Upgrade Your 1947–59 Chevy Truck with the CPP 4759ETX-K Drivetrain Install Kit

Swapping a small-block Chevy engine into a classic truck is one of the most popular ways to add dependable power and modern drivability. However, the engine and transmission must be mounted securely and positioned correctly before the rest of the build can come together.

The CPP 4759ETX-K Engine and Transmission Install Kit provides a coordinated mounting solution for 1947–59 Chevrolet trucks. By packaging the engine crossmember, transmission crossmember and rubber mounts together, the kit helps simplify one of the most important stages of a classic truck drivetrain conversion.

A Complete Foundation for Your Drivetrain Swap

An engine swap involves much more than placing an engine between the frame rails. The drivetrain position can affect steering clearance, exhaust routing, cooling-system space, driveshaft alignment and transmission-tunnel clearance.

The CPP 4759ETX-K gives builders a solid starting point by including the main components needed to support both the engine and transmission.

The kit includes:

Engine crossmember
Transmission crossmember
Two small-block Chevy rubber motor mounts
GM-style rubber transmission mount
Engine mounting perches
Installation hardware

Using these components as a package can reduce the time spent matching unrelated crossmembers and mounts from different sources.

Built for 1947–59 Chevrolet Trucks

The 1947–59 Chevrolet truck platform covers two of the most recognizable eras in classic truck design: the Advance Design trucks and the early Task Force series.

These trucks remain popular for restorations, street builds and restomod projects, but many still use original drivetrain configurations that may not meet the expectations of modern drivers.

Installing a small-block Chevy engine can provide:

Greater parts availability
More power potential
Easier serviceability
Expanded transmission choices
Improved highway capability
A familiar Chevrolet-based drivetrain

The CPP 4759ETX-K is intended for straight-axle truck applications, making it a useful solution for builders retaining this type of front chassis configuration.

Engine Crossmember and Rubber Mounts

The engine crossmember provides the structural mounting point for the small-block Chevy engine. Its tubular design spans the frame and supports the included engine perches and motor mounts.

Two rubber engine mounts are supplied with the kit. Rubber mounts help absorb normal drivetrain vibration before it reaches the frame and cab. This makes them well suited for street-driven trucks where comfort and dependable performance are important.

The crossmember and mounts work together to establish a secure foundation while still allowing builders to test-fit and confirm the engine position during installation.

Transmission Crossmember for Popular GM Automatics

Supporting the rear of the drivetrain is just as important as positioning the engine. The included transmission crossmember helps locate the transmission while the rubber mount reduces the amount of vibration transferred into the chassis.

The kit is designed to support several popular GM automatic transmissions, including:

TH350
TH400
700-R4
4L60E

This compatibility gives builders several choices depending on the goals of the truck.

A TH350 or TH400 may be appropriate for a more traditional build, while a 700-R4 or 4L60E can add overdrive for more relaxed highway cruising. Transmission selection should also consider engine output, rear-axle gearing, tire diameter and the truck’s intended use.

Traditional Performance or Overdrive Cruising

The right transmission can significantly change how a classic truck feels on the road.

Traditional three-speed automatics offer familiar operation and straightforward installation. Overdrive transmissions can reduce engine speed during highway driving, which may improve cruising comfort and help reduce unnecessary engine rpm.

The 700-R4 is hydraulically controlled, while the 4L60E requires electronic control. Builders considering either transmission should plan for the correct throttle-valve setup, wiring, controller, shifter and related components.

Test-Fit Before Final Installation

Every classic truck build is different. Engine accessories, headers, steering systems, oil pans and transmission choices can all change the amount of available space.

Before permanently attaching the crossmembers, install the engine and transmission together and check the complete drivetrain position.

Important areas to inspect include:

Firewall clearance
Transmission-tunnel clearance
Oil-pan and axle clearance
Steering-box and linkage clearance
Header and exhaust clearance
Radiator and fan space
Distributor access
Transmission-pan access
Driveshaft length
Driveline operating angles
Shifter and linkage routing

The drivetrain should sit at the proper angle and remain centered within the chassis. Taking time to measure and test-fit the components can help prevent clearance and alignment problems later in the build.

Why Choose a Packaged Install Kit?

Buying the major mounting components as a package can make the early stages of an engine swap more manageable.

The CPP 4759ETX-K offers several practical advantages:

Engine and transmission support in one package
Rubber mounts for reduced vibration
Compatibility with popular GM transmissions
A cleaner alternative to sourcing separate components
A strong starting point for a classic Chevy truck drivetrain upgrade

The kit still requires careful installation and vehicle-specific planning, but it helps eliminate some of the guesswork involved in selecting the primary mounting parts.

Start Your Classic Chevy Truck Drivetrain Upgrade

Whether you are building a dependable cruiser, a highway-friendly restomod or a more powerful street truck, the drivetrain needs a secure mounting foundation.

The CPP 4759ETX-K Engine and Transmission Install Kit combines the major components needed to install a small-block Chevy engine and compatible GM automatic transmission in a 1947–59 Chevrolet truck.