Stock 4V Exhaust Seats vs. Hardened Seats?
The shop I found who is likely the one to do my 4V head machine work (valve grind, clean the head surfaces) on my heads is recommending replacing the OE Exhaust Valve Seats with hardened seats. What is the consensus? Is this needed?
This gentleman has a lot of experience racing 351C's in drag racing so is well versed on them. He says due to the unleaded fuel we run, he recommends this?