11r 190 on 92 stock bottom end?

VA Stang Guy

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Apr 13, 2020
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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.
 
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96pushrod

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May 15, 2018
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The odds of a 11r head having ptv issues on a stock piston are pretty slim. It’s always a good idea to check, but you should be fine with an e cam.

Bigger cams than that have been done with stock bottom ends and 11r combos
 

VA Stang Guy

Member
Apr 13, 2020
12
5
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Virginia
The odds of a 11r head having ptv issues on a stock piston are pretty slim. It’s always a good idea to check, but you should be fine with an e cam.

Bigger cams than that have been done with stock bottom ends and 11r combos
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.
 

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Ragtop50

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May 31, 2017
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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.
 
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Reddevil91

10 Year Member
Mar 3, 2010
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You will be fine. I have stock bottoms end in my 91, I have an old F cam, and installer TF 11r190s with TF 1.6s and push rods and clearance was fine.
 
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