maxpower_454

iTrader: (7)

Do 8.8's suck less power than a 9" or are they the same in that aspect?

bjamick

iTrader: (31)

8.8s do not suck as much power as the 9". I have an 8.8 in mine but of course never had a 9" either so no back to back testing.

78buturbo

iTrader: (1)

plan on 2-3tenths thats what i have read in my research because im thinking about using a 8.8 in my malibu not not sure what im doing

MeentSS02

iTrader: (11)

The 9" by design should eat more power due to pinion placement, but does it really matter? The only thing slower than a car that suffers from excessive drivetrain losses is one that can't make it off the line because it broke.

muddyjimmy

iTrader: (15)

I am in the same boat with this question. I am looking at buying a 12 bolt or a 9" really soon. Either one should fit my strength requirement just fine but at my current power levels I would like to keep the loss low. Is a 9" that much worse than any other rear?

MeentSS02

iTrader: (11)

The internet is your friend:

http://www.chevyhiperformance.com/te...nd_comparison/

swoop

iTrader: (1)

I just put a 9 in over the winter, car ran the same times 12.32-12.33 as it did the last time out with the 10 bolt.

muddyjimmy

iTrader: (15)

Sorry, I thought I was on the internet.

Thanks for the link.

maxpower_454

iTrader: (7)

Doesn't answer the original question though.

MeentSS02

iTrader: (11)

The 8.8" is very similar in design to a 12-bolt, and from the link:

That is about as concrete of an answer as you'll find on the subject. Finding someone that has had both and took the time to do a before/after with the same gear ratios, etc. ain't gonna happen.

maxpower_454

iTrader: (7)

Agreed. Now knowing the 8.8 is a similar design to the 12 bolt, your answer makes more sense. Thanks

Valkyn

iTrader: (8)

Car craft ran the same car with a 12 bolt, dana 60 and then a 9" back to back on the dyno, the 9" came in with 7 less hp and 4 ft/lbs less torque than the 12 bolt. So if a 8.8 is less efficient than a 12 bolt, I imagine it's not much better than a 9".

Heres the link - http://www.carcraft.com/techarticles...p/viewall.html