Hey guys, Im happy I came accross this forum because Ive already started to answer some of my questions but heres one more.

Is there a way to measure what my compression ratio is? Let me give you a little background on my car. This might get a litte long so if your not in the mood for reading you might stop here.

It had the 327 210 HP stock motor orginally then some time ago my dad had the engine rebuilt by some "profesional" who decided to leave the driveshaft out that ran from the distributor to the oil pump. Fired the engine up and hey no oil circulation. So we pulled the engine to find the problem and pulled the pan to check out all the crank bearings. We now get a ticking noise as well as some serious blow-by problems.

So Ive troubleshooted all I can and Im going to pull the engine again and fix/replace what I need to as well as add more power to the engine. (Wasnt happy with where it was at)So getting back to my original question I want to know or guess pretty close to what my compression ration is so I can select my parts accordingly. Since I didnt build the engine or select the parts myself I have no idea on some specifics put here is what I know.

327 engine block borred around .0030
Double hump heads, not sure of valve sizes
Cam shaft: not sure, Dad said something around a RV Cam
Edelbrock intake
Holley 4 bbl carb: not dp
Long tube flowtech headers

I'll start another thread on what I plan to do since this one is already to long.

Can't tell your compression ratio without knowing chamber size, gasket thickness, what kind of pistons, and how far down in the hole they are. Measure everything when you tear it down and post what you find. graemlins/thumbsup.gif

get the casting #'s off the heads, under the valve cover. "double hump" heads were not stock on a 210.

Yes the heads are definatly not the ones that came stock. i will pull the valve covers off this weekend and see what report what numbers I find.

Here is the casting number of the heads. 3917291

Camel Hump (fuelie) heads, 64cc chambers, no accessory holes, probably small valves, 1967-68 302\327\350.

which put's you just under 10:1 with 4 eyebrow flat tops, or near 11:1 with 1/8" domes, more or less.

Jim what do you think my compression is with a early 350 bored 40 over, stock length rods, flat tops pistons, gaskets from a Felpro KS2600 kit and Dart Iron Eagle S/S 165 heads with 72CC chambers?

Thanks