not Imitation

4,500+HP Full Water jacketed PROVEN endurance pro Mod engine!

NOT just for cooling in between rounds

This is real world drive this engine anywhere even on pump gas!

The first testing of the SMX engine!

Tom Bailey breaks the barrier going 5.99 at 250 MPH !!

After Driving close to 1000 Miles in 98 degree heat and stop and go traffic!!

New Updated Time 5.77 @ 259.66 !!! STREET CAR

still in drag week mode and not even freshend up yet!

In January 2018 I decided I needed to build the first fully water jacketed all billet engine that could utilize all the rock solid proven parts of the 481X! After 1 1/2 years of development I am proud to release the SMX engine. 

This Engine uses all of the 481X common parts like valve train, cranks, sleeves, cams, lifters, intakes, gear drives, everything, all the readily available parts the ProMod guys use and have on hand.

You must use our block and heads together because I have moved 1 bolt hole from the common 481X

Rock solid, bullet proof and Proven now with water jackets for all other applications that need water cooling! 

(Below is NOT the final cooling passages)

1) Long Block Engine packages available 

2) Complete Super Charged Engine packages available 

3) Complete Turbo Charged Engine packages available 

4) N/A and N2O combos also available 

Call for you specific pricing on a package built specific for you! 

MASS Amounts of Water SMX Block

Oil drain back ports in the block for heads and turbos

Lifter options available 

Splayed cap design to add strength from bulk head. 

MASS Amounts of Water SMX Heads 

All Common 481X valve train fits 

Click Here to see SMX dyno videos!