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Au block, 3.9 head ,carburated- info required 

 

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 Post subject: Au block, 3.9 head ,carburated- info required
Posted: Sun Sep 11, 2005 10:32 pm 
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Location: napier
New Zealand

Hi people-running speedway in nz-would like your views on this combo
Running older electronic as no fuel injection etc all sensors are gone
have max lift values of .50 on both and only 300cfm to play with
is there any advantage on running AV gas?-thinking 98octane
any thoughts would be good would prefer to run it at around 5000rpm
they will pull 6 and more I'm lead to believe, but is there any advantage in doing this with only 300 cfm???? Oh and head mods are basically only allowed to be port matched and polish can get away with slight porting
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Posted: Sun Sep 11, 2005 10:36 pm 
Getting Side Ways
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As far as I know, you can't run av-gas with a cat converter unless you want to melt it.

 

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Posted: Sun Sep 11, 2005 10:45 pm 
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no cat just in and out--thinking standard ex out into 3 inch for flow and heat reasons(ex manifolds tend to get red hot not allowed headers)
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Posted: Sun Sep 11, 2005 11:00 pm 
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also up to what models block wise can you put the 3.9 head onto
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Posted: Sun Sep 11, 2005 11:14 pm 
Getting Side Ways
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Smackdown wrote:
As far as I know, you can't run av-gas with a cat converter unless you want to melt it.

m8, its for speedway racing...... no cat!

 

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Posted: Sun Sep 11, 2005 11:40 pm 
Getting Side Ways
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Age: 33

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Ride: BA Falcon EGas

Location: Perth
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Interceptor wrote:
Smackdown wrote:
As far as I know, you can't run av-gas with a cat converter unless you want to melt it.

m8, its for speedway racing...... no cat!


Yeah, just read it again. I'm a tool.

 

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BA Falcon Futura on EGas. Stock as...

EF 5 speed manual; PH 4480 Pacemaker Headers; 2 1/2" Lukey Mandrel Bent System; Hi Flow Walker Cat; Stage 3 Crow Cam; ChipTorque Chip; 3" Mandrel Bent Intake; K&N Pod Filter; Low Pedders Suspension; 17" EL GT Champagne Rims; RPM Series Clutch

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