Re: One of ? L89 Nova for sale at Russo and Steele
 

Name one 1970 car that came with alum. heads. I don't know of any. https://www.yenko.net/ubbthreads/imag...lins/dunno.gif

Re: One of ? L89 Nova for sale at Russo and Steele
 

18 1970 big block Chevelles got the aluminum heads.

Re: One of ? L89 Nova for sale at Russo and Steele
 

What casting are those Alum Chevelle heads? I just checked my Colvin book for '70-75 and don't come up with any alum heads for that time except the '71 074 castings. All 70 and up had tapered seat spark plugs, so I was wrong, even the 842 castings would be incorrect.

Re: One of ? L89 Nova for sale at Russo and Steele
 

Mr.L-89.I would be curious to know what wayne Bushey of National Nostalgic nova thought about the L-89 as a legitimate L-89 car.i have spoke to Wayne quite a few times about a possible L-89 car.Mr.L-89 ,it great your commenting on the car;i think most of us want to believe there is a original L-89 nova;i think it is mostly the 074 heads ;if the car was a 69 with .,say a 842 head it would be an easier shoein.chris

Re: One of ? L89 Nova for sale at Russo and Steele
 

[ QUOTE ]
Jim, the car in discussion is a 1970 model year Nova...not 1969. Just wanted to be sure you knew that.


[/ QUOTE ] OHHH, I'M AWARE OF THAT.... https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: One of ? L89 Nova for sale at Russo and Steele
 

What was the compression ratio on the 71 LS6 Vette ? It was low as I recall.

Re: One of ? L89 Nova for sale at Russo and Steele
 

1971 Corvette LS-6 454ci compression ratio 9:1. 425 hp @5600, 475 tq @4000. Has a domed piston.

Re: One of ? L89 Nova for sale at Russo and Steele
 

I am going off of memory but I thought you needed to modify the dome of a high compression closed chamber piston because it was too close to some part of an open chamber head. If the motor was out did it get rebuilt with new pistons? If so would the old pistons still be available for inspection?

Re: One of ? L89 Nova for sale at Russo and Steele
 

Kim
I currently know about 3 of the original 18 1970 L-89 factory assembled SS Chevelles.
They reportedly came w/842 heads..
They are still on this earth today and documented.

Re: One of ? L89 Nova for sale at Russo and Steele
 

[ QUOTE ]
Kim
I currently know about 3 of the original 18 1970 L-89 factory assembled SS Chevelles.
They reportedly came w/842 heads..
They are still on this earth today and documented.

[/ QUOTE ]

Post photos please.