Aluminum LSR 388/427 Short Block 1500HP

Concept Performance LSR Block

CP Carrillo shelf piston with GFX file fit rings

Callies Compstar Xtreme Connecting Rods

Callies Compstar Center Counterweighted Crankshaft 3.622" or 4.000"

balance crankshaft

King main bearings

King rod bearings

Cam bearings

This short block is rated to 1500HP

Frankenstein Thompson Edition M311 BOOST MONSTER  long block conversion

11* CNC ported aftermarket casting 6 bolt heads

Manley Stainless intake - Inconel exhaust valves

CHE bronze guides

Billet Rocker Rails

PAC .007" platinum springs

Thompson Motorsports custom ground Camshaft

Billet adjustable timing set

High pressure/ High Volume oil pump 

Cometic MLS head gaskets

ARP 6 Bolt Head Studs

Trunnion Upgraded Rockers 

Johnson lifter set 

LSX Lifter Trays

Thompson Motorsports custom length Chromoly pushrods

Thompson motorsports Professional assembly and 12 month unlimited mileage warranty

For warranties and policies: https://www.thompsonmotorsports.net/warranties-and-policies.php  

***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)***

*** CRATE AND ENGINE STAND REQUIRED FOR SHIPPING***

*A crate is not required for a customer pickup, only an engine stand*

Call for any questions: 972-853-2450

We are located at: 

545 Justin Pl.

Nevada, TX

75173

Finance Options

12 Month | 0% Finance Option - https://www.thompsonmotorsports.net/advancial-financing.php 

Affirm Financing - https://www.thompsonmotorsports.net/affirm-financing.php 

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.