Bigwilly6754
20+ Year Contributor
- 129
- 2
- May 28, 2002
Hey guys, I'm a little confuused with my current situation. Im trying to figure out how to tell the difference between a 4g63 and a 4g63T block.... becuase i just purchased a sloboy racing block and the casting number on the block just says 4g63. Im not sure if its supposed to have a T on it????