6degrees of total timing.14 to 1 comp 77nos 59fuel its a cross plate so that's times 2 . I think it went fat and couldn't clean up. left good on this pass and layed over at 8k shifted it picked up then burned up . did not change the timing from the previous 3 passes just shortened the rampsHe hasn't even said anything about his tune. No one has any idea about n/f ratio (pills). But I can tell you 100% that you have too much timing for the given tune. Start there.
If you are gonna tell him it's too much fuel, which I quite possibly is, shouldn't we ask what he has first?
420 cid sbfWhat is engine combo ?? What fuel, plug, cam, quench, chamber size ??? That jetting could be better but is not terrible. SJ
420 cid sbf
dedicated nos cam(cant find specs)
11 ngk plug
piston is 20 in the hole
chamber is 62
ive been running this eng for awhile .it was freshened up over the winter just don't have the time to go test as much as I used to.