Originally posted by 88stang5.0
ok i am shifting bout 5400, manual, 2500 on rebuild bottom, has ferrea race valves, the spring kit is for the cam from summit trick flow. and the head has no porting.
Good valves and spring kit! I use the same spring kit with my stock heads. That TF kit is good for a .550 lift, so make sure that your gross valve lift, with cam and 1.7 rockers, does not exceed that amount. Other than that, for a N/A application, I would have milled the heads, but that is just me. Overall, I would have expected to see some increase. It would have been nice to have know the HP numbers before and after the changes. If money is real tight, try to get to one of the dyno days that this section sponsors. You can get two pulls for $40 with Air/Fuel numbers. That will give you a good starting point and it will let you know where your peak numbes are.