1970 L89 NOVA

[Belair62]

I have since cut my hair. Did the camel have enough humps for you ???

[nuch_ss396]

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

[442w30]

I thought there were 18 L89s built in '70, and those are understood to be L78 Chevelles?

[Mr70]

[ QUOTE ]
I thought there were 18 L89s built in '70, and those are understood to be L78 Chevelles?

[/ QUOTE ]
I believe this to be true,and I know of at least 3 documeted L-89 1970 Chevelles/Elcaminos today.
There are too many EARLY issued factory/dealer materials supporting them selling new here,as well as in Canada,before being swiftly discontinued by the release date of the LS-6.
The 1970 Chevelle L-89's used the #842 Al. Heads,which is correct for an 11:1 compression.

[SS427]

[ QUOTE ]
I thought there were 18 L89s built in '70, and those are understood to be L78 Chevelles?

[/ QUOTE ]

I have documentation on two of these cars and have met and followed the restoration of one of these cars very closely. The car has been discussed quite frequently on Team Chevelle.
Rick

[Tommy]

I hope one is out there. I dunno if it is or not but they were talking about it long before 70... This isn't concrete by any means but read what this guy wrote about the 68 Chevy II on the right hand column. Sorry the scan isn't any clearer.

http://img.photobucket.com/albums/v2...es/speed68.jpg

Tommy

[Stefano]

[ QUOTE ]
[ QUOTE ]
I thought there were 18 L89s built in '70, and those are understood to be L78 Chevelles?

[/ QUOTE ]

I have documentation on two of these cars and have met and followed the restoration of one of these cars very closely. The car has been discussed quite frequently on Team Chevelle.
Rick

[/ QUOTE ]

Two years ago a local 1970 Chevelle was pulled out of a long hybernation. It was believed to be an early LS6. (no engine)

A build sheet was found that very day verifying L89.

The production number of these cars has to be very low, yet at least a few have been found.

Big Blocks were build at the Tonawanda Plant, which is very close to the Canadian boarder. You would think that word of mouth, from the plants performance minded employees would have leaked out to at least some friends and family of the GM employeees and that we would have at least a few documented Canadian exemples, at the very least.

If any were produced they would be the exception which proves the rule. Kinda like the one and only X22 Copo Camaro or M40 1970 L78 Camaro.

Just my opinion.