Put the 7.5 power valve in and went for a drive almost cures the hesitation it will only do it once and awhile now. Before I checked the forum I just put the 37 shooter in the primary but no pump cams as they didn't have any and I didn't go to the other place.
Half throttle from a stand still or from a roll the engine just lays over and will almost stall, WOT and the engine will just cut right out.
Just to try it I put a 25 in that I had pretty much identical result. Put the 31 back in a cruised for the night. Stomp it off the line it has no snap but no bog it just slowly picks up rpm. Sadest 340 out there in that I can;t even get it to do a burnout on nice fresh pavement. It'll just sit there holding the brakes and listen to the engine grunt.
Engine shop tells me my 3.55 gears and 2800-3000rpm stall isn't enough and off the line performance will always be that way.
