What head marks are on 70-72 exhaust manifold bolts
04-25-2018, 05:33 PM
#1
Racer
Thread Starter
What head marks are on 70-72 exhaust manifold bolts
Are they all supposed to be double circle. If not, what are some of the more commonly used?
Last edited by Makonut; 04-25-2018 at 05:36 PM.
04-25-2018, 05:50 PM
#2
Drifting
The ones I took off of my 72 some were single circle and some had a letter N in the middle and I also had some that were double circle. My car is pretty original and the previous owner had it judged at Bloomington and NCRS. Hope this helps