Re: 1970 L89 NOVA
I've got a couple points to make on this whole 1970 L/89 topic.
First of all, the only production aluminum head in 1970 was
the '074 ( ZL-1 & L-88 ). This head used a voluminous
combustion chamber in conjunction with the 427 ZL-1 & L-88
pistons. There would have been a total combustion chamber
mis-match as no 396 ( or 402 ) pistons existed from GM in
the 12:1 realm. So how do we account for this? If you put
a set of '074 heads on a 396 ( 11:1 ) back then, it probably
would have run like a dog. The 396 probably couldn't pull
enough air to take advantage of this head design.
Secondly, I thought there were no L/89 options in 1970.
Steve
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