Stage 1 2004R
The Stage 1 was originally designed for the Buick Turbo car making less than 450HP. Cars that build power slowly (like turbo power).
This transmission works great for mild small block NA applications under 450HP or any Lower HP stock to mild applications.
The stage 1 was not designed for modified big blocks or torque monsters or Nitrous Engines that hit the torque curve like a sledge hammer. Guys are doing it but we do not
Stage 2 2004R
The stage 2 was built for cars from stock up to 750HP / 600ftlb TQ.
The stage 2 works great for Big Blocks, Hot SB, NOS Cars, Turbo cars up to 70mm and covers about 70% of applications.
Our most popular Stage in the EA™2004R line.
Stage 3 2004R
The stage 3 from Stock to 1000HP / 850TQ. The Stage 3 is the ultimate 2004R for Big Block, Nitrous Cars, Maximum effort 70mm Turbo cars.
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The Stage 3 will handle the power if you can supply it. Transbrake, NOS, 571 BBC, Blower Car "No Problem".
The Stage 3 has been one of our best sellers since 2010.