what valve springs

[87WhiteStang1]

what is a good set of valve springs for gt40 heads ported?

 

[joel5.0]

Valve springs need to match the camshaft requirements, not the ports.... which is?

 

[lincoln+ford]

Valve springs need to match the camshaft requirements, not the ports.... which is?

Just get the trick flow kit Trick Flow Specialties TFS-2500100 - Trick Flow® Valve Spring Upgrade Kits - Overview - SummitRacing.com as i wouldnt run anything bigger then aTFS 1 cam with those heads.