When you’re building serious power, precision isn’t optional—it’s the difference between a strong engine and a short-lived one. At Green Mountain Gear-Heads, we operate a fully equipped performance machine shop dedicated to Chevy, Ford, and Mopar platforms. From blueprinting blocks to perfecting valve seats, our machine work ensures your build performs reliably under street, strip, or track abuse.
Cylinder bores are the heart of your engine’s power and durability. We offer precision cylinder boring using modern CNC equipment to bring your block back to factory specs—or open it up for a big-bore build.
Our torque plate honing process ensures true roundness under simulated head bolt stress, holding tolerances to within a few tenths of a thousandth. This guarantees exceptional ring seal, better oil control, and the compression your performance build demands.
Head gaskets don’t stand a chance if block surfaces are uneven. We perform precise decking and block truing to correct warpage and ensure perfect sealing between block and heads. Whether you’re chasing high compression, forced induction, or simply restoring a vintage block, flat and true deck surfaces are non-negotiable for durability.
Misaligned main saddles cause bearing wear and oil pressure loss. Our align boring and honing services restore perfect centerline geometry across the main journals, ensuring smooth crank rotation and reliable oiling even at high RPMs. This service is essential for any performance rebuild or block restoration.
An unbalanced rotating assembly robs horsepower and destroys bearings. We balance crankshafts, rods, pistons, and dampers to high-performance specs, improving engine smoothness and longevity. Whether you’re building a naturally aspirated small-block or a boosted LS, balance is crucial for safely revving high and making consistent power.
Cylinder heads determine how your engine breathes—and leaks cost horsepower. We perform multi-angle valve jobs to maximize airflow while maintaining proper sealing. Our head resurfacing corrects warps and ensures optimal combustion chamber sealing. For performance or restoration builds, precision head work is key to reliability and power.
Engine blueprinting means measuring and machining every critical dimension to precise tolerances. We check bore centerlines, deck heights, crank endplay, bearing clearances, and more. Blueprinting transforms a good build into an exceptional one, delivering maximum efficiency, durability, and consistent performance across every cylinder.
Our machine shop has combined decades of experience machining small-block and big-block Chevy, Ford Windsor and Coyote engines, Mopar Hemis, and more. Whether you’re restoring a classic or pushing modern EFI builds to new limits, we deliver machine work trusted by racers, builders, and engine shops across Vermont and the Northeast.
Great engines don’t happen by accident—they’re built on precise measurements and meticulous machining. Green Mountain Gear-Heads is dedicated to delivering high-tolerance work that stands up to real-world abuse. From mild street rebuilds to full race preps, our machine shop gives your Chevy, Ford, or Mopar the rock-solid foundation it deserves.
Green Mountain Gear-Heads primary focus is on domestics, but can sometimes support non domestic builds.
8 AM - 5 PM
Monday - Friday
85 Shunpike Rd, Williston, VT 05495