don't remember this being posted before.i've got my heads apart on my 73 400 block, putting new valves and springs on. the heads have the old umbrella rubber type seals. i have new seals that i bought for my 88 chevy truck, they fit the guides but are different for intakes and exhaust. my question is would the newer style seals work and would they do a better job?

 

yes if the fit the guides they'll work and yes they'll do a better job than o rings or umbrella seals

 

thanks ede