Head ID
Drifting
Joined: Oct 2007
Posts: 1,458
Likes: 1
From: Collinsville MS
St. Jude Donor '08
Intake Exhaust
1969-72 3991492 350 2.02 1.6
I am not the head expert. Since they are pre 74, They may not have the hardened valve seats (leaded gas). At least I can bump it up for someone else to take a shot at.
1969-72 3991492 350 2.02 1.6
I am not the head expert. Since they are pre 74, They may not have the hardened valve seats (leaded gas). At least I can bump it up for someone else to take a shot at.
Le Mans Master
Joined: Mar 2004
Posts: 7,477
Likes: 1,495
From: Little Rock AR
That is an over the counter GM "service replacement" for the special high performance engines. This is essentialy the best factory replacement piece that most closely resembles what they used in the 1970 LT-1 engine. If you have them already I would definately use them. You can find more modern combustion chambers and bigger flow numbers in aftermarket heads but if you already have them it is hard to beat the price. They have 64cc chambers, big valves, screw-in studs, guideplates, etc. All the good stuff.
-Mark.
-Mark.
