Stage 1.5 107” kit

SHOP67 98”/107” Stage 1.5 Big Bore Kit

Take your Twin Cam to the next level with our SHOP67 98”/107” Stage 1.5 Big Bore & Cylinder Head Package!

Simply send us your existing cylinder heads and cylinders, and we’ll handle the machine work to get your combination ready for assembly.

Cylinder & Piston Package:

• Cylinders bored and torque-plate honed to 3.937”

• Forged 10.75:1 compression pistons

• Piston rings pre-fitted and gapped

• Cylinders and pistons returned ready for installation

Stage 1.5 Cylinder Head Package:

• SHOP67 Stage 1.5 performance porting

• CNC-machined combustion chambers

• Bronze tapered valve guides

• 1.900” intake valves

• 1.610” exhaust valves

• Performance beehive valve springs

• Valve spring pressures and installed heights set up for your camshaft of choice

Built for Performance. Matched to Your Combination.

Whether you’re building a strong street motor or looking to maximize horsepower and torque, we can help you put together the right combination.

Ordering Instructions:

After placing your order, please email shop67parts@gmail.com with your order number and completed engine build sheet.

Let us know your intended camshaft and whether you need any additional parts or assistance selecting components for your build.

SHOP67 PERFORMANCE

Horsepower With Attitude.