my friend wanted to know whats a good air to fuel ratio for a 3v gt and what compression is also good for that motor for high boost likea turbo charger ...i asked in the 2007 section but no one answered and sorry for asking he just really wants me to find out for him on the forum

 

A good safe a/f ratio is around 12.5. For boost, you'll want lower compression (in the 8.5 range).

 

For forced induction you will want to keep your a/f ration around 11.5~12.

 

Of course thats at WOT.........10.9 is on the rich side. 11.7 is perfect (so they say) 12.5+ Danger Zone 13.5+ BOOM

 

Depends on how much boost you want to run will tell you where to keep the compression at and same for the A/F ratio. The new mustangs don't like to run lean or close to lean. the older mustangs, if you lean them alittle you gained some HP, the newer mustang hate it, though running boost, you have to make it fat and happy.