404CI LS2 Carburetor Engine Build - High Winder

Pumping Up A Gen IV LS2 For Serious Motor-Only Duty

404ci ls2 Buildsheet
Specifications not listed are the same as stock. Except as noted, all dimensions are in inches or fractions thereof.

Displacement 404 ci
Bore x Stroke 4.010 x 4.000
Compression 15.3:1
Rod, Center to Center 6.125
Piston Deck Height 0.008
Chamber Volume 60cc
Rod Bearing Clearance 0.0025
Main Bearing Clearance 0.0025
Crank Endplay 0.006
Piston Ring Endgap 0.022 top
  0.026 second
Main Cap Torque 60 ft-lb inner
  50 ft-lb outer (moly)
Cross-bolt 18 ft-lb (sealant)
Rod bolt torque 65 ft-lb (moly)
Head bolt torque 70 ft-lb (moly

FLOW FIGURES
Lift Intake Exhaust
0.100 73 58
0.200 152 130
0.300 237 204
0.400 294 248
0.500 328 263
0.600 352 270
0.700 358 274
0.800 360 274
*cfm at 28 inches H2O

CAMSHAFT SPECS
Manufacturer Comp Cams
Part Number 54-000-12
Grind Number LS1 1724R/ 1860R R 113
Type Mechanical roller
Valve Lift 0.834/0.800-inch intake/exhaust
Duration at 0.050 277°/288° intake/exhaust
Lobe Separation 113°

PRICE LIST
MANUFACTURER PART # DESCRIPTION PRICE
Clevite MS-2199H H-series main bearings (set) $153
  CB-663HN H-series rod bearings (each) 9
Comp Cams 54-000-12 Camshaft 400
  8904-16 3/8-inch Hi-Tech pushrods 160
  875-16 Pro Magnum lifters 208
  947-16 Triple valvesprings 326
  632-16 Super valve locks 32
  4786-16 Spring locators 34
  620-16 Valve lash caps 34
  1500 Gen III aluminum shaft rockers 1,030
  735-16 1.625-inch Titanium retainers 290
Edelbrock 28097 Super Victor LS1 manifold 444
Fel-Pro 1161R/1161L Head gaskets (each) 72
Quick Fuel Technology P-1050-3 3-circuit 1,050-cfm carburetor 940
Moroso 20141 LS1 conversion pan 274
  24840 Oil pump pickup 42
AutoTec 1001783-C Pistons Call for pricing

Sources

Lunati
662-892-1500
www.lunatipower.com
Quick Fuel Technology
Bowling Green, KY 42101
270-793-0900
QuickFuelTechnology.com

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