Note: This Billet Valve Body fits ALL General Motors 8-Speed Transmissions, and fits BOTH early & late model versions.
The Project Carbon® Valve Body:
Welcome to the General Motors 8-Speed Valve Body by Next Gen Drivetrain™. The largest drivetrain problem in the General Motors 8-Speed community is undeniably the valve bodies. The valve body of the General Motors 8-Speed Transmission used in modern cars ranging from Escalades to Corvettes robs the car of both longevity and acceleration with lackluster and difficult to predict shifts. Due to these slow shifts, the car loses considerable acceleration potential during these critical changes of gear.
Further, these valve bodies are known to have extremely poor lifespans, often dying under warranty or immediately outside of warranty. When a valve body dies, it generally takes the transmission and torque converter with it, and is the cause of the well known “TCC Shudder” condition. This inferiority is caused by the General Motors “cost-cutting” design, and choice to use cheaper magnesium or aluminum components in lieu of steel or anodized aluminum alternatives that would simply cost more; out of step with the OEM's design culture.
In response, we brought our coveted Next Gen Drivetrain® valve bodies to accommodate the General Motors 8-Speed community. This valve body features a host of modifications designed to prevent internal pressure leaks and inefficiencies that generate heat, slow down shift-time and decrease transmission lifespan. This combination of factors ensures that this valve body will make a noticeable improvement for anyone from a daily driver seeking enhanced reliability, to an all-out track application and everything in between.
Do You Need Fast & Easy Financing?
Next Gen Drivetrain™ proudly offers fast, easy and affordable instant financing. You can finance your order straight from your computer or phone in as little as 5 minutes through companies like Affirm, Katapult & Shop Pay Installments. Some options offer as low as 0% APR! To learn how, check out our EZ Financing guide below:
> Next Gen Drivetrain™ Fast & Easy Financing Guide

A Valve Body for Everyone
At Next Gen Drivetrain™, we are well aware that not all customers are seeking the same desired end state. Some customers seek the ability to drive their Suburban 25,000 miles a year, some want their C7 to break 9 seconds in the 1/4 mile. What is common is the desire for crisper and more engaged shifts, a more confident driving experience and to rid yourself of the classic General Motors 8-Speed transmission fears we have all come to fear, dating back generations within the brand.
Fortunately, this product is designed for easy installation by virtually any shop or qualified technician. This valve body installs 100% drop-in to the inferior OEM valve body and requires no modifications or sacrifices to the vehicle's operability in any way, making this an excellent upgrade for any vehicle featuring a General Motors 8-Speed transmission.
This is a must-have for the following applications:
- Daily Driving
- Drag Race/Street Race
- Commuting
- General Enhancement
- Towing
- Decreased Transmission Maintenance Costs
This General Motors 8-Speed Valve Body will provide you with:
- Faster Shifting
- Crisper Clutch Handoffs
- Faster Acceleration
- Enhancement to Transmission Clutch Life
- Increased Clutch Holding Power
- Fixes Common Pressure Bleeds at High Temp/Pressure
- Permanent Fix to Common TCC Shudder
Project Carbon® Valve Body Features:
- Next Gen Drivetrain® Billet Accumulator Piston Set
- Next Gen Drivetrain® Recalibrated Accumulator Piston Springs
- Next Gen Drivetrain® Anodized Priming Valve w/ Seal Update
- Next Gen Drivetrain® Billet Pressure Regulator Valve (Plugs loss of pressure at clutches)
- Next Gen Drivetrain® Billet End Plug Set
- Next Gen Drivetrain® Billet Internal End Plug Set
- Next Gen Drivetrain® O-Ringed End Plug Update
- OEM Solenoid Set
- Next Gen Drivetrain® Billet Pulse Dampener Delete Kit
- Next Gen Drivetrain® Billet 1-2-5-6-7 Accumulator & Spring
- Next Gen Drivetrain® Billet Lower Valve Body Channel Plate
Conclusion:
The General Motors 8-Speed Billet Valve Body w/ PulseDelete™ is designed to encompass the best of what we have to offer; equally sufficing both the daily driving crowd, and the high performance crowd. Whether your priorities are longevity, performance, towing or otherwise, the Next Gen Drivetrain® valve body is the premier option! For more information, call in and speak to one of our experts.