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vortec heads with a non vortec manifold?

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Old Apr 7, 2004 | 06:11 PM
  #1  
walterrao's Avatar
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From: chattanooga
Car: 91 RS
Engine: vortec 355 hsr
Transmission: wct5
Axle/Gears: bg3.27
vortec heads with a non vortec manifold?

is this possible. I heard that it was possible to just ovalize the bolt holes on the intake so it can fit the vortec heads, but others say its impossible. does anyone know i would appretiat it a lot
Thanks
-Walter
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Old Apr 7, 2004 | 07:10 PM
  #2  
KagA152's Avatar
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From: Roscoe, IL
Car: 1991 Trans Am
Engine: LQ4
Transmission: T-56
Axle/Gears: 3.70
the intake would have to have some tall ports. i know for sure that a lt1 intake will not work with vortech heads because thier intake ports are taller
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Old Apr 7, 2004 | 07:17 PM
  #3  
walterrao's Avatar
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From: chattanooga
Car: 91 RS
Engine: vortec 355 hsr
Transmission: wct5
Axle/Gears: bg3.27
well i will be using a tbi, or carb manifold.
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Old Apr 7, 2004 | 08:08 PM
  #4  
rustybluebird's Avatar
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From: Canada
Car: 87 Firebird
Engine: 350, 416's, 230/230 cam, torkerII, q-jet
Transmission: T5
Take a look at how many bolt holes are on a vortec head and then look at you manifold and see if it will work (besides the obvious port mismatch).
Elongating the bolt holes on a pre 87 intake with work with post 87 heads (2nd gen sbc).
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