5TH Gen COPO Camaro

Troy Pourciau · 12-05-2011, 09:46 PM

427
327/2.9
327/4.0
Suggested class
A Stock
AA Stock
A Super Stock
Cubic inches
427 (7.0L)
327 (5.3L)
327 (5.3L)
Block
LS7
LS9
LSX
Block material
Aluminum
Aluminum
Cast iron
Bore x Stroke (in.)
4.125 x 4.100
4.065 x 3.150
4.065 x 3.150
Crank
Forged steel
Forged steel
Forged steel
Rods
H-beam
H-beam
H-beam
Pistons
Forged dome
Forged dome
Forged dome
Compression ratio
13.5:1
10.2:1
10.2:1
Heads
LS7
LS7
LS7
Induction
natural
boosted
boosted
Intake
Holley 2.9L
Whipple 4.0L
Whipple
Camshaft type
Hydraulic roller
Hydraulic roller
Hydraulic roller
Cam duration (deg.)
233/276 @ 50
244/255 @ 50
244/255 @ 50
Cam lift (in.)
.595
.650
.650

12-05-2011, 09:46 PM	#14
Troy Pourciau Senior Member Join Date: Apr 2010 Location: Baton Rouge, LA. Posts: 678 Likes: 0 Liked 0 Times in 0 Posts	Re: 5TH Gen COPO Camaro 427 327/2.9 327/4.0 Suggested class A Stock AA Stock A Super Stock Cubic inches 427 (7.0L) 327 (5.3L) 327 (5.3L) Block LS7 LS9 LSX Block material Aluminum Aluminum Cast iron Bore x Stroke (in.) 4.125 x 4.100 4.065 x 3.150 4.065 x 3.150 Crank Forged steel Forged steel Forged steel Rods H-beam H-beam H-beam Pistons Forged dome Forged dome Forged dome Compression ratio 13.5:1 10.2:1 10.2:1 Heads LS7 LS7 LS7 Induction natural boosted boosted Intake Holley 2.9L Whipple 4.0L Whipple Camshaft type Hydraulic roller Hydraulic roller Hydraulic roller Cam duration (deg.) 233/276 @ 50 244/255 @ 50 244/255 @ 50 Cam lift (in.) .595 .650 .650