pro comp vortec head
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Joined: Dec 2012
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From: cape cod ma
Car: 1988 gta
Engine: 383
Transmission: 700r4
Axle/Gears: 9 bolt 3:23
pro comp vortec head
Anyone try a set of these. Vortec iron heads, 190cc, 64cc chamber, has the 7th bolt hole on the exhaust side. Head is tapped to accept vortec manifold and old style TPI?? Cheap too.
On Probation
Joined: Oct 2008
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: pro comp vortec head
The point of genuine GM Vortecs is they get such excellent flow from only 170 cc. Whatever you found had better be over 270 cfm by 0.500" on a 4" bore, or why get them? If they're over 250 cfm by 0.550" then they're better than Sportsman 2s. Don't ever consider those.
Joined: Apr 2005
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From: Not in Kansas anymore
Car: 82 Z28
Engine: 383 SP EFI/ 4150 TB
Transmission: T400
Axle/Gears: QP 9" 3.73
Re: pro comp vortec head
They use that as a big selling point , but all it really means is reg 12 bolt SBC intake will bolt up.
Not that the intake ports will actually match
( without welding to increase port height to match the raised port on the Vortecs)
Not that the intake ports will actually match
( without welding to increase port height to match the raised port on the Vortecs)
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Joined: Mar 2007
Posts: 205
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From: North Carolina
Car: 1992 RS B4C
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 3.23 10 bolt limited slip
Re: pro comp vortec head
The point of genuine GM Vortecs is they get such excellent flow from only 170 cc. Whatever you found had better be over 270 cfm by 0.500" on a 4" bore, or why get them? If they're over 250 cfm by 0.550" then they're better than Sportsman 2s. Don't ever consider those.
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