic roller-lifter drivetrain. The 5A heads seemed to appear for a while after ’85 in the VIN 9 engine, but there are 7A headded VIN 9 engines too.

Is the 307 a good engine to buy?

The 307 is a good engine–reliable, decent gas mileage, easy to find parts for, and it comes with a 4-bbl Quadrajet! Some of the recommendations are from personal experience, some have been recommended by others, all have been tested and proven.