Hello, this auction is for a Gen 3 Iron Ls1 Ls3/Lm7 Short Block with assembled heads and NO cam. Head studs are in the motor and are only hand tight to keep the heads in place. When you buy engine its ready for you to put your cam and lifters in and finish putting the rest of your parts on! With the 64cc head this motor will be at roughly 11.4:1 depending on the thickness of your head gasket.


 The Following parts have been used in the building of this Motor: 

CNC MACHINED LM7 GM BLOCK

KING MAIN AND ROD BEARINGS

DURABOND CAM BEARINGS

WISECO FORGED 3.903" FLAT TOP PISTONS

HASTINGS PLASMA CROMOLY FILE FITTED RINGS 

 4340 FORGED 6.125 H-BEAM CONNECTING RODS 

 4340 FORGED 4.000" STROKE CRANK

24X RELUCTOR WHEEL

ROTATING ASSEMBLY IS INTERNALLY BALANCED

LS3 CNC MACHINED ALUMINIUM HEADS


Part Type:Cylinder Heads
  
Cylinder Head Style:Assembled
Cylinder Head Material:Aluminum
Cylinder Head Finish:Natural
Combustion Chamber Volume (cc):64 cc
CNC-Machined Combustion Chamber:No
Intake Runner Volume (cc): 
255 cc 
 
CNC-Machined Intake Runner: No
CNC-Machined Exhaust Runner: No
Intake Port Shape: Rectangle
Intake Port Location: Standard
Exhaust Port Shape: Oval
Exhaust Port Location: Standard
Comp. Valve Job: 

Seat Pressures:

Seat Pressure W/O Inner Spring:		Yes 

Closed 145

Closed 115
Intake Valves Included: Yes
Intake Valve Diameter (in): 2.165 in.
Exhaust Valves Included: Yes
Exhaust Valve Diameter (in): 1.600 in. 
Valve Springs Included:  Yes (Double Springs up to .680 lift) 
Retainers Included: Yes
Locks Included: Yes
Valve Stem Seals Included: Yes 
Rocker Arm Studs Included: No 
Rocker Arms Included: No 
Rocker Arm Nuts Included: No 
Guideplates Included: No 
Valve Cover Mounting Style: Perimeter Bolt
Accessory Bolt Holes Drilled: Yes 
Intake Valve Angle: 45 deg.
Exhaust Valve Angle: 45 deg.
Valve Guides Included: Yes 
Valve Guide Material: Bronze 
Valve Seats Machined: Yes
Valve Seat Machine Style: 3-angle
Valve Seat Material: Ductile iron 
Oiling Style: Through pushrod 
Machined for O-Ring: No 
Heat Crossover: No
Quantity:Sold in Sets of Two
Parts Used in Assembly as follows: 
  • 1.600" one piece swirl polished stainless steel severe duty exhaust valves (Qualcast)
  • 2.165" one piece swirl polished stainless steel severe duty intake valves (Qualcast)
  • 1.320" OD X 2.235 True Double Springs  (Qualcast)
  • New Hardened 1.300 Retainers 7°
  • New Hardened 312 Valve Locks
  • New 312  Positive Control Seals
  • New .015" Valve Shim
Springs
Number Of Coils: Dual Spring
Damper Spring: No
Overall Diameter: 1.320" OD
Inside Diameter: .676" ID
Spring Height: 1.800"
Seat Pressure: 145 lbs @ 1.800"
Open Pressure: 385 lbs. @ 1.150"
Coil Bind: 1.100"
Spring Rate (lbs./in.): 375 lbs/in
Max Lift: .680"




ALL ENGINES WILL BE SHIPPED IN FULLY ENCLOSED WOODEN CRATE. NO EXCEPTIONS. WE WANT YOUR MOTOR TO ARRIVE SAFELY AND UNHARMED SO YOU HAVE NOTHING TO WORRY ABOUT.

NOTE: THIS IS A PERFORMANCE ENGINE. IT IS YOUR JOB TO MAKE SURE THAT THIS WILL FIT IN YOUR APPLICATION. WE ACCEPT NO RESPONSIBILITY OVER FITMENT ISSUES. ALL MOTORS MIGHT REQUIRE MINOR MODIFICATIONS FOR INSTALLATION( DRILL AND TAP HOLES FOR CLEARANCEING). THESE CHANGES ARE MINOR AND CAN BE PERFORMED WITH SIMPLE COMMON TOOLS. WE WILL NOT BE RESPONSIBLE FOR ANY WORK THAT YOU MIGHT HAVE TO DO FOR CLEARANCE ISSUES. THIS DOES NOT WARRANT THE RETURN OF A PRODUCT!!!




If you have any questions or concerns feel free to contact me via the eBay Messenger. I will be happy to answer any Questions you might have. Also, IF you pay with any kind of check I will waive the shipping fee.




Thanks for looking!