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How much HP can you get out of a 307?

How much HP can you get out of a 307?

Combine these parts with a good 600 to 750 cfm Holley carburetor, an HEI distributor, and a set of long-tube headers and your 307 should make around 325 to 350 horsepower, perhaps even a bit more.

How do I add more power to my 350 engine?

How to Get More Horsepower Out of My Chevy 350 Small Block

  1. Modify your air intake.
  2. Modify your exhaust.
  3. Change your camshafts and valve train.
  4. Purchase new cylinder heads, or have yours ported and polished.
  5. Have your motor rebuilt and blueprinted.

How much can you bore a 307 Chevy?

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

Can you put Vortec heads on a 307?

Re: 307 and vortec heads The heads should work fine just dont put bigger valves in them. I have run heads with 1.94 intake valves on a 283 the vortecs should be fine on a 307 they have the same bore.

Can you put 307 heads on a 350?

For a 350, you’d be gimping it pretty bad with 307 heads. 305 heads would be a better choice than 307’s, the whole 307 engine was pretty lame. They will work, but will not be very efficient. Low power and crappy mileage.

Is a 307 a good motor?

As everyone has said, 307`s are a really great engine, but just never got the “rock star” status of the 327. I had a 307 in my very first vehicle – a 64 Chevy pickup with a 3 on the tree and 3.73 gears.

How much horsepower do headers add to a 350?

There was an immediate increase of 16 horsepower and a more dramatic increase of 53 foot-pounds of Torque after Chevy High Performance Magazine installed a set of Hooker heads on a stock engine.

Can you get 500HP out of a 350?

You “can” get 500HP out of a 350 BUT because it is a small cubic inch engine it IS going to be peaky and won’t have much torque. As soon as that chain gets stuck, it’ll bog down and stop because it doesn’t have enough “torque” to rip that chain loose to keep cutting.

Is the Olds 307 a good engine?

I get a lot of people asking me for suggestions to spice up their little 307’s, so I thought I’d write it down here. The 307 is a good engine–reliable, decent gas mileage, easy to find parts for, and it comes with a 4-bbl Quadrajet!

Can you put 350 heads on a 305 block?

Virtually any 350 heads will work on a 305. The high compression 350 heads are similiar in combustion chamber size & intake valve size to the 305 heads & will give a 305 the same performance as if using 305 heads.

How much horsepower can headers add?

In general, a quality set of headers should provide an increase of approximately 10-20 horsepower, and if you’re restrained with your right foot, you may even see an increase in fuel mileage.

Is there a way to make Chevy 307 more horsepower?

Of course, there are ways to make more horsepower by revving this smaller engine higher and by using big-port heads, but that does not fit within our goal of a mild, affordable street engine. With the physics established, the 307 will respond to all the same techniques that work on any engine to improve performance.

What was the horsepower of a 1968 Chevy 307?

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. Power When it was introduced in 1968 the 307 was rated at 200 horsepower at 4,600 rpm and 300 foot pounds of torque at 2,400.

Are there any limitations to a Chevy 307?

With the physics established, the 307 will respond to all the same techniques that work on any engine to improve performance. The only real limitation to making power is the small bore and this isn’t really that big of a deal.

What kind of head does a Chevy 307 have?

The stock iron 307 heads use a 70cc chamber while the Chevy Vortec heads are 64cc and the Summit Vortecs are 67cc. With a stock piston, we’ll assume the piston is 0.020-inch down from the deck, which is a common situation with ‘70s engines.