anyone out there replace there l98 with a 350 vortec (L31)and use a edelbrock base .car ran fine before motor swap,motor also ran fine.i now have a long cold crank time and a cold stumble off the line with light throttle,goes away when warm,and i cant run the 8 degrees of base advance that i had before.when warm or ran for 2 minutes or more will start right up.stock tpi setup except the base,edelbrock headers,new dist,new fuel pump,new 02 sens,new maf,new cts,160 tstat,new tps,new cap rotor plugs wires,running 5 degrees of base advance,any more and it pings on the top end with 93 octane.iat sensor relocated off plenum.car runs great otherwise,just those 2 stupid issues,any help would be greatly appreciated.!!!!!!!!!!!!!!!!!!!!