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02-17-2003, 11:10 PM | #1 |
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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...
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'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 |
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8.8
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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, 02:17 AM | #3 | |
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Re: Rear end size?
Quote:
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02-18-2003, 07:30 AM | #4 |
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Mach 1...looks like a 30 inch to me...
So second question, is 8.8 the factory size?
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'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 |
347ci of HORSE POWER!!!
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yes
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02-18-2003, 03:50 PM | #6 | |
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Re: Rear end size?
Quote:
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NewEngland Auto www.baystategearheads.com -91 Mustang Coupe, ex 4cyl (sold) -99 F150, 3" lift, 35" Procomps, Magnaflow exhaust |
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02-18-2003, 09:27 PM | #7 |
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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.
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'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 |
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Uhhhhh........no. The 8.8 will hold 4.10s just fine.
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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 |
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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...
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'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 |
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well, if it makes you feel any better, i had an 8.8 with 4.10's, so your friend is clueless.........
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02-19-2003, 07:37 AM | #11 |
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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.
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'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, 08:30 AM | #12 | |
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Quote:
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NewEngland Auto www.baystategearheads.com -91 Mustang Coupe, ex 4cyl (sold) -99 F150, 3" lift, 35" Procomps, Magnaflow exhaust |
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02-19-2003, 05:14 PM | #13 |
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go to the racer walsh site and you can order a brand new 8.8 with 3.73 or 4.10
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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 |
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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"
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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 |
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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.
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'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 |
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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
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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 |
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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..
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'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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