| Turbo 400 Extreme Spragless |
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| The Beating Heart of the Extreme TH400 |
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| The Extreme Spragless Is the strongest Turbo 400 on the planet. 6.29 @ 221MPH
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All Extreme Spragless 400s
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Only select cores are used
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Griner Billet Alum Extreme Spragless VB W/Pro Tree Brake
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Case is media blasted and preped for Racing
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All New Bushings
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All New Torrington Bearings
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Rear Case Torrington Thrust
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Case Modified for Maximum Fluid Flow
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New HD Output Shaft
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Gear Set Rollerised Thrust
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2.48 Gear Set New Pinions and Thrust Washers
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Spragless Technology
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Pressue Regulated System to Prevent Engine Thrust Wear
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Extreme Stage 1 1300-1500 HP
- Items Included in Extreme 400
- Griner Pro Tree .000 Release Trans Brake
- Hytuff Input Shaft with Special Design Oversize spline
- Torsinal Main Shaft
- Roller 2.48 Gear Set
- Harden Stator Support
- Intermediate Snap Ring case Support
- Billet Clutch Hub
- Deep Pan
- Hi Flow Filter
- 1 Year Warranty
$2795 + Shipping Web Store
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Extreme Stage 2 1500 - 1800 HP
- Items Included in All Extreme 400s
- Griner Pro Tree .000 release Trans Brake
- Vasco Input Shaft
- Special Design 300M Mainshaft
- Maximum Duty Clutch Packs
- Rollerised Direct Drum
- Billet Clutch Hub
- Intermediate Snap Ring Case Support
- Deep Cast Aluminum or Derale Cooling Tube Pan
- 2.48 HD Gear Set
- Hi Flow Filter
- 1 Year Warranty
$3295 + Shipping
The Extreme Spragless is a custom built unit. We Build these units to order. Please allow 4 to 6 weeks for delivery!!!!!!!!!
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| Extreme Billet 2.10 Straight Cut Gear Set |
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| Stage 2 Extreme TH 400 |
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Extreme Stage 3 2000 + HP
- Items Listed is All Extreme 400s
- Vasco Input Shaft
- Aircraft Quality CNC 7075 Aluminum Forward Drum with 4340 Steel hub
- CNC Over Size Input Spline
- Vasco Main Shaft
- Billet Forward Clutch Hub
- Aircraft Quality CNC 7075 Alumium Direct Drum
- Billet Harden Stator Support
- Special Design Pressure Regulator System Adjustable 150-250 psi
- HD 2.48 Gear Set
- Maximum Duty Cluch Packs
- Super Pump Assembly
- Rollerised Direct Drum
- Deep Cast Aluminum or Derale Cooling Tube Pan
- Hi Flow Filter
- 12 -14 lb lighter rotating mass
- 1 Year Warranty
$3995 + Shipping
The Extreme Spragless is a custom built unit. We build these transmissions to order. Please allow 4-6 weeks for delivery!!!!!!!!!!!!
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Options All Spragless models
Safe Neutral $100
2.48 Straight Cut Gear Set $395
2.10 Gear Set $1295 Helical
2.10 Billet 6 Pinion Straight Cut Gear Set $1850
CNC Forward Drum W/Vasco Input Shaft $395
CNC Billet Aluminum Forward Drum W/4340 Steel Hub and Vasco Input $595
Sheet Aluminum Pan $140
Billet 4340 Output Shaft $595
Boost Builder Stall Control $695
JW Ultra Bell GM $295
JW Ultra Bell Most Other $395
VSS Package for GM and Ford $275
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Turbo 400 Extreme is the strongest fastest Turbo 400 on the planet. The Extreme Spragless Technolgy has been 6.40 @221. The other guys make claims of being the fastest but that record was shattered. Here is why the Extreme is the strongest unit built.
The most common failure in a Turbo 400 is the 2nd gear sprag. This is a mechanical part has to stop the direct drum turning in the opposite direction of transmission rotation the instant the 2nd gear is engaged. Imagine a 9lb drum turning at engine RPM and has to be stopped instantly. What typically happens is the sprag will wear and break or flip over causing a loss of 2nd gear. This will happen from a stock 400 to Hi HP units. The industry for years has worked to improve the problem GM built into the Turbo 400. The industry solution was to use a larger sprag out of a front wheel drive GM transmission referred to as (Super Sprag). This sprag is larger and has more surface area and it does extend the HP limitation of the 2ng gear sprag. The problem is the Super Sprag is still a mechanical part, it still wears and fails only at a higher HP level. No one seems to know what HP level this new sprag is reliable. When you shock a mechanical part it will fail period. That's what happens every time you pull the shifter on your 400 into 2nd gear.
Steve Griner came up with the solution. If the sprag is a mechanical part. It wears and fails due to shock load. How do we permanently fix it. We remove the sprag from the transmission. No sprag = No sprag Failure. The Turbo 400 Extreme is a Spragless 400 transmission. That's right!!! There is no sprag to break. The clutches will handle all the shock you can throw at them. You shock the clutch pack it will slip grab and go down the track. You shock a mechanical part it will explode. The Heart of the Extreme 400 is the valve body built for Extreme Automatics by Griner Engineering. Steve Griner started from a block of aluminum billet and a clean sheet of paper. The other guys are still modifying the 40 year old GM cast iron valve body. With the new Valve body the sky was the limit. We removed the 2nd gear sprag, Improved direct clutch life and designed the fastest shift time in the industry. All this was topped off with a Pro Tree .000 release time Griner trans brake the fastest in the industry. The spragless technology has been tested for years in 10,000lb Fuel Blown monster trucks where no sprag has ever survived. These trucks must be shifted up and down in and out of 2nd gear at full throttle. That's some serious punishment. Imagine a 10,000lb truck. On the Dragstrip the spragless has been 6.21 at over 230 in the quarter when the other big names 400s failed. If you are looking for the strongest 400 on the planet with the latest innovation The Extreme Turbo 400 is for you.
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