Vortec Heads for a L03
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Junior Member
Joined: Mar 2001
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From: East Atlanta
Car: 1990 LX hatch
Engine: 5.0
Transmission: t-5
Axle/Gears: stock
Vortec Heads for a L03
Will Chevy's Vortec heads bolt up to a 305? I ahve always heard that 350 heads will screw up a 305.
Junior Member
Joined: Jun 2000
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From: Tucson, AZ USA
They won't screw it up, but Vortecheads for a 305 have a 64cc chamber I believe. And 305 heads have 58cc chambers. So you will have to have them milled. Also as far as I know you cannot go bigger that 2.02 1.94 on the valves.
Supreme Member
Joined: Nov 1999
Posts: 1,069
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From: Charlotte, NC
Car: 1991 Camaro RS
Engine: GMPP 350 HO w/TBI
Transmission: 700R-4
Axle/Gears: 10-bolt w/3.73s
yeah you will definitely need to get them shaved down because with that chamber, you will get WAY too low compression ratio. if you take of some material, you will be all set. i odnt remember exactly what the spec was though, but you should be able to find it somewhere.
other than that they will work great.
-brian
------------------
1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"
other than that they will work great.
-brian
------------------
1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"
Supreme Member
Joined: Nov 1999
Posts: 1,069
Likes: 0
From: Charlotte, NC
Car: 1991 Camaro RS
Engine: GMPP 350 HO w/TBI
Transmission: 700R-4
Axle/Gears: 10-bolt w/3.73s
i just looked through some old magazines...
mill the heads 0.045", and use a 0.015" head gasket to get just over 10.0:1 compression.
maybe a little high for an L03, but you get the idea.
-brian
------------------
1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"
mill the heads 0.045", and use a 0.015" head gasket to get just over 10.0:1 compression.
maybe a little high for an L03, but you get the idea.
-brian
------------------
1991 Camaro RS - ultra blue metallic, t-tops
GMPP 350 HO crate engine - TBI, MSD ignition, SLP exhaust
700R4 - 2,400 stall converter, vette servo
10 bolt - coming soon - SLP zexel torsen differential, GM 3.73s
z28boy.fbody.com
z28boy@twcny.rr.com
AIM - "Z28 Boy"
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