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#1
08-21-2023, 02:40 PM
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Is this an 8.2 or 8.5 rear
At work right now so limited to the pictures on my phone. I hope to get more pics tomorrow. Based on these pictures of the rear in my 69 Lemans, is anyone able to tell if it’s the original 8.2 or an 8.5? BTW, it has 4.33: gears
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project Last edited by grivera; 08-21-2023 at 02:49 PM. |
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#2
08-21-2023, 02:42 PM
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Judging by the cover, an 8.2.
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It takes considerable knowledge just to realize the extent of your own ignorance. Dr. Thomas Sowell |
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#3
08-21-2023, 04:09 PM
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8.2.
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Wernher Von Braun warned before his retirement from NASA back in 1972, that the next world war would be against the ETs! And he was not talking about 1/8 or 1/4 mile ETs! 1) 1940s 100% silver 4 cup tea server set. Two dry rotted 14 x 10 Micky Thompson slicks. 1) un-mailed in gift coupon from a 1972 box of corn flakes. Two pairs of brown leather flip flops, never seen more then 2 mph. Education is what your left with once you forget things! |
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#4
08-21-2023, 04:16 PM
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Thank you. At some point I’ll have to decide on what to do with the rear. Right now I want to make the car reliable so that when it’s time for bodywork it is mobile/moveable under its own power. I’m not ruling out building my spare 455 block and using my spare set of 310 85cc KRE heads, but that is long term. If I go that route will need a stout rear.
If the current #s matching 350 proves to be solid I have no issue cruising and enjoying it. This will lead to a decision point of put street gears in the 8.2 or get a stout rear for what may come down the road…
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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#5
08-21-2023, 04:20 PM
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Well at least you can swap in some more street friendly 3.36 gears if you decide to keep that rear end, that’s the lowest gear set numerically that will fit your posi unit.
You’re gonna really hate driving around with 4.33s before long.
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1964 Tempest Coupe LS3/4L70E/3.42 1964 Le Mans Convertible 421 HO/TH350/2.56 2002 WS6 Convertible LS1/4L60E/3.23 |
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#6
08-21-2023, 05:01 PM
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It can be a rush on street tires! Esp going into 2nd gear.
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#7
08-21-2023, 05:08 PM
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Quote:
most people focus on the negative there is however the other side of the coin, when it comes to deep gears 4.11 to 4.56 and a 3.75 stroke they can be alot of fun as well also 4.33 isnt as common of a ratio and if its a OE gear can have some resale value there isnt very many available either new or old I have a 1970 8.2 F-body 3.36 posi and its the 2 piece carrier with cones yours appears to be a 1 piece unit is that because of bolt in axels vrs C'clips?
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If your not at the table you're on the menu A man who falls for everything stands for nothing. Last edited by Formulas; 08-21-2023 at 05:20 PM. |
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#8
08-21-2023, 05:27 PM
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Lets not forget Dairy Queen.
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#9
08-21-2023, 05:37 PM
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Quote:
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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#10
08-23-2023, 12:59 AM
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I wanna know how that thing go's geter done, Please
GT |
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#11
08-23-2023, 05:24 PM
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9795082 is a 1969 rear made using gray iron, not as strong as the 9795084 nodular iron unit.
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So long, farewell. |
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#12
08-23-2023, 05:54 PM
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Thank you!
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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#13
08-25-2023, 09:41 PM
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Is it an Eaton style or Cone?
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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#14
08-27-2023, 03:48 PM
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Quote:
Auburn unit. https://justdifferentials.com/auburn...ntiac-8-2.html Oh, and it's a cone style... https://auburngeardiffs.com/cone-clu...differentials/ Or, OE 2 pinion https://forums.maxperformanceinc.com...d.php?t=823573
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So long, farewell. Last edited by Held for Ransom; 08-27-2023 at 04:14 PM. |
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#15
08-27-2023, 02:30 PM
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Your question interested me so I went hunting on-line. I found this and think it answers your question if you look through the whole thing like I did. Hopefully it will be of help. (I personally think you have a detroit true trac on page 14 but review and see what you think.)
https://www.eaton.com/ecm/groups/pub...ct_3167716.pdf
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"No replacement for displacement!" GTOAA--https://www.gtoaa.org/ |
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#16
08-27-2023, 04:53 PM
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9" Moser is SO MUCH EASIER, LOL!
Tom V.
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"Engineers do stuff for reasons" Tom Vaught Despite small distractions, there are those who will go Forward, Learning, Sharing Knowledge, Doing what they can to help others move forward. |
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#17
08-27-2023, 07:00 PM
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Thanks all
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Will Rivera '69 Firebird 400/461, 290+ E D-Ports, HR 230/236, 4l80E, 8.5 Rear, 3.55 gears 66 Lemans, 455, KRE D-Ports, TH350, 12 bolt 3.90 gears '64 LeMans 400/461, #16 Heads, HR 230/236, TKO600, 9inch Rear, 3.89 gears (Traded) '69 LeMans Vert, 350, #47 heads: Non-running project |
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