Project: BLACK METAL - '67 Camaro

[67rally]

You are correct. I used a quick online calculator instead of writing it out and may have typed in a wrong number.

(231+235)/2 = 233
(2x108) = 216
233-216 = 17

You may have used 235/239 for the intake/exhaust? I remembered coming up with 21 degrees when I was looking at cams and thought that was a bit lumpy!

I made a little more progress. If my new cam retainer plate arrives by the weekend, then the new cam, timing chain, oil pump and heads are going on. Today I pulled the old heads, cleaned up the old head gasket and cleaned the pistons. I used brake cleaner and a soft bristled cup brush on my dremel, and they came out nice and clean. I taped everything off so I wouldn't end up with any debris in the engine. The flat top pistons confirm that this is an LQ9 motor. The LQ4 would have had dished pistons and lower compression.








And I forgot I put this bolt in when I was removing the crankshaft bolt last time. I put it there so the bolt would catch on the engine stand and allow me to loosen the crank bolt. Well, when I went to turn over the engine to clean the pistons, I got about a half revolution and the motor felt like it was seized. I backed it off and tried again and had the same result. I went into panic mode for a second, but remembered it turned over fine a few months ago. Well, long story short, the bolt was still there and doing exactly what it was supposed to do. Doh!:o