Well here is the deal my Dad and I are going to build an engine for the vette just something with a little more power. My dad is the brains of the engine building and we have decided to make an atempt to CC a set of heads and i was wondering if anyone out there could recemmend a company to buy the Equipment (burette and plates) from. And any other informtion is welcome
thanks
Doug

 

whats the casting numbers on the heads, you can usually find out what the CC is on chevy heads, or are you gonna mill 'em Ebay has some cheap stuff that might do the trick for at home work

 

Hi 74, I was able to c.c. mine with very little cash outlay. I used a 60 c.c. plastic syringe ( wife is in medical field ), bought a piece of 1/2 in. clear acrylic plate for $3.00, drilled the plate so I could bolt it to the head through the head bolt holes and presto - one c.c. kit. I started out wanting to c.c. mine just to determine the compression ratio before I put the motor together, I found a two c.c. difference between the heads, both have the same casting # but one is a 1971 and the other a 1972. Some of the books I have also said that GM was still changing the head volume between years to meet emissions. So a little milling on the 76 c.c. head brought it down to 74 c.c. to match the other. I used water as the measuring fluid, you will want to measure more than once to get a good feel for the accuracy. You can use a light oil like tranny fluid but things tend to get messy.

 

Did the same thing with a friend's 427. Also used water w/ a little food coloring to make it easier to see as it filled up. Only difference was we used a piece of plastic that just covered one combustion chamber and sealed it to the head with a light film of grease. Probably not as accurate as yours but we were just looking to get a rough idea of CR.

Somebody once said "Necessity is the mother of invention"

 

Thanks for the info guys. I have done a little hunting around on the internet and i found this kit http://www.precisionmeasure.com/block15.htm
Has anyone ever heard of Percision Measuring? Any feedback on them or the kit?

 

I'm too cheap to spend that kinda' money on something I may never use again, if your going to be doing a lot of head work then it would be justified, it all depends on how much your willing to spend and what end result your after. For me I achieved exactly what I set out to do with a couple of dollars and a little time.

 

I agree w/ 78buckshot . About the only difference I can see between the way we did it and that rig is probably a little accuracy. And oh yeah, $150.