item40
item11
zz427
The ZZ427 big block crate

GM ZZ427 Crate Engine

All GM Performance Parts Crate
zz427crate
We offer everything you need

Type

Chevy Big Block V8

Displacement

427ci

Horsepower

See Don Chart

Torque

See Dyno Chart

Bore x Stroke

4.25 x 3.76in

Block

Cast Iron with 4-Bolt Main Caps

Crankshaft

Forged Steel

Pistons

Forged Aluminum

Connecting Rods

Forged Steel

Cylinder Head

Aluminum Oval Port; 110cc Chambers

Valve Size

2.19in Intake / 1.88in Exhaust

Compression Ratio

9.5:1

Camshaft Type

Hydraulic Roller

Camshaft Lift

.510 Intake / .540 Exhaust

Camshaft Duration (@.050in)

211 degree Intake / 230 degree Exhaust

Rocker Arms

Aluminum Roller Style

Rocker Arm Ratio

1.7:1

Recommended Fuel

92 Octane

Ignition Timing

Base 8 degree BTDC, 36 degree total

Maximum RPM

6000

zz427dyno
item4a
youtubebutton
sps flag logo
cooltext76393365
redbar
Southern Performance Systems, Inc
likeusonfacebook
pinterestbutton2
youtubebutton
item9