Naturally Aspirated - Uratchko Racing Engines
Was looking for information inside the Box, not found.... They do, however, give good instructions how to measure clearance.
Piston is for 4.125" bore. Has skirt coating. 1.2/ 1.2/ 2?mm rings. Block is aluminum w/ cast liners. Dragracing With most probably 110 octane.
Appreciate input- going...