Dart Aluminum block 388/427

DART LSNEXT Alluminum Skirted for traditional oil pan mount

CP Carrillo shelf piston with GFX file fit rings

Manley H-Heavy 4340 forged connecting rods with ARP 2000 rod bolts

Callies Compstar Center counter-weighted Crankshaft 3.622" or 4.000"

balance crankshaft

King main bearings

King rod bearings

Cam bearings

This short block is rated to 1300HP

***All Dart blocks require Dart Windage Tray***

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:
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***

*A crate is not required for a customer pickup*

Call for any questions: 972-853-2450
545 Justin Pl.
Nevada, TX
75173

We are located at: 

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.

TURBO	INT DUR @ .050"	EXH DUR @ .050"	INT LIFT	EXH LIFT	LSA	ADV
STAGE 1	226	232	0.578	0.587	115	4
STAGE 2	230	235	0.625	0.625	116	5
STAGE 3	240	246	0.63	0.63	116.5	6
STAGE 4	247	253	0.63	0.63	117	6
CENT BLOWER	INT DUR @ .050"	EXH DUR @ .050"	INT LIFT	EXH LIFT	LSA	ADV
STAGE 1 up to 800HP	226	232	0.578	0.587	115	4
STAGE 2 800-1200HP	236	250	0.625	0.625	115	4
STAGE 3 1000-1400HP	240	256	0.625	0.625	115	4
PDS BLOWER	INT DUR @ .050"	EXH DUR @ .050"	INT LIFT	EXH LIFT	LSA	ADV
STAGE 1 FOR 1.9	222	235	0.595	0.595	120	4
STAGE 2 FOR PORTED 1.9 OR 2.3	233	249	0.63	0.6	120	4
NA CATHEDRAL	INT DUR @ .050"	EXH DUR @ .050"	INT LIFT	EXH LIFT	LSA	ADV
STAGE 1 UP TO 125 NITROUS	216	224	0.553	0.553	117	4
STAGE 2 UP TO 125 NITROUS	222	225	0.561	0.578	112	4
STAGE 3 UP TO 150 NITROUS	226	232	0.578	0.587	112	4
STAGE 4 UP TO 200 NITROUS	232	238	0.625	0.625	112	4
NA SQUARE PORT	INT DUR @ .050"	EXH DUR @ .050"	INT LIFT	EXH LIFT	LSA	ADV
STAGE 1 UP TO 125 NITROUS	216	224	0.553	0.553	117	4
STAGE 2 UP TO 200 NITROUS DO NOT MILL HEADS ON STOCK SHORT BLOCK	233	239	0.63	0.63	112	4
STAGE 3 UP TO 200 NITROUS NOT FOR STOCK SHORT BLOCK	236	242	0.625	0.625	113	4
STAGE 4 UP TO 250 NITROUS NOT FOR STOCK SHORT BLOCK	240	256	0.625	0.625	113	4