ey guys, a couple of months ago I built a 306 for my 94 F150. Here's the specs so far.
Stock rotating assembly with flat top hyperutectic pistons chromoly rings
Stock Roller cam with 1.72 Roller Rockers
Duration EX 197 IN 182
Lift EX .480 IN .452
LSA 115º
Cam advanced 2º with true roller timing set
9.4:1 Comp Ratio (stock E7 heads)
Baseline timing at 15º
StreetFire Coil
MSD cap and rotor
Ford Racing 9mm wires
Motorcraft copper plugs
Stock intake, throttle body
19lb/hr Explorer 4 hole injectors
Flowtech Longtube headers 1.5"/2.5"
2.5" pipe
X pipe
Maggie high flow cats
DIDO Spintech Sportsman XL Muffler
All emissions retained.

My main question is how much more can I do without major tuning or driveabilty issues. It is MAF.

I've considered a set of GT40 heads but have seen mixed opinions about their use compared to E7's being the cost to benefit ratio. Also considered is a BBK twin 56 mm throttle body. Improved MAF sensor (if available) and a K&N FIPK.

Compared to stock, I can tell a big difference in torque and HP and would guess I am at least making stock BHP at the wheels maybe more.

Thanks BT