A good bore job around here costs $40 to 50 per hole for 4 stroke, and $50-60 per hole for a 2 stroke (2 strokes are more because of the time required to chamfer the ports).Click to see full answer. In this manner, how much does it cost to bore an engine block? BES Machine Shop Services • Balancing • Crank Grinding • Engine Dyno • Flow Bench • Head Porting • Sheet Metal Intake Fabrication Bore & Hone Block Hone Block V8: $275 $130 V6: $245 $125 Inline 6: $230 $125 Subsequently, question is, what are the benefits of a stroker motor? Big stroker engines have several other advantages too. They can produce more performance than smaller engines without breaking a sweat. Moderate compression ratios and mild cams allow professional bracket racers to race all year long with little maintenance to their engines. Just so, how much does it cost to bore ATV cylinder? most places (if you use your cylinder, not a replacement one thats already bored) will charge 40-70$ then the cost of a new piston, and rings. i’d safely say 70$ for boring, 50$ for a new piston, and 20-60$ for new rings. they’d probably hit you for 100$ if they had to reassemble the engine.What does it mean to bore an engine 30 over?030 over it usually means it’s been rebuilt once, but not always. It also adds cubic inches to the displacement, a 350 bored . 030 over is 355 CI. 30 over on a stock bore 350 gives you 5 more cubic inches.