Gears & Axles - Rear width?




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TN94Z
01-03-2008, 09:02 AM
What are the questions to ask when deciding on narrowing the rear? My car is track only and I am about to cut down a 9" and was just curious how much I should cut it down. Is it just a "what tire do I want to run" question? Or is there more to it than that?


EPP
01-04-2008, 05:27 AM
Basically it depends on what wheel offset you are going to use, but narrowing the rear past three inches per side can get into relocating suspension parts. Bob

TN94Z
01-04-2008, 07:31 AM
Thanks. I don't want to go that much.


Steve Burger
01-04-2008, 09:38 AM
Will you Mini Tub? That will have a large impact on wheel decision. Are you going to keep the stock rear springs and suspension parts? Again this will impact tire and wheel choice.

TN94Z
01-04-2008, 10:45 AM
I will be mini tubbing the car but want to keep the stock rear springs and suspension where they are for the time being. I plan to make around 900+hp depending on whether I decide to go turbo or nitrous. Right now I think I am going LSX 427 with a F1, but with the production halt on the blocks that depends. I have the stuff for a 408 with an 88mm turbo at a friends house that we thought about throwing in the car. Can you also suggest a wheel and tire size? I have been running the 275/60 dr's and want to make sure I have enough room to support future combos.

Steve Burger
01-04-2008, 12:28 PM
Keeping the stock springs will limit what you can do. You could fit a 28x10.50 without the minitub. If you are going through the trouble I would dump the factory springs and perches and go a different way. Odds are you will need to cut that section out to minitub anyway.

At 900 HP I would look at a 29.5x10.50 at least. I know there are people that go 7's on a 28 or smaller. It ain't easy or cheap. A taller tire is more forgiving and easier to tune.

Just a few thoughts.

TN94Z
01-04-2008, 12:36 PM
Thanks. If I dump the springs and perches, what are my options?

Steve Burger
01-04-2008, 01:34 PM
I replied to your PM.It may be best to just chat a bit and go over options.