Hey all, I am new here just wanted to see if anyone could tell me what I have, and how to get the most out of it.... Casting 447344 YX block, 7j2 heads. I was playing this weekend, and I couldn't get any rubber, just took off then around 50 she kicks in, anvanced timing a bit, now getting about 100'of smoke i guess that helped. What are the specs for this engine and heads???? What should i do to make it better???? Oh yea its in a 69 coupe with a th400