A usable core is required due to the dwindling supply in the market. If you select the option to send in a core, we MUST receive it BEFORE your order can be started. If you don't have a core, a $100 charge will be required for us to supply one.
The C4 Manual Valve Bodies offered by DYNAMIC Racing Transmissions- both with and without trans-brakes- have long been recognized for their superior performance and product reliability.
But along with the many sales and happy racers these components have produced, we often get a special request. That request is for a forward shift Manual Valve Body assembly - without giving up the quality normally associated with DYNAMIC's valve bodies.
So, Dynamic's owner, Harold Miller, set out to design a new unit that would meet these requests. After several weeks at the workbench and a few hours on the dyno it is now ready!
The new valve body has multiple benefits:
- Ease of use: Anyone used to a standard fwd. shift pattern does not have to worry about relearning.
- Normal pattern shifters or at the least- shift gates- need not be replaced.
- Low Band Apply is retained to utilize engine braking on deceleration in 1st gear.
- It also lends itself well to other types of motorsport, as it features low band apply and engine braking- in all forward gears.
Stock vacuum modulator must be retained but does not need to be connected to manifold vacuum.
Kickdown linkage must be disconnected or removed.
What's the difference between the Dynamic Forward Manual Valve body and a valve body modified with the Transgo kit?
The Transgo kit is fine for a street driven vehicle when you wish to have the capability to reverse the modifications back to stock. It compromises on the line pressure making it a bit softer on shift changes and requires the vacuum modulator be connected and functional.
The Dynamic unit is purpose built to be a Forward Manually controlled valve body,perfect for spirited street driving, off roading and racetrack performance. Our line pressures are set to 210-250 psi, giving the best in shift feel and increased clutch pack clamping for more performance. It utilizes a custom separator plate, special machining and a CNC machined manual valve.
