Looking for size (cc) of 2.2 - 2.7 heads

[edbaus]

I am trying to calculate out compression ratio for a set of pistons that I am ordering. Trying to figure out how much cc's I should build up in the dome to accomplish my target.

What I am in need of is if anyone has a value of the cc's of a 2.2 - 2.7L head.

Mine will be twin plugged, so I am not sure if that adds or subtracts from the overall cc's since there is a pocket for the extra plug, but the spark plug ends up protruding into the cylinder.

Also, I know I can look this up somewhere, but what is my target deck height for the piston.

Thanks

Ed

[jbell959]

Hi Ed... I'm in the middle of the same exercise building my 2.5SS motor. According to Henry, a 2.7 head is 69cc. I just measured mine and I got just under 69cc. Twin plug would add a tiny bit.

1mm seems to be the target deck height. I've seen others go down to .75mm to increase CR and up to 1.25mm to decrease it.

Hope this helps.

[edbaus]

Thanks. That helps. Do you also happen to know block height.

This is the dimension from the centerline of the crank to the top of the cylinder.

Thanks
Ed