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Author Topic:   rear ends?
posted February 11, 2002 01:32 PM
I am putting a 9in in my car this year and I was wondering which length is best.. I have a 54in,55in,59in,60..its a stock frame in the rear but putting leafs under it..the frame is 46in wide ...

posted February 11, 2002 06:05 PM
I'm defiantely no rearend guru, but I think the main things you need to take into account are keeping your total rear width narrower than the front and of course keeping it wide enough to clear your frame and inner fenders. For both of these items you'll need to take into account your tire widths and what kind of wheel offsets you'll be using. If you can reply back with what car you are using then I'm sure someone can give you a real close number figure for which to use.

redneck bubbas racing
posted February 11, 2002 06:10 PM
If memory serves right the metric cars have a 54.5 rear width. Not sure about that or not, but I think its right.

posted February 12, 2002 09:09 AM
Pickle, Blanep is right on, a more narrow rear track is better,and you can adjust with offsets. I would like to tell you to use the 54 in., But just stating overall width of the rear end doesn't tell the whole story.

Depending on the make and model,Ford has alot of different track widths,and different pinion offsets.That is to say that the yoke is not centered between the axle flanges,pick-ups have more offset than car rear ends.

So,depending on make and model,You only have 1 in. difference in overall width between the 54 and 55,but you could have several inches difference in pinion offset between the two.

My advice is to use the one that will allow you to keep your yoke in the same lateral position as the stock one.Of course,if by some strange set of circumstances,your engine is moved to the left,one should make allowances.

posted February 13, 2002 07:37 AM
thanks guys I remesured the rear I want to use and it is 55 not 54.. will see what I have to do ..

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