Forged 346/383CI all forged iron block motor STAGE 3

Blueprinted GM block LM7 or Gen 4 5.3 core

CP Carrillo shelf piston with GFX file fit rings

Manley or K1 forged connecting rods with ARP 2000 rod bolts

K1 crankshaft with reluctor 3.622" or 4.000"

King main bearings

King rod bearings

Thompson Motorsports single piece racing cam bearings

Rated 1000hp (or 1200hp with ARP Main Stud Upgrade)

12 month unlimited mileage warranty with the purchase of a new Melling oil pump from TMS

This short block is rated to 900HP (1100HP with ARP main stud upgrade)

PREMIUM SHORT BLOCK UPGRADE AVAILABLE INCLUDES THE FOLLOWING:

• YOUR CHOICE OF TMS CUSTOM GROUND CAMSHAFT
• BILLET ADJUSTABLE TIMING SET
• MELLING SELECT HIGH PRESSURE OIL PUMP
• CAM RETAINER PLATE
• HARDWARE
• INSTALLATION AND TIMING OF COMPONENTS
• ACTIVATION OF YOUR TMS BASIC WARRANTY

*** Cam Chart Below***

 ****PRICE FOR PREMIUM UPGRADE IS SPLIT by the Upgrade drop down and camshaft drop down****

*** YOU MUST CHOOSE A CAMSHAFT FOR A PREMIUM SHORT UPGRADE, you may also choose a camshaft without the premium short upgrade***

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 

*** 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

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.