what rear end do i have?

zdeckich

Amateur Racer
May 10, 2013
233
0
0
Fort Worth, Texas
how do you tell what rear end you have? i have a 1978 malibu 2 door came originally with a 305. i assume its a 7.5 im wanting 4.10's with a posi should i keep the rear end or do something else?
 

TURNA

MalibuRacing Junkie
Jul 6, 2003
6,028
1
36
Socialist NY
if you are going to spend the money upgrade to a GN rear or Ford 9 inch.

IMO any money into a 7.5 rear is a waste.
 

woody31

Frequent Racer
x2^^^^that being said,,i wish i had got a 9 inch,,, i have a collection of broken 7.5 rear ends,,,,BUT,,,I am on a strict budget,,so i have to make do with what i can get,,,like 28.00 bucks on posi parts,,or my gears from ebay,,,but after the house is paid for,,we are gonna back half it,,,everytime those rear tires bark,,chirp,, over,,roll down the widow and toss a ten dollar bill,,,when it breaks ,,count up all the 10 dollar bills,,thats how much it will cost the next time,,go with 8.5,,pay now,,pay later,,but you will pay eventually,,,good luck,,cheers,,,
 

Sleeper86

Member
Aug 6, 2013
9
0
0
918
You can posi and get c clip eliminators. I ran 12's all day long in my last malibu 4.10 7.5 mini spool without any problems it all depends on how much you are going to put to the ground. I was on a budget and made due with what I had.
 

prairiehotrodder

Pro Stocker
Dec 17, 2005
1,571
2
38
43
Melfort Saskatchewan Canada
four wheel drive s-10's often have 3.73 gears with a govloc posi unit. If your not making much power it will do the trick.
 

zdeckich

Amateur Racer
Thread starter
May 10, 2013
233
0
0
Fort Worth, Texas
yea i was looking for some 4.10 or 4.11's anf i should be around the 400hp range
 

BuWaGone

Amateur Racer
May 22, 2003
188
0
0
Hawaii
If you wanna gamble go 7.5 or be safe and find a 8.5 10 bolt or go 12 bolt. I've seen a 7.5 live behind a 12.0 sec car and break behind a 14 sec car.
 

Blue Knight

Frequent Racer
Mar 23, 2012
383
0
0
dont forget, 2.73 -3.08 gear sets only work on a series 2 carrier. you need a series 3 carrier to run 3.23's and up.
 

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