Hey everyone. Thanks again for all the help on the oil pan thread.
I have a chance to buy an older set of Indy 426 1RA, they have a 2.380 valve and the 1.940, does anyone know if they will fit with a 4.280 bore? I have CP pistons that are 13.08:1 compression, they have an intake valve relief which at the widest part of it is 2.450 and tapers down to a 2.250 and no valve relief on the exhaust side. I also have no info on the pistons besides the brand and that there a 13:1 piston. Thanks.