I just rebuilt an 87 5.0 h.o. basically stock, mild head porting,long tube headers, duals no cats. when cold stalls on idle, once it warms up it has a rough idle. sounds like a nasty cam. other than that runs great razor sharp throttle response. good power. no codes, checked all sensor voltages and baro freq. everthing seems normal. it was converted to maf. I didn't check the cam. it was in the engine when I baught it. everything else had ford markings. any ideas? Thanks hank