17802827 - COPO LS 327-4.0L S/C 550hp Crate Engine
This product may require vehicle validation(s) for proper fitment. Please contact us to confirm correct vehicle fitment and usage.
The most powerful supercharged COPO crate engine is designed for NHRA's A Super Stock class and uses a large, 4.0L compressor to generate tremendous horsepower. Its foundation is the sturdy LSX cylinder block, with a tough, all-forged rotating assembly and the big-displacement Whipple blower. Like the other COPO crate engines, this one uses the high-flow LS7 heads to move as much air as possible.
Chevrolet Performance LSX cast-iron block with steel main caps
4.065" bore x 3.150" stroke
Static compression ratio — 10:1 nominal
Callies 4340 crankshaft — double-keyed snout
Callies 4340 H-beam Ultra rods
• 6.350" length
• .928" pin bore diameter
Clevite H-Series heat-treated tri-metal rod and main bearings
Mahle 2618 alloy forged domed pistons
• Graphal coating
• Hard-anodized top ring groove
• Friction-coated skirts
Mahle .043" x .043" x 3mm piston rings
• Ductile iron top with radius molybdenum face
• Plain cast-iron tapered 2nd
• Chrome-plated oil rails with low-tension expander
COMP Cams steel billet hydraulic roller camshaft
• Duration — 246° IN/254° EX @ .050" lift
• Theoretical valve lift — .630" /.630"
• Lobe centers — 117°
Chevrolet Performance "Ceramic Ball" high-rpm hydraulic roller tappets
3/8" diameter LS7 pushrods
1.8:1 ratio LS7 rocker arms with roller trunions
PSI "Max Life" beehive valve springs
Hardened steel spring seats
Lightweight steel retainers
Fully CNC'ed aluminum cylinder heads — based on LS7
275 cc nominal intake port volume
89 cc nominal exhaust port volume
70 cc nominal combustion chamber volume
Del West titanium intake valves — 2.205" head diameter x 7mm stem
Lightweight sodium-filled exhaust valves — 1.615" head diameter x 7mm stem
Fel-Pro Performance multi-layer steel head gaskets with raised cylinder sealing bead
Internal wet sump oil pump
Deep-sump cast aluminum oil pan —
ATI Performance Products SFI-approved damper — 10-rib shell
4.0L Whipple twin-screw supercharger
Whipple billet throttle body
327/550 — 172mm oval blade
High-impedance fuel injectors
• 105 lb/hr @ 43.5 psi with EV1 connector
ENGINE CONTROLS & IGNITION:
Production LS7 ignition coils
Production LS7 secondary wires
- Chevrolet Performance Parts
- Engine Shop - Crate Engines, Bare Blocks and Long Blocks - All Bare, Short, Long & Complete Engines
- Engine Shop - Crate Engines, Bare Blocks and Long Blocks - LS Crate & Long Block Engines
- Performance/Engine/Drivetrain - LSx Performance - 5.3L-327 CID Performance Engines
- Super Stores - COPO Camaro - COPO Camaro Engines
- Item Requires Shipping
- 500.0 lbs.
- Free Shipping!
- FREE 48 State Truck Freight Shipping (International shipping will require freight quote)
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