FTI Performance 700R4 Level 2 Transmission (FT7R4-2H) | Ultimate Product Guide

The FTI Performance FT7R4-2H is a professionally built Level 2 700R4 transmission engineered to reliably handle up to 450 horsepower and severe street/strip duty. This isn’t a simple rebuild; it’s a comprehensive performance upgrade that addresses the well-known weak points of the stock GM 4L60/700R4 transmission. FTI transforms this popular overdrive unit into a durable, high-performance powerhouse capable of handling aggressive driving and high-torque applications.

Every transmission is dyno-tested prior to shipment, ensuring you receive a proven, turn-key solution. Designed for enthusiasts with modified street machines, hot rods, and restomods, the FTI Level 2 package delivers the perfect balance of brutal strength and streetable manners, all while retaining the coveted overdrive for highway cruising.

Detailed Technical Specifications

Key Performance Upgrades (Included):

• Billet 300M Input Shaft: Replaces the weak stock shaft that is prone to spline twisting and failure.

• Billet 300M 4th Gear Servo: Eliminates the “4th gear walkout” failure common in high-horsepower applications.

• Beast Sunshell: The strongest aftermarket sunshell available, preventing the catastrophic failure of the stock unit.

• High-Energy Wide Clutch Packs: Increases torque capacity and improves heat dissipation in the 3-4 clutch packs.

• Performance Corvette 2nd Gear Servo: Provides firmer, quicker 1-2 and 3-2 shifts.

• Heavy-Duty Roller Clutch: Upgraded unit for increased strength in reverse and manual 2nd gear.

• High-Capacity Deep-Dip Transmission Pan: Increases fluid capacity for better cooling (often included).

• Dyno Testing: Each unit is run on a test stand to verify operation and pressure settings before shipping.

FTI Level 2 vs. Stock & Other Builds: Comparison Table

This table highlights the transformative upgrades of the FTI Level 2 build.

Frequently Asked Questions (FAQ)

Q1: What is the difference between Level 2, Level 3, etc.?
A: FTI uses levels to categorize their builds:

• Level 2 (This Unit): For serious street/strip use up to 450 HP. Includes billet input shaft and beast sunshell.

• Level 1: A solid street upgrade for near-stock applications.

• Level 3 & Above: For race applications (e.g., dedicated drag cars) with manual valve bodies, trans brakes, and even more billet components.

Q2: Do I need a new torque converter?
A: Yes, it is highly recommended. You should pair this transmission with a performance torque converter matched to your engine’s cam and powerband. FTI typically recommends a 2400-2800 RPM stall speed converter for this Level 2 build to maximize acceleration without sacrificing too much street manners.

Q3: Will this transmission work with my stock computer (TBI/TPI)?
A: The 700R4 is electronically controlled. This transmission will physically bolt in and function, but for optimal performance and shift points, the transmission pressure should be adjusted via a vacuum modulator or an aftermarket electronic controller to match the increased line pressure of the performance build.

Q4: What is required for installation?
A: You will need:

• A compatible performance torque converter.

• The correct crossmember and driveshaft for your vehicle.

• Transmission cooler lines and a large auxiliary transmission cooler (mandatory for performance use).

• Your vehicle’s TV (Throttle Valve) cable/c linkage MUST be correctly adjusted. Incorrect adjustment is the #1 cause of failure.

Q5: What does the warranty cover?
A: Reputable builders like FTI offer a limited warranty (e.g., 12-24 months). This typically covers defects in materials and workmanship but requires professional installation and proof of a large external cooler. Always read the specific warranty terms provided by FTI before purchase.

Q6: Is there a core charge?
A: Yes, there is almost always a substantial core charge. You must return your old, rebuildable 700R4 core transmission to receive a refund of the core charge.

Pros and Cons

Pros:

• Eliminates Known Weak Points: The billet input shaft and beast sunshell solve the two most common catastrophic failures.

• Proven Power Capacity: Rated for a true 450 HP, making it perfect for moderately built small blocks and LS swaps.

• Dyno-Tested: Arrives as a known-good unit, eliminating guesswork and initial setup issues.

• Retains Overdrive: The 0.70:1 overdrive gear drastically reduces engine RPM at cruise, improving comfort and fuel economy.

• Expert Build Quality: Built by specialists who understand performance transmission needs.

• Warranty: Comes with a legitimate warranty for peace of mind.

Cons:

• Higher Cost: Significantly more expensive than a DIY rebuild kit or a standard junkyard transmission.

• Core Charge: Requires a refundable core, adding complexity to the purchase.

• Additional Parts Needed: Requires the purchase of a matched torque converter and cooler.

• Professional Installation Recommended: Correct TV cable adjustment and installation are critical to avoid immediate failure.

Conclusion & Best Applications

The FTI Performance FT7R4-2H Level 2 Transmission is the ideal solution for anyone who has outgrown the limits of a stock 700R4. It is the definitive choice for enthusiasts who want brutal acceleration without sacrificing the practicality of an overdrive.

You should choose this transmission if:

• Your vehicle makes 350-450 horsepower.

• You want to cruise on the highway with low RPMs (thanks to overdrive).

• You demand ** reliability at the strip** or during aggressive street driving.

• You want a turn-key solution without the hassle and risk of a DIY build.

For a proven, durable, and high-performance overdrive transmission, the FTI Level 2 build is an outstanding investment.

Disclaimer: Professional installation is highly recommended. The TV cable MUST be adjusted correctly to prevent instant transmission damage. An external transmission cooler is mandatory. The warranty is void if used for racing without a trans brake or if improperly installed. Always confirm the final specifications and warranty terms with FTI Performance or your authorized retailer.