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 Post subject: expected power gains?
PostPosted: Mon Jul 26, 2010 7:10 am 
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EFI Slant 6

Joined: Sun May 23, 2010 8:38 pm
Posts: 454
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Hi, I have a1967 VC and with a 225.

Heads been ported and polished, and I want to shave the head abit to get the comp to 9.5:1, want to get bigger valves etc, car has a 2bbl 350 holley with aussie speed long runner intake and headders. brand new elec ignition with the module etc. Was also thinking of getting a more radical cam.

What kind of power/ torque do you reckon I'd get? I am aiming for around 225hp. but what kinda of torque? With just the standard stall, and 3 spped 904tf and 3.89 diff gears do you reckon I could get 300+nm ?

Thanks,

also if you geniuses have any ideas of what I should or shouldn't do with this please tell me.

NB: Did think of getting high comp pistons but none are avail here in Australia. Car is a street performance car/ daily driver.


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PostPosted: Mon Jul 26, 2010 8:55 am 
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Joined: Mon Oct 14, 2002 4:32 pm
Posts: 4880
Location: Working in Silicon Valley, USA
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Quote:
... also if you have any ideas of what I should or shouldn't do with this, please tell me.

... Car is a street performance car/ daily driver.
Don't put too much cam in it.
Measure your current static and dynamic compression ratios.
Select a cam that will support your intended RPM range, then match the static compression to give yourself an 8 to 1 DCR.
DD


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 Post subject:
PostPosted: Tue Jul 27, 2010 12:07 am 
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EFI Slant 6
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Joined: Wed May 17, 2006 9:31 pm
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Location: Western Australia
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You may find you need a bit more stall than standard in the convertor. But then again......you may not. Sorry, that's not really helpful. :)

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 Post subject:
PostPosted: Tue Jul 27, 2010 5:44 am 
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Joined: Mon Oct 21, 2002 11:08 am
Posts: 16871
Location: Blacksburg, VA
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All depends on your cylinder head. Cameron Tilley in Sydney (Manly, actually), could tell you where to get a good head made up, or he could maybe do it.

I would mill/deck for 9.5:1 then get an Erson 280/270 cam or similar, and a 2600-2800 stall converter. It will feel like a stock stall until you stand on it.

Lou

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