70 Chevelle 454 ls6 vs. Z06 ls7 [Archive] - Corvette Forum : DigitalCorvettes.com Corvette Forums

: 70 Chevelle 454 ls6 vs. Z06 ls7


woodyz vette
07-14-2005, 12:09 PM
Does anyone out there know how superior or if the new LS7 is superior to the almighty LS6 in the 70 Chevelle ?

That motor was a monster..

I know the hp rating is 50 hp higher in the LS7 than the LS6, but there are also arguments that the LS6 was far under rated as far as HP ratings.:huh:

moore_rb
07-14-2005, 01:05 PM
Well, let's run down the list:

1) Rated HP: 2006 LS7-505 SAE Net, 1970 LS6-450 (SAE Gross, which translats to roughly 390 SAE Net)
Winner- 2006 LS7

2) "Real world" horsepower: 2006 LS7- 500 SAE Net, 1970 LS6- probably 460-480 SAE Net
Winner- 2006 LS7

3) Rated torque: 2006 LS7- 470 lb/ft, 1970 LS6- 500 lb/ft
Winner- 1970 LS6

4) Weight: 2006 LS7- About 430 lbs, 1970 LS6- about 600 lbs
Winner- 2006 LS7

5) Fuel efficiency: 2006 LS7- about 22mpg (est), 1970 LS6- about 12 mpg
Winner- 2006 LS7

AllStar_15
07-14-2005, 01:22 PM
and the winner is...........2006 LS7!!!!!!!!!!!!!!!!!!! :laughing:

Chaz
07-14-2005, 03:13 PM
Put an LS7 in a Chevelle.... that'd be nice.

moore_rb
07-14-2005, 03:30 PM
Originally posted by Chaz
Put an LS7 in a Chevelle.... that'd be nice.

You'd definitley have lots of extra room under the hood...

You could climb in there and walk around the engine....

kamikazi
07-14-2005, 06:10 PM
Originally posted by moore_rb
You'd definitley have lots of extra room under the hood...

You could climb in there and walk around the engine....

Ok, put 2 :D

boytoy
07-15-2005, 10:50 PM
well, then there's the ability to put the hp down on the street . While the motors in the 60's and early 70's were over achievers the cars they were put into were not. Some of the comparisons seem close . However, on a twisty track it wouldn't be even close. 12 mpg for the LS6? well, if you treat it real gentle like maybe. 22 for the LS7....seems more possible.

so IMO the old V8 loses the contest hands down but undoubtedly sounds MUCH better than the LS7. IMO.

Also, it remains to be demonstrated how reliable the LS7 will be in the hands of thousands of drivers. It's lighter sure but that came with a price of much higher technology. Some of the LS7 components and metals sound more like rocket science-the motor is exotic compared to the LS6. New is not always better eg the Saturn V (alive and well in 1970 )was replaced by one of the most ridiculous and dangerous contraptions ever invented IMO.

Besides where ya gonna get gas for an LS6 today????