LT Sleeved All forged 388ci/427ci short block - 1000/1200hp

LT 5.3 Block

TMS Blueprinted Direct inject bare core block with Darton sleeves 4.125-4.155"

CP Carrillo Pistons

Manley H-Heavy or Callies Compstar 4340 forged connecting rods

Callies compstar CCW forged crankshaft

balance crankshaft

King Racing Main/Rod Bearrings

Extra wide cam bearings

This short block is rated to 1000HP (1200HP with ARP main stud upgrade)

TMS 12 month warranty

12 Month Unlimited Mileage warranty with Purchase of Melling High Pressure Oil Pump 
***If, turbo, supercharged, or Stroker motor please add a High Pressure/High Volume oil pump for warranty"(if you do not add this pump for these application warranty will not be valid)***
***If Upgrading to a premium short block- no oil pump purchase needed for warranty (see details on premium short block below)***
For warranties and policies: https://www.thompsonmotorsports.net/warranties-and-policies.php 

 PREMIUM SHORT BLOCK UPGRADE AVAILABLE INCLUDES THE FOLLOWING:
TMS CUSTOM GROUND CAMSHAFT
ADJUSTABLE TIMING SET
MELLING SELECT HIGH PRESSURE OIL PUMP
CAM RETAINER PLATE
HARDWARE
INSTALLATION AND TIMING OF COMPONENTS
ACTIVATION OF YOUR TMS BASIC WARRANTY

*A crate is not required for a customer pickup*

Call for any questions: 972-853-2450

We are located at: 

545 Justin Pl.

Nevada, TX

75173

All motors could require minor modifications for install (drill and tap holes or clearancing). These changes are minor and can be performed with simple common tools. Thompson Motorsports is not responsible for the work required nor does this warrant a reason for the return of the product, even in the case of a direct replacement. We are dedicated to customer service and are more than happy to help with the install in any way possible. Please feel free to call or email with any questions or concerns.

 All high performance motors will come with no VVTI or DOD. If the vehicle originally had either or both of these you will need to change to a LS2 front cover and LS2 valley cover to eliminate. You will also need to alert your tuner to the changes for PCM changes.