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  1. Need differential measurements

    Transmission - Rearend
    Hey guys! I'm going to a swap meet tomorrow and I'm looking to upgrade my 1970 Skylarks rear end from an 8.2 to an 8.5. I can already distinguish between an 8.2, 7.5, and 8.5 no problem. Here are things I need to know: what will bolt right in? what car would they come from? (I know BOP axles...
  2. Rear Differential/Trans Popping sound

    Hotrodders' Lounge
    I have a 64' Stude Commander, 3-speed on the tree, and whenever I try to go in reverse the car hesitates, and then will start going. Typically I will hear a loud popping sound either when I start to move in reverse, or shortly after I enter first gear. It is difficult to determine if the sound...
  3. 1967 firebird rear end question

    Transmission - Rearend
    i have a gm 7.5 rear differential in my 1967 firebird and it has 2.73 gears and was wondering should i change the gears to better ones or change my whole rear differential to a 8.2 or 8.5 differential? thank you
  4. chevy 10 bolt diff

    General Rodding Tech
    Just looking for opinions here. Working on my 36 chevy pickup,and once I got it fired up and going I found the rear gears are way to tall. 70 in 3rd start loosing speed in 4th, and who knows where 5th is. I also have the correct rear end but it is 4" to narrow. OK opinions, would it be less...
  5. The cost of re gearing a GM 8.5" 10bolt

    General Rodding Tech
    I have a 1979 Camaro with a 3.08 posi was wondering how much it would cost to have someone change it to a 4.11 thanks
  6. 1970 rambler engine change?

    Hi I just brought a 1970 rebel rambler. It had no motor, I have been told I can put a 250 ford 6 in it. I was just wondering if I hAve to change anything to make it fit? I'm also curious. What diff do they run? Some ppl are saying ford is that true? I would really appreciate it if someone...
  7. Ford differential Id information?

    Transmission - Rearend
    I looked high and low for my Ford differential and it's not listed on any Id information sites and I have turned the internet upside down and I still can not find the information! Tag Info # S229C #3L27885H29 Can anybody help out? KJ
  8. what is it ? ID this Chevy posi deferential

    Transmission - Rearend
    I have a 67 Camaro. i am doing a full restoration (see my photos) anyway i am now to driving stage and the posi is not posi-ying or how ever you say that. i know its posi because when jacked up in neutral the tires spin the same way. When in 1st gear they spin opposite direction with very little...
  9. Differential Decoding Help?

    Transmission - Rearend
    Hello! I was hoping someone could help me decode the stamping marks on my differential. It's been painted over, and the original metal tag (if there was one) is gone, so this is all I have: I THINK this is what they say, feel free to correct! DIF 41 4868A C5?? 3417 Here are the links to...