Fine Motor Skills LLC

Fine Motor Skills LLC Fine Motor Skills LLC buys and sells cars to fund "What If Builds".

These builds represent what we think the factory should have built given the available power plant combinations at that time.

08/31/2026

The cam bearing installation saga continues!

08/28/2026

If you build it, they will come...

08/16/2026
08/14/2026

GM LS & LT ENGINE MACHINING

Building an LS or LT?

We specialize in GM LS & LT engine machining, from cleaning and inspection to complete precision machining and assembly. We can handle the machine work from start to finish. Over 25 years of experience in engine machining.

***ENGINE PARTS & COMPONENTS
We sell a wide range of engine parts and components to support your build from start to finish***

CLEANING & INSPECTION
• Hot tank cleaning
• Spray cabinet cleaning
• Bead blasting
• Magnaflux crack inspection
• Spray penetrant crack detection (aluminum)

CYLINDER HEAD MACHINING
• Valve guide inspection & measurement
• Bronze valve guide liner installation
• Stock valve guide replacement
• Precision guide honing
• 3-angle performance valve jobs
• Cylinder head resurfacing

ENGINE BLOCK MACHINING
• Block cleaning & inspection
• Precision block resurfacing
• Cylinder boring
• Torque-plate honing
• Cam bearing installation

CRANKSHAFT & CONNECTING RODS
• Crankshaft grinding
• Crankshaft polishing
• Connecting rod reconditioning

PRECISION ENGINE ASSEMBLY
Have us take it all the way from a bare block to an assembled engine. All clearances are measured and verified during assembly.

LS & LT ENGINES ARE OUR SPECIALTY.

Bring us your complete engine, bare block, cylinder heads, crankshaft, or rotating assembly and we'll help you determine exactly what it needs. We stock several cores for sale if needed.

Stock • Street Performance • Race • Boosted Applications

Message us for pricing and availability.

Additional photos available upon request.

706, 862, 317, 243, 799, 241, 5364, 823, 821, 6.2, 6.0, 5.7, 5.3, 4.8

05/16/2025

Check out our modified Storm Vulcan 85B! This machine is used to deck heads and blocks. we upgraded the automatic traverse to be adjustable via a solid state...

06/01/2022

G-Body 3" exhaust kit from Pypes going into our 1984 Cutlass. Installation video coming soon!

We can relate! What's your favorite yard?Nothing beats a day at the yard searching for treasures! ...
12/13/2021

We can relate! What's your favorite yard?Nothing beats a day at the yard searching for treasures!

We picked up this LS4 and can't wait to put it in something that needs a transverse LS! What should we put it in? #5.3 ...
12/07/2021

We picked up this LS4 and can't wait to put it in something that needs a transverse LS! What should we put it in?

#5.3

Address

Lake Saint Louis, MO
63367

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