smokeum99ta
1/2 ton status
Oh ok different than sbc then. I’ll pull the valvecover to seeProduction blocks and heads either say “hi perf pass” or “truck”, sadly it doesn’t mean anything. All the passenger car and light duty truck stuff (standard deck height) says hi perf pass, the commercial level engines (tall deck) say truck - these have 4 ring pistons and a taller block deck height.
The head casting numbers will be between the valve springs.
















































































