az88k5
1/2 ton status
Here are the numbers:
10066036
99 on top next to top tranny bolt.
Need Help Identifying Crate 350! Year? 4 bolt or 2 bolt main? Light, Medium, or Heavy Duty? Horse Power? Let me know the answers to my questions GM enthusiasts
10066036
99 on top next to top tranny bolt.
Need Help Identifying Crate 350! Year? 4 bolt or 2 bolt main? Light, Medium, or Heavy Duty? Horse Power? Let me know the answers to my questions GM enthusiasts

How can I find out the year? Is this a 4 or 2 bolt main?