Engine Packages
Torquer LS3
Bore: 4.065”
Stroke: 3.622”
Displacement: 376ci/6.2L
Horsepower: 530
Torque: 470
Redline: 6600RPM
CR: 10.7:1
Block: LS3 aluminum
Crankshaft: LS3 cast iron
Connecting rods: LS3 forged powdered metal with Katech rod bolts
Pistons: LS3 cast hypereutectic aluminum
Camshaft: Torquer LS3
Cylinder heads: CNC-ported LS3
Valves: LS3 hollow stem intake, solid exhaust
Induction: LS3
Oiling system: wet sump
Price: $8,630
Value 427 LS3 short block
Bore: 4.070”
Stroke: 4.100”
Displacement: 427ci/7.0L
Horsepower: 0
Torque: 0
Redline: 6800RPM
CR: 11.0:1
Block: LS3 aluminum
Crankshaft: 4340 forged steel
Connecting rods: Forged H-beam
Pistons: 2618 Forged aluminum
Camshaft: not included
Cylinder heads: not included
Valves not included
Induction: not included
Oiling system: not included
Price: $5999.99
Value 427 LS3
Bore: 4.070”
Stroke: 4.100”
Displacement: 427ci/7.0L
Horsepower: 580
Torque: 560
Redline: 6800RPM
CR: 11.0:1
Block: LS3 aluminum
Crankshaft: 4340 forged steel
Connecting rods: Forged H-beam
Pistons: 2618 Forged aluminum
Camshaft: Katech value 427 spec
Cylinder heads: CNC-ported LS3
Valves: LS3 hollow stem intake, LS3 solid exhaust
Induction: LS3
Oiling system: wet sump with Katech oil pump
Price: $16,000
Motorsports 550 Engine
Bore: 4.065”
Stroke: 3.622”
Displacement: 376ci/6.2L
Horsepower: 550
Torque: 560
Redline: 6600RPM
CR: 10.7:1
Camshaft: Katech 550 spec
Oiling system: ARE 3 stage dry sump
Price: $17,999
Street Attack LS7
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: 630
Torque: 565
Redline: 7000RPM
CR: 11.4:1
Block: LS7 aluminum, billet main caps
Crankshaft: 4140 forged steel
Connecting rods: Powdered metal titanium, rebushed with bronze bushing
Pistons: 4032 forged aluminum
Camshaft: Torquer LS7 110 or 116LA, high speed lifters, C5-R chain
Cylinder heads: CNC-ported LS7
Valves: Titanium intake, hollow sodium filled exhaust
Induction: FAST LSXR 102mm
Oiling system: LS7 dry sump
Price: $27,233
Street Attack 500
Bore: 4.165”
Stroke: 4.600”
Displacement: 502ci/8.2L
Horsepower: 685-730
Torque: 685
Redline: 6200RPM
CR: 11.4:1
Block: RHS aluminum with billet main caps, ARP studs, piston squirters
Crankshaft: Forged 4340 steel
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum with DLC-coated pins
Camshaft: Street Attack 500
Cylinder heads: CNC-ported LS7
Valves: LS7 titanium intake, hollow sodium-filled exhaust
Induction: FAST LSXR 102mm
Oiling system: Stock LS7 with Katech pump, optional ARE Stage 3 dry sump
Price: $34,768
Track Attack 427
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: 660
Torque: 570
Redline: 7000RPM
CR: 12.0:1
Block: RHS aluminum with billet main caps, ARP studs, piston squirters
Crankshaft: 4340 forged steel with ATI damper
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum, hardcoat anodized, skirt coating, gas porting and DLC-coated pins
Camshaft: GM Stage 3
Cylinder heads: CNC-ported LS7 with bronze valve guides, ARP studs
Valves: Katech titanium/molybdenum intake, hollow sodium-filled exhaust
Induction: FAST LSXR 102mm
Oiling system: ARE Stage 3 with Katech HCS/HCP (red) pump
Price: $34,640
Track Attack 463
Bore: 4.165”
Stroke: 4.250”
Displacement: 463ci/7.6L
Horsepower: 700
Torque: 650
Redline: 7000RPM
CR: 13.0:1
Block: RHS aluminum, billet main caps, ARP studs, piston squirters
Crankshaft: 4340 forged steel with ATI damper
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum, hardcoat anodized, skirt coating, gas porting and DLC-coated pins
Camshaft: Katech Track Attack 472 spec
Cylinder heads: CNC-ported LS7 with bronze valve guides, ARP studs
Valves: Katech titanium/molybdenum intake, hollow sodium-filled exhaust
Induction: FAST LSXR 102mm
Oiling system: ARE or Dailey 5 stage
Price: $36,397
Track Attack 500
Bore: 4.165”
Stroke: 4.600”
Displacement: 502ci/8.2L
Horsepower: 812
Torque: 775
Redline: 6200RPM
CR: 14.0:1
Block: RHS aluminum, billet main caps, ARP studs, piston squirters
Crankshaft: 4340 forged steel with ATI damper
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum, hardcoat anodizing, skirt coating, gas porting, and DLC-coated pins
Camshaft: Desert Attack 500-spec solid roller, Jesel lifters and rockers
Cylinder heads: CNC-ported All-Pro with bronze valve guides, ARP studs
Valves: Katech titanium/molybdenum intake, hollow sodium-filled exhaust
Induction: Kinsler vertical with 8 individual throttle bodies
Oiling system: Dailey 5 stage
Price: $60,000
Air Attack LS7 SC
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: up to 1000
Torque: up to 1000
Redline: 7000RPM
CR: 10.0:1
Block: RHS aluminum with billet main caps, ARP studs, piston squirters
Crankshaft: Forged 4340 steel
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum with DLC-coated pins
Camshaft: Air Attack LS7 SC-spec
Cylinder heads: LS7 with ARP studs, bronze valve guides
Valves: Katech titanium/molybdenum intake, hollow sodium filled exhaust
Induction: Procharger D1 with LS7 intake or Whipple 2.9L
Oiling system: Stock LS7
Air Attack LS7 TT
Bore: 4.125”
Stroke: 4.000”
Displacement: 427ci/7.0L
Horsepower: up to 1000
Torque: up to 1000
Redline: 7000RPM
CR: 9.0:1
Block: RHS aluminum with billet main caps, ARP studs, piston squirters
Crankshaft: Forged 4340 steel
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum with DLC-coated pins
Camshaft: Air Attack LS7 TT-spec
Cylinder heads: LS7 with ARP studs, bronze valve guides
Valves: Katech titanium/molybdenum intake, inconel exhaust
Induction: APS Twin Turbo to LS7 intake
Oiling system: Stock LS7
LS9.R
Bore: 4.070”
Stroke: 4.000”
Displacement: 416ci/6.8L
Horsepower: 628
Torque: 551
Redline: 7000RPM
CR: 12.5-13.0:1
Block: LS9 with billet main caps, ARP studs, piston squirters
Crankshaft: Forged 4340 steel
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum with DLC-coated pins
Camshaft: LS9.R, high speed lifters
Cylinder heads: LS9 with 12mm head studs and bronze valve guides
Valves: Katech titanium/molybdenum intake, hollow sodium-filled exhuast
Induction: FAST LSXR102mm
Oiling system: ARE or Dailey 5 stage
Price: $26,000
Hot Rod LS3
Bore: 4.065”
Stroke: 3.622”
Displacement: 376ci/6.2L
Horsepower: 550
Torque: 480
Redline: 6600RPM
CR: 10.7:1
Block: LS3 aluminum
Crankshaft: LS3 cast iron
Connecting rods: LS3 forged powdered metal with Katech rod bolts
Pistons: LS3 cast hypereutectic aluminum
Camshaft: Torquer LS3
Cylinder heads: CNC-ported LS3
Valves: LS3 hollow stem intake, solid exhaust
Induction: Single plane with Holley carburetor
Oiling system: wet sump
Price: $9,970
Hot Rod LSX 454
Bore: 4.220”
Stroke: 4.100”
Displacement: 459ci/7.5L
Horsepower: 675
Torque: 580
Redline: 6800RPM
CR: 11.0:1
Block: LSX iron with billet main caps
Crankshaft: Forged 4340 steel
Connecting rods: Forged H-beam steel
Pistons: 2618 forged aluminum
Camshaft: GM Stage 3
Cylinder heads: CNC-ported LS3
Valves: LS3 hollow intake, solid exhaust
Induction: Single plane cast aluminum manifold with Holley 850cfm carburetor
Oiling system: Wet sump with Katech oil pump
(includes MSD ignition box and harness to install in any hot rod)
Price: $19,999
Disclaimer: Prices are to be used as a guide. Variations on packages and options will affect price. Prices are subject to change at any time. All engines are quoted specifically for that project. For a detailed quote, please email jason@katechengines.com