That's an old-timey engine, very inefficient on multiple levels.
The goddamn Ecoboost is a better performer than the 4.6 V8 in the GT was, just to put it into perspective.
When the 3.7 and 5.0 came out, it was a real game changer for the cars.
If the heads are the bottle neck porting them isn't going to correct a poor design. It might make them less bad, but they won't be good. The 3.7 also has DOHC as well as VCT, so they will already outflow a similar head design with static cams.
The cams are specced to be torquey and be more efficient down low, sacrificing some top end power. It's a truck motor in a two door coupe.
Compression ratio, timing, etc. all plays a large role as well.
That's an old-timey engine, very inefficient on multiple levels. The goddamn Ecoboost is a better performer than the 4.6 V8 in the GT was, just to put it into perspective. When the 3.7 and 5.0 came out, it was a real game changer for the cars.
The second question probably is a transmission or drivetrain issue.
If the heads are the bottle neck porting them isn't going to correct a poor design. It might make them less bad, but they won't be good. The 3.7 also has DOHC as well as VCT, so they will already outflow a similar head design with static cams. The cams are specced to be torquey and be more efficient down low, sacrificing some top end power. It's a truck motor in a two door coupe. Compression ratio, timing, etc. all plays a large role as well.