Originally Posted by Camaro_Nut2001
Got the motor and trans out tonight and I've got to make an appointment with the eye doctor ASAP. The casting number is "3956618" and the number stamped on the front pad is "V0331HN" which is showing up as a 1969 350 300HP passenger car. Also, it doesn't have a steel crank like I originally thought when looking at the end of the crank while under the S10. Even though it's not a 302, it's found it's home till I leave this world. The heads are "186". I also thought it looked like it had never been opened up but after gettin it out so I could really look at it I think with 98% certainty that it has been opened up. I didn't pull the pan, just one valve cover as my body was really going down on me fast. I'm taking tomorrow to myself and spend the day riding in my Impala so hopefully Monday I can get back at it. I wish everyone a very happy Thanksgiving.
The heads are likely original to the engine. It was rated at 10.25:1 CR but the actual CR is prolly in the 10:1 range. Give or take.