Thomason Machine Corp

Thomason Machine Corp Cylinder Head Machine Shop

Never had to deck plate a block to install pistons but here we are. 2019 GT350 voodoo block. Without the deck plate p...
05/14/2026

Never had to deck plate a block to install pistons but here we are. 2019 GT350 voodoo block. Without the deck plate piston to cylinder wall tolerance was .0003”. Feel free to read that again 😂. With the deck plate wall clearance jumped to .0011”. This is an OEM plus rebuild due to oil pressure failure. New OEM ford block had one cylinder .0005” smaller than the rest. Talking with Ford engineers allow for a .001” hone. I think we got very lucky that we’re within tolerance now. Minimum spec for wall clearance is .0006”

04/21/2026

The only guy in town with 6mm hardware. It’s not the size of the boat, it’s the motion of the ocean. 😂 Honda L15 head getting some fresh TMC. We also have a solution for heads warped beyond 4 thousandths that prevents cam/crank correlation codes.

04/18/2026

Just seats and guides, we have another full of valve stem seals. 😁

Honda 1.5L turbo head getting a little tmc.
03/26/2026

Honda 1.5L turbo head getting a little tmc.

03/23/2026

Never trust them three oh foes 😁

03/18/2026

Thank you Honda 😂😁

03/11/2026

Time for some seats!

03/06/2026

5L Range Rover getting some new intake valves after timing chain failure. hooked us up with some oversized guides since the valves busted 6 out of the 8. Off to the mill then we’ll set valve clearance and back to work.

03/04/2026

Brodix BR Series getting some chromoly valve seats thanks to along with si’s competition stainless exhaust valves. Every season is boost season here at TMC.

02/20/2026

Custom grinding shims for a Toyota 3.4L. This saves time over waiting for shims from the dealer and saves the customer a few bucks in the process. We call that a WIN WIN!

Address

140 Eisenhower Court
Nicholasville, KY
40356

Opening Hours

Monday 9am - 4pm
Tuesday 9am - 4pm
Wednesday 9am - 4pm
Thursday 9am - 4pm
Friday 9am - 4pm

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