Max lift on stock head
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Max lift on stock head
Anybody know where I can find out what the max lift on a 462624 head is? I read on one site .560 but that sounds way to much and I would need better springs as well correct? If so I have one hell of a valvetrain combo in mind.
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Joined: Oct 2002
Posts: 9,067
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: Max lift on stock head
Its not .560.... the LT1 aluminum heads can do that much stock, but not a generic SBC head. They are limitted to around .470 or so typically.
Member
Joined: Oct 2006
Posts: 320
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From: Allenhurst, GA
Car: '81 Z-28
Engine: Soon to be a 383
Transmission: Muncie
Axle/Gears: 3.42
Re: Max lift on stock head
They're good to .480 lift with the z-28 springs. Any more lift they will probably need machined.
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Joined: Oct 2006
Posts: 320
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From: Allenhurst, GA
Car: '81 Z-28
Engine: Soon to be a 383
Transmission: Muncie
Axle/Gears: 3.42
Re: Max lift on stock head
Vortec heads can get .550 with a spring swap. For more than that your choices are aftermarket heads or a machine shop.
Supreme Member
Joined: Sep 2001
Posts: 6,111
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From: Ontario, Canada
Car: 1988 Firebird S/E
Engine: 406Ci Vortec SBC
Transmission: TH-350/3500stall
Axle/Gears: 7.5" Auburn 4.10 Posi-Traction
Re: Max lift on stock head
Why are you wasting your time with the 624 heads?
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theshackle
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