Quote: The 5.7 being a 3.92" bore and the 6.1 being a 4.05" bore, do you see any real drawbacks using a 5.7 block besides the obvious lower cubes? Was wondering if there would be an issue with airflow around valves, especially if stepping up to larger valves like in the 6.1 heads or the newer Apache 6.4 heads.
There is a guy on the LX forum that has a stroker 5.7 that had ported eagle head running itnto the mid 11'w he switch to a set of ported 6.4 apache heads and went .2 quicker in the 1/4 mile. Keep in mind his block was bored .020 over. A member Matt on this board posted the apache head on a standard bore 5.7 and the intake valve looks close to the cylinder walls
