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3.4/3.8 V6 to LS1

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        Perhaps are largest amount of e-mail questions and phone calls is based on the requirements to install an LS1 into a 3.4/3.8 equipped F-body.  Unless you decide to wire it yourself, you will need the entire chart below***.  The swap is broken down into 2 charts.  The first chart is a requirement regardless of year, meaning all the parts are required for installation.  The second chart is year specific, meaning that you will need to specifically change those parts based on the year of the donor engine/transmission.  You will need these parts in addition to the first chart.  Generally speaking, we suggest having an entire donor car for the swap.

Mandatory components required for the swap

Component Reason
Complete engine assembly Every component is different.  Nothing interchanges with the motors.
Transmission The Bolt pattern is completely different from V6 to V8
Engine Cradle An LS1 engine cradle is formed different to sit lower.  The use of the LS1 mounts is also required.
Radiator

3.4 & 3.8 V6 radiator, no steam line  LS1 radiator, 1 additional line for steam line

The LS1 radiator uses an additional steam line on the RH tank.  Early LS1's also use a low coolant sensor. 
Fuel Pump Assembly Although the V6's and V8's operate at the same PSI, the V8's use a higher volume.   99-02 LS1's have the fuel regulator built into the tank.
Gauge Cluster The speed reading is different, and the tach reading is different.  Not changing the clusters will cause the tach reading to be erratic.   Oil PSI and water temperature readings are also different.
Harnesses The engine harness & PCM are all required changes. 
Hoses The LS1's coolant hoses are in different locations.  The A/C hose is also different.
Throttle System The throttle cables need to be changes since the LS1 cable is mounted on the RH side.  99-02 3.8 equipped cars will require the addition of a mechanical accelerator pedal since they are electronic on the 3.8
Suspension

LS1 rack below, V6 & LT1 rack above

LS1 coil springs are required from the added weight.  Your vehicle will sit low if you do not change the springs, but also have poor handling since springs are rated for a certain weight.  The steering rack is also different to clear the oil pan & alternator.

Other components required, specific to year:

V6 to LS1

Year of donor LS1 Engine/Transmission

1998 1999 2000 2001 2002
F A D W B F A D W B F A D W B F A D W B F A D W B
Vehicle Year 1993 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
1994 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
1995 Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y Y
1996 N Y Y Y Y N Y Y Y Y N Y Y Y Y N Y Y Y Y N Y Y Y Y
1997 N Y N Y Y N Y N Y Y N Y N Y Y N Y N Y Y N Y N Y Y
1998 N N N N N N Y N Y N N Y N Y N N Y N Y N N Y N Y N
1999 N Y N Y N N N N N N N N N Y N N N N Y N N N N Y N
2000 N Y N Y N N N N Y N N N N N N N N N Y N N N N Y N
2001 N Y N Y N N N N Y N N N N Y N N N N N N N N N Y N
2002 N Y N Y N N N N Y N N N N Y N N N N Y N N N N N N

Legend : Y = Yes (Requires Change), N = No (Requires no change)

  • F (Cooling Fans) - LS1's use dual cooling fans.

  • A (Airbag Sensors) - 93-95 models use a 3 sensor system, 96-02 use a single sensor system.  The connectors are physically different as well on 99-02 models.

  • D (Dash Assembly) - 97-02 uses a totally different dash VS the 93-96 Camaros.  Firebird remains interchangeable.

  • W (Wiring) - All the wiring (Relay harness, dash harness, etc).

  • B (Brakes) - The LS1's use a different braking system for the increase power.  The braking system includes the spindles, calipers, ABS unit and controller.

***Note - Swaps can be performed in many methods, including and excluding many parts.  The charts above are just suggestions of the staff at Trans Am Creations for proper trouble free installation and reliability.

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