Zl-x
Melting Slicks
Joined: Oct 2008
Posts: 2,154
Likes: 69
From: Regina Sk Canada
My Motion perf book tells me that the ZL-X was a 4 bolt main 427/650 hp solid lifter motor. .588/.605 phase III cam 12.8-1 compression,open chamber heads, 850.950 0r 1050 carb
Last edited by Grumpy 427; Apr 10, 2011 at 09:32 PM.
Melting Slicks
Joined: Oct 2008
Posts: 2,154
Likes: 69
From: Regina Sk Canada
Cast iron heads, open chamber 2.19 int and 1.88 exh. this was called a competition engine. These heads were used on lots of versions of the 47 and 454 from Motion depending on what your needs were?
Melting Slicks
Joined: Oct 2008
Posts: 2,154
Likes: 69
From: Regina Sk Canada
Your better off building a low compression 540. Will make over 700 hp and tq and still look lixe a 427, plus will be a pump gas motor with 10.25-1 compression. I know because my buddy has one.
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