This is a discussion on LT1 Heads within the LT1 forums, part of the Vehicle Specific category; Is there a big performance difference between the stock aluminum heads on a Z and the cast heads on an ...
10-12-2007, 06:49 AM #1
- Join Date
- Mar 2007
83 Z28 new project
- 98 Formula WS7-sold:(
Is there a big performance difference between the stock aluminum heads on a Z and the cast heads on an Imp SS. A friend of mine needs new valves and springs and I got a deal a while back on a set of cast heads for a hundred bucks, but he kind of wants AFR's, but he's also on a tight budget. Just need some info so I know what to tell him.
10-12-2007, 12:21 PM #2
Flow wise, no, but the irons heads weigh significantly more.
11-06-2007, 10:18 AM #3
11-06-2007, 05:20 PM #4
You can run more aggressive timing w/ the aluminum heads before detonation
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