Rear end size?

Nixon1 · 02-17-2003, 11:10 PM

Hey guys...how can I tell what size rear end I have? I've got 4.10's in it and if my memory serves me right, there's 12 bolts on the differential cover... Would this be a factory sized rear end? Someone told me the factory for these years can't hold 4.10's. Thanks!

By the way, car is in the shop right now so I cant double check any of this..but I also think my factory axle code was M, for the wimpiest rear..like 2.73 or something...if that makes a difference or not. Probably not...

NotchJohnson · 02-17-2003, 11:47 PM

Mach 1 · 02-18-2003, 02:17 AM

Quote:

Originally posted by Nixon1
Hey guys...how can I tell what size rear end I have?

Put your butt next to a mirror and have a look over your shoulder....

Nixon1 · 02-18-2003, 07:30 AM

Mach 1...looks like a 30 inch to me...

So second question, is 8.8 the factory size?

cyberstang5.0 · 02-18-2003, 08:15 AM

HiFlow5 0 · 02-18-2003, 03:50 PM

Quote:

Originally posted by Nixon1
[BSomeone told me the factory for these years can't hold 4.10's. [/B]

If you mean from the factory, no. But they can be added.

Nixon1 · 02-18-2003, 09:27 PM

No, what I mean is my friend says the 8.8 rear physically CANNOT HOLD 4.10's. I never believed him, but he thinks he knows everything and a bag of chips about Mustangs...I gotta hand it to him, there is a lot he knows, but I can't believe that the 8.8 can't actually hold 4.10's.

NotchJohnson · 02-18-2003, 10:22 PM

Uhhhhh........no. The 8.8 will hold 4.10s just fine.

Nixon1 · 02-18-2003, 11:13 PM

Ok he's just a loser then. Go yell at him. Lol, he's on the boards..he's got a white 65 with a 289 and a 3 spd auto currently...forget his username but he's a terrible speller and loves German...

Mach 1 · 02-19-2003, 01:27 AM

well, if it makes you feel any better, i had an 8.8 with 4.10's, so your friend is clueless.........

Nixon1 · 02-19-2003, 07:37 AM

Part that makes me even more mad is that a friend of ours who's also a Mustang lover, they both ganged up on me telling me I was wrong and that I can't have 4.10's unless I've got like a 9 inch rear or something... Idiots..argh.

HiFlow5 0 · 02-19-2003, 08:30 AM

Quote:

Originally posted by Nixon1
No, what I mean is my friend says the 8.8 rear physically CANNOT HOLD 4.10's.

I just want to add that even the 7.5" rear can hold 4.10's. I almost got them for my 4cyl, LOL.

BLACK85GT · 02-19-2003, 05:14 PM

go to the racer walsh site and you can order a brand new 8.8 with 3.73 or 4.10

5.0 Pony · 02-20-2003, 04:47 PM

The 8.8 will hold up fine, Summit sells a set of 5.67 gears for an 8.8, i dont think they would sell something that wont work. They also sell the same ratio 5.67 gears for a 7.5"

Nixon1 · 02-20-2003, 09:09 PM

Will 4.10's fit in a 9 inch? The same guy now says that he thought I had a 9 inch rear, and that 4.10's won't go in a 9 in.

Tony Frank · 02-20-2003, 09:30 PM

yup sure do.....

i have an 8.8 rear end with 4.10's and my dad has 4.30's in his 9 inch

Nixon1 · 02-22-2003, 03:15 PM

I see what's up now...we got mixed up here... According to him, 4.10's will fit in an 8.8, where 4.11's won't....we were getting the two mixed up cause they're so close..

02-17-2003, 11:10 PM	#1
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Rear end size? Hey guys...how can I tell what size rear end I have? I've got 4.10's in it and if my memory serves me right, there's 12 bolts on the differential cover... Would this be a factory sized rear end? Someone told me the factory for these years can't hold 4.10's. Thanks! By the way, car is in the shop right now so I cant double check any of this..but I also think my factory axle code was M, for the wimpiest rear..like 2.73 or something...if that makes a difference or not. Probably not... __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-17-2003, 11:47 PM	#2
NotchJohnson Registered Member Join Date: Oct 2001 Location: Florida Keys Posts: 593	8.8 __________________ 89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.

02-18-2003, 07:30 AM	#4
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Mach 1...looks like a 30 inch to me... So second question, is 8.8 the factory size? __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-18-2003, 08:15 AM	#5
cyberstang5.0 347ci of HORSE POWER!!! Join Date: Jul 2001 Location: Houston, TX Posts: 1,416	yes

02-18-2003, 09:27 PM	#7
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	No, what I mean is my friend says the 8.8 rear physically CANNOT HOLD 4.10's. I never believed him, but he thinks he knows everything and a bag of chips about Mustangs...I gotta hand it to him, there is a lot he knows, but I can't believe that the 8.8 can't actually hold 4.10's. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-18-2003, 10:22 PM	#8
NotchJohnson Registered Member Join Date: Oct 2001 Location: Florida Keys Posts: 593	Uhhhhh........no. The 8.8 will hold 4.10s just fine. __________________ 89 notch-finally not stock!! ported gt40's, ported cobra intake, 65mm tb, 75mm maf, mac cai, lt's,prochamber, fms 1.6 rr, 125 shot.

02-18-2003, 11:13 PM	#9
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Ok he's just a loser then. Go yell at him. Lol, he's on the boards..he's got a white 65 with a 289 and a 3 spd auto currently...forget his username but he's a terrible speller and loves German... __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-19-2003, 01:27 AM	#10
Mach 1 Registered Member Join Date: May 1999 Location: Georgia Posts: 3,866	well, if it makes you feel any better, i had an 8.8 with 4.10's, so your friend is clueless......... __________________ 2002 GT 1993 GT (SOLD) '93 Mustang GT RHC member #142

02-19-2003, 07:37 AM	#11
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Part that makes me even more mad is that a friend of ours who's also a Mustang lover, they both ganged up on me telling me I was wrong and that I can't have 4.10's unless I've got like a 9 inch rear or something... Idiots..argh. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-19-2003, 05:14 PM	#13
BLACK85GT Registered Member Join Date: May 2002 Location: Tampa,FLORIDA Posts: 340	go to the racer walsh site and you can order a brand new 8.8 with 3.73 or 4.10 __________________ 5.0, Holley heads, 1.7 Scorp Rockers, Stealth intake, Holley 600 carb, Holley Mech. Fuel pump, MSD 6Digital, MSD distributor, Hotchkis upper/lower rear control arms, FMS B Springs, 3:73 (8.8) rear. Production # 9,377

02-20-2003, 04:47 PM	#14
5.0 Pony Registered Member Join Date: Jun 2002 Location: Nebraska Posts: 127	The 8.8 will hold up fine, Summit sells a set of 5.67 gears for an 8.8, i dont think they would sell something that wont work. They also sell the same ratio 5.67 gears for a 7.5" __________________ 1988 Mustang 5.0 LX Convertible -Mac Cold Air Intake -K&N Cone Filter -9mm FMS Spark Plug Wires -Hedmann Headers 2.5" O/R H-Pipe -Flowmaster 40 series 2.5" Catback

02-20-2003, 09:09 PM	#15
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	Will 4.10's fit in a 9 inch? The same guy now says that he thought I had a 9 inch rear, and that 4.10's won't go in a 9 in. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

02-20-2003, 09:30 PM	#16
Tony Frank Registered Member Join Date: Feb 2001 Location: Brooklyn originally, but Grand Rapids now Posts: 309	yup sure do..... i have an 8.8 rear end with 4.10's and my dad has 4.30's in his 9 inch __________________ Grand Valley State University Senior Accounting and Finance Major 1985 Mustang GT 19,000 ORIGINAL miles, E-303 cam, edelbrock performer RPM intake, holley 600 cfm carb, MAC headers, windage tray, 8.8 rear end with 4.10 gears, 4"cowl hood, 5lug conversion, 04 Mach1 wheels. http://www.mustangworks.com/cgi-bin/moi-display.cgi?1501

02-22-2003, 03:15 PM	#17
Nixon1 Registered Member Join Date: Jan 2003 Location: Palm Bay, FL Posts: 432	I see what's up now...we got mixed up here... According to him, 4.10's will fit in an 8.8, where 4.11's won't....we were getting the two mixed up cause they're so close.. __________________ '91 Mustang GT 5.0 AOD Daily Driver Current stats: NEW 302 short block, E-303 cam (@.050, 220/220, .498/.498, 110 degrees), 1.6 roller rockers, Performer RPM heads (aluminum, 1.9/1.6, 60cc chambers), Cobra intake, Granatelli 75mm MAF, Billet AFPR, Equal-Length Shorty Headers, Off-Road X Pipe, Flowmasters, 4.10 POSI 13.73 at 103.8, ~2.2 60'

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