What CR do you come up with?
Thread Starter
Restricted User
iTrader: (43)
Joined: Nov 2001
Posts: 2,669
Likes: 1
From: Pittsburgh, PA
What CR do you come up with? I have had people tell me all kinds of crazy numbers. Here is the setup.
6.0 Iron block
4.030 Bore
4" Stroke
-2 CC pistons
Cometic .043 head gaskets
241 Heads milled .030 with 2.02 valves
I figured it to be 12.3:1 but I am not 100% positive if the pistons are .008 out of the hole like they are on a 5.7 liter.
6.0 Iron block
4.030 Bore
4" Stroke
-2 CC pistons
Cometic .043 head gaskets
241 Heads milled .030 with 2.02 valves
I figured it to be 12.3:1 but I am not 100% positive if the pistons are .008 out of the hole like they are on a 5.7 liter.
Last edited by 2001 Pewter WS6; Mar 4, 2005 at 09:12 PM.
Originally Posted by 2001 Pewter WS6
I have had people tell me all kinds of crazy numbers. Here is the setup.
6.0 Iron block
4.030 Bore
-2 CC pistons
Cometic .043 head gaskets
241 Heads milled .030 with 2.02 valves
I figured it to be 12.3:1 but I am not 100% positive if the pistons are .008 out of the hole like they are on a 5.7 liter.
6.0 Iron block
4.030 Bore
-2 CC pistons
Cometic .043 head gaskets
241 Heads milled .030 with 2.02 valves
I figured it to be 12.3:1 but I am not 100% positive if the pistons are .008 out of the hole like they are on a 5.7 liter.
need the stroke to figure out swept CC
using these specs
4.030 bore
4.00 stroke
.043 gasket thickness
4.04 gasket bore diameter
62.37 combustion chamber(approx size when milled .030)
-.008 deck height
-2cc pistons
I get 12.6. this will be an approx. as the pistons are out of deck on the iron block and the amount the deck is surfaced and final out of hole height of the piston will effect it some, though not much. bore size of the gasket will also effect is some though again not much.
4.030 bore
4.00 stroke
.043 gasket thickness
4.04 gasket bore diameter
62.37 combustion chamber(approx size when milled .030)
-.008 deck height
-2cc pistons
I get 12.6. this will be an approx. as the pistons are out of deck on the iron block and the amount the deck is surfaced and final out of hole height of the piston will effect it some, though not much. bore size of the gasket will also effect is some though again not much.
