4 degrees BTDC/ Before Top Dead Center.
4 degrees BTDC.
The S10 pickup has the 5x4.75 bolt pattern.
bolt pattern for these model smaller chevy's is 5x4.75
3291
6 on 5.5
It sure will.
Will a 5.5 bolt pattern fit a 139 7
It just unscrews, It is real tight.
YES, They are the same engines. That would be a direct bolt in.
If it's the factory engine, then it will be a 2-bolt main engine.
YES it will bolt right on.
4 x 43/4