• LT1 All forged 427CI short block

TMS Blueprinted lt1 bare block with Darton sleeves 4.125-4.155"
Callies Magnum forged crankshaft
K1 6.125" connecting rods
Diamond OR Wiseco pistons
balance crankshaft
King racing rod bearings
King racing main bearings
GMPP cam bearing set

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.


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LT1 All forged 427CI short block

  • Product Code: G5
  • Availability: 1000
  • $8,239.00


Available Options


Tags: Gen5, LT, TMS, TMS Edition, GM