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depends on what year it is, if it's been built for performance, kind of heads....lots of different compressions. usually for an early built engine somewhere in the ballpark of 8.5/1 up to 10.5/1. good luck with that!

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โˆ™ 2005-11-30 15:35:37
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Q: What is the compression of a 350?
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Related Questions

What is Compression specs for 1974 nova 350?

Compression ratio on a 1974 Chevy 350 in a Nova was 8.5:1.

What is the compression ratio of a 1974 Chevy 350?

8.5 to 1 compression is factory stock.

350 Chevy compression?

The compression ratio of a 350 Chevy engine usually ranges from 8.0 and 9.0 to 1. This provides a good balance of fuel economy and power.

What would happen to the compression if you put a 260 on a 350?

A 260 what, on a 350 what, might help us answer that.

Will 350 heads on a 305?

Not a good idea. 350 heads will lower compression to 7 to 1 or less.

What is the compression on a 1982 small block 350?


What is the compression for a stock 1972 Chevy 350?

About 8.5 to 1

What is the compression ratio of a 1968 350 engine?


What is the compression ratio of a 1968 Chevy 350?


What if Chevy 350 cylinder compression is 115 psi to 135 psi?

then youre running about 8.5:1 compression

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How do you identify air leak small block 350?

A compression test.

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The average compression test reading for a Chevy 350 small block engine is around 150 PSI. Lower pressure indicates that there is a leak in the engine.

Why would the compression be low on 5 cylinders of a 350?


How much horsepower is in a 350 with a 292 cam?

I had one with 10:1 compression that was making close to 350 hp with decent heads.

What is the compression in a stock 3970010 350?

The 3970010 number on a 350 was found on the back of your block. Its a base number for that cubic inch motor. Its been there on multiple years of 350. It is also used for all kinds of applications from light cars to heavy duty trucks. all with different compression. There is no way to get compression ratios with that number. Use the number on the front of the block by the head. It will give you year, make and model of the car it was put in and you can track down your compression numbers from there. What you want to see is the compression reading of all the cylinders be within 15 psi of each other.

Can 305 cyl heads go on 350?

Yes, but it increases compression a full point.

Do 350 heads on a 305 help?

No. It lowers the compression ratio and reduces power output.

Engine stroke for 350 Chevy small block?

4.000x3.750 with 8.5:1 compression

How do you get 400 hp from a 350 Chevy?

Good compression, good heads, good cam.

Why does a Chevy 350 have low compression on adjacent cylinders?

If any two adjacent cylinders have low compression it's probably caused by a blown head gasket.

Will 307 heads bump up compression on 1970 350 block?

it all depends on the head chamber volume of the 307 heads and the 350 heads that are being replaced. if the 307 heads have a smaller chamber volume then yes, they will bump up compression.

How do you determine the compression stroke on a 350 Chevy engine?

Remove all the spark plugs and turn the engine over by hand. Place your thumb over the #1 plug hole and you will feel the pressure on the compression stroke. A compression gage will also tell you when you are on the compression stroke.

Why does my Yamaha wolverine 350 run good yet have no power?

Has no compression needs new rings