Ahh,,, The best China has to offer...2.02/1.60, 60cc chambers, 210cc runners. The casting isn't too shabby at all, I was pleasantly supprised.
They are from a company called performance engine and machine. They are assembled with good stuffs tho. They assemble to your specs. They don't have a crazy ammount of options, but you choose the valve size, valve material, springs exct... I went with 125# installed 300# open, and ss valves.Did you get those from tristate? Procomps? Better check out the valve train.
125 on the seat will barely hold a comp xe series of cams, 150 on the seat is the minimum I like to run, dont plan on using any cams that have an aggressive lobe, valve float will kick your ass in 2 minutes flat. Need way more spring, unless your running a flat tappet, then your fine.
correct AFR sets them up from the factory and thats the old 11/32nd's valve train package (which is why everyone always commented on the junk parts they came with), they have since started using 8mm valvetrain with 135 minimum on the seat.Your site says your AFRs are assembled with 120# seat pressure springs????