RawGtPower

I emailed AFR and told them what kind of heads would be idea for my stock 302 with all of my upgrades. He said that the AFR 165 competition package would be the best, and they come with the upgraded springs. They cost 1,747 dollars. I was looking at the 185's with has a better everything, and theyre cheaper than the 165's that the guy recommended. So i was wondering if anyone had problems with running the 185's on a stock 302. I have an e303 cam and hyperutectic pistons, trick flow track heat intake, and a bunch of other mods.

88BlueGT

The 165's would be best for your application but you should not have any problems running the 185's. Thats what I would do...

gspfunk

I don't know if the 2.02 valves on the 185's would have clearance issues or not. The guy at AFR said the 165's (1.94?) could have problems at .530....

RawGtPower

yeah, but now im depating whether or not to just say screw the heads and get a supercharger.

r.barn

If your thinking that route maybe try this guy's ported heads and a supercharger

http://www.thumperoforangepark.com/

silver91gt

I have a rebuilt 308 with speedpro hyper pistons and AFR 185 heads, no problem with valve clearance, but the stock pistons will hit the valve.
they were the best mod I ever did.
if you get them, you will lose some low end torque because of the big valves, but it makes up for it in top end power.

any new head should be checked for piston to valve clearances before assembly.

Tims 88GT

if you have a stock short block they wont work. 2.02 intake and 1.60 exhause valve, you will need to notch pistons. the 165's are good heads i say go with them.

r.barn

If your thinking that route maybe try this guy's ported heads and a supercharger

http://www.thumperoforangepark.com/

RawGtPower

Great, now the GT40p heads are sounding good, and they are cheap as hell. Now i dont know what to do

r.barn

careful with GT-40p heads, hard to find headers that fit