8HP Build Packages & Build Paths

8HP Build Packages & Build Paths

A ZF 8HP build is rarely one part. It is a gearbox, a control strategy, an engine interface, a converter and a driveline that all have to agree before the car makes a clean pull. This page is where the build packages and the options that go inside them sit, so you can move from "I think I need an 8HP" to the exact box, stage and hardware your project needs.

If you have not chosen the transmission code yet, start with which 8HP transmission to buy, then come back here with the code, the engine and the torque target in hand.

Start with the code, not the badge

8HP45, 8HP50, 8HP51, 8HP70, 8HP75, 8HP76 and 8HP90 are different boxes with different internals, converters and output arrangements. The stage you need follows the torque you intend to make and the way you intend to control it, not the model name on the boot lid.

Built8HP stages: Stage 1 to Stage 3+

Built8HP is the built-box line: an 8HP core stripped, checked and rebuilt to a defined stage. Each listing states what is included at that stage, so compare the listings rather than guessing from the name.

Tell us the engine, the torque you are actually targeting and how the car will be used (street, drag, drift, circuit) and we will point you at the stage that suits the build instead of the most expensive one on the page.

Billet options that go inside the build

These are upgrades specified with a stage, not instead of one. They are listed separately so you can see exactly what is being added to the box.

Dodson build packages

Dodson builds are specified by torque target. The package name carries the rating and the listing carries what is inside it.

Installation, labour and complete conversion packages

Some projects need the box built and fitted, not just supplied. These listings cover the workshop side and full conversion packages.

Build paths by engine and chassis

The fastest way to price a package is to start from a build that already looks like yours. These pages cover the common platforms and the parts decisions that go with them.

What to confirm before you order

  • The transmission code and the tag on the gearbox, not just the model it came out of
  • Engine, bellhousing pattern and starter arrangement
  • Which controller and harness will run it, and who is calibrating it
  • Converter choice, and whether it is supplied or reused
  • Output flange, driveshaft and the diff side of the driveline
  • Cooling: cooler size, lines, thermostat and where the heat goes
  • Shifter and electronics: paddles, sequential, or a factory selector

Freight, lead time and what is included are confirmed on each listing before you order. If any line above is still open, ask first. Getting the package right before the box is built is cheaper than correcting it afterwards.

8HP build package questions

Do I need a built 8HP or will a stock gearbox do?

A stock 8HP is the starting point for most swaps. A built package is specified when the torque target, the way the car is used or the converter sits outside what the standard box and calibration are being asked to do. If you are not sure, tell us the engine and the torque target and we will say plainly whether a build is needed.

Can I buy the build and the gearbox together?

Yes. The gearboxes we have listed are priced with their recorded mileage. If you need a specific code, or a donor that is not currently listed, ask and we will tell you what is available rather than guess.

What does the stage number actually change?

Each stage adds specific internal hardware. The listing for each stage states what is included, and higher stages are built for more torque and harder use. Compare the four listings side by side, and ask if you want the difference between two stages spelled out before you commit.

Do you fit the box or supply only?

Both paths exist. The installation and labour listings cover the workshop side. Supply-only is normal for customers who already have a builder, and we will still confirm the controller, converter and driveline plan with you.

Not sure which stage your build needs?

Send the engine, the gearbox code you are working with and the torque you are targeting. We will tell you which package fits, what else the conversion needs, and what it will take to get it to you.

Ask about your build See listed gearboxes

Keep planning the conversion