Hi guys I’m fixing to buy some heads for my 92gt. I keep seeing great feedback about the 11r 199cc heads. Just wanted to make sure I won’t have any issues with ptv clearance on my stock bottom end 92gt. Car has a small cam that I believe is a e cam.
Reason I ask is because the 190cc version has a 2.05” intake valve vs the 170 having a 2.02 sized intake valve. I’ve used 5-6 170cc ones on stock bottom ends over the years and they all cleared great. I just noticed the 190cc has larger valves so wanted to ask.
When you say 170s, I think you may be referring to the older TW 170s which is not the same as the 11R 170 heads. The 11R 170 and 11R 190 would be about the same for PTV clearance, but a TW 170 head would not. The 11R heads do have better PTV clearance due to the valve angle.
Very true. I called trickflow and was told I will have plenty of clearance. Going to get a custom cam by fall but wanted to use what was already in the engine for now.