I don't need convincing. Porting an polishing has been around for decades it helped a lot more with carbureted engines where the air and the fuel flow was smoothed out. This was done mostly after all the other tricks were used to get the most power out of the engine.
The L36/L26 and L67 heads are different, the SC heads have the injector bung in the head, the L36/L26 are in the manifold.
Smoothing out the air flow with FI is not as beneficial as it was years ago but hey its your time and your money, for the 12 hrs work and counting and the money you spent already a lot more could have been had IMO.
To properly port heads and manifolds a flow bench is a must for best results. For that sort of work I would sent it out to a shop that deals with this stuff as I don't have a flow bench or the experience with configuring the ports for what I want to achieve, HP, torque and at what RPM.
That all depends on the weight of the car, what cam is in the engine the amount of boost if any, converter stall speed or gear ratios, fuel used and delivery type and timing, all sorts of things. Everything has to work together properly to make the car really quick.
The L36/L26 and L67 heads are different, the SC heads have the injector bung in the head, the L36/L26 are in the manifold.
Smoothing out the air flow with FI is not as beneficial as it was years ago but hey its your time and your money, for the 12 hrs work and counting and the money you spent already a lot more could have been had IMO.
To properly port heads and manifolds a flow bench is a must for best results. For that sort of work I would sent it out to a shop that deals with this stuff as I don't have a flow bench or the experience with configuring the ports for what I want to achieve, HP, torque and at what RPM.
That all depends on the weight of the car, what cam is in the engine the amount of boost if any, converter stall speed or gear ratios, fuel used and delivery type and timing, all sorts of things. Everything has to work together properly to make the car really quick.