How many cubes are you feeding with the AFR 165 heads, and what is the application?
These will not come with titanium valves. Those are a mega-dollar option, and are only used with highly aggressive solid roller cams.
I believe you can still order AFR heads directly from AFR. Look up the spring specs for the cam you intend to use, and share that with AFR. They can set the heads up specifically for your application.
As for rockers, Scorpion is an excellent rocker that is very affordable. What is extremely important is rocker geometry. Make sure to get an adjustable pushrod, and learn to determine proper geometry.
Are you choosing pedestal rockers for any particular reason? Heads with those are generally meant as a direct replacement on a Fox mustang, or something that came with them. Fresh builds will generally use rocker studs.
Engine is a 302 short block by ATK. So it might be bored out or it might not be not sure how much but it is a 302 block. Application is a daily driven truck with hedman shorty street headers, performer intake, and a 600cfm 4V carb with vacuum secondaries.
That is where I am confused because on AFR`s website it makes it sound like all heads come with Titanium valves but then it contradicts itself.
This is the page I am looking at with the head.
It states the springs it comes with are "PAC Racing Spring 1.290" OD Hydraulic Roller Dual Valve Spring, 140 lbs on seat, .600" maximum lift, Max RPM 6300-6500 (upgrades available)". I emailed them over the weekend but no dice with a reply as of now. I am fixing to head back to work so no time to sit on the phone and have a good discussion on this to ensure I get what will function properly.
All I know is these are the smallest cc heads with a 58cc chamber which should give me 9.5:1 compression. But the springs is one area I am concerned about along with how some people wrote reviews about how the valves are not all the same height and that the valve height variance is up to 0.030" for it to be in spec. That is another concern for me as that could force different shims or length pushrods for use with non adjustable rockers. Seems kind of counter productive to sell a emission legal head for use with oem style rockers but then pull something like that.
But in the end like I said above, only cylinder heads I found with a 58cc chamber for the 9.5:1 compression I want as well as 165cc port volume to give me good velocity for throttle response for a street engine.
This is for my old truck the one I was going to do the '96 explorer long block on. They jerked me around and jacked the price up from $2,500 to $3,500 changed the warranty where now I would have no warranty unless I get the 80-86 long block from them for $2,000. I can pick up this ATK 302 short block for $1,600 and getting everything to do a long block I will be around $4,500 but should make more power than the stock '96 explorer 302 rated at 200hp.
Only reason I am looking at pedestal is cause I like the old steel factory valve covers with the ford oval on them. I haven't found an aftermarket valve cover that would go with the stock look I am trying to achieve that would be able to hold adjustable roller rockers. I did find one that I might go with but I am still on the fence for it. Fixing to head back to work now so I will post after work with a link to the photo of the valve covers I was looking at as a possible replacement for the oem ones if they will fit a poly lock adjustable roller rocker.