Valve/valve seat questions, 308 heads
I had 2.02/1.60 valves installed in the 308 heads I have on my 340. It's a pretty basic process, the heads are opened up for larger valves and then cut to take the larger valve seats. These are my heads after the larger valves were installed. This set also got what amounts to a stage II port job, ended up flowing 264 cfm @ 0.500"
Here's the basic process. This is an old ford y-block, but you get the idea. You would want hardened seats installed afterward.
I had 2.02/1.60 valves installed in the 308 heads I have on my 340. It's a pretty basic process, the heads are opened up for larger valves and then cut to take the larger valve seats. These are my heads after the larger valves were installed. This set also got what amounts to a stage II port job, ended up flowing 264 cfm @ 0.500"
Here's the basic process. This is an old ford y-block, but you get the idea. You would want hardened seats installed afterward.
