• 1300HP DART SHPLSNEXT 388/427 1300HP w/ Frankenstein Thompson Edition M311 Heads

DART SHPLSNEXT 388/427 1300HP 


Dart SHP LSNEXT Finishing kit 

CP Carrillo Shelf Piston with GFX file fit rings

K1 6.125 4340 LS H beam Connecting Rods with ARP 2000 rod bolts

K1 4.000" Crankshaft 4340 Forged

balance crankshaft

King main bearings

King rod bearings

Cam bearings

This short block is rated to 1300HP

Frankenstein Thompson Edition M311 long block conversion

11* CNC ported aftermarket casting 6 bolt heads

Extreme duty stainless intake and extreme duty solid exhaust valves

Billet Rocker Rails

PAC .007" platinum springs

Thompson Motorsports custom ground Camshaft

Billet adjustable timing set

Melling Select High pressure/ High Volume oil pump 

Cometic MLS head gaskets

ARP 6 Bolt Head Studs

Trunnion Upgraded Rockers 

Thompson Motorsports high RPM 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)***


*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



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.

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1300HP DART SHPLSNEXT 388/427 1300HP w/ Frankenstein Thompson Edition M311 Heads

  • Product Code: P-F1-M311
  • Availability: 1000
  • $16,006.30
  • $14,855.31

Available Options

Tags: Thompson Motorsports, TMS edition, racing engines, aftermarket engines, long blocks, TMS Long Block Package