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  1. 77-4speed

    gearing

    Glad I could help. By the way, I saw on Zip that you can get the 3.70 gears for $329. I had a local shop quote me $200 plus parts to rebuild the unit and $450 in labor to uninstall and reinstall the diff. You can remove the diff yourself. I did with the help of a fellow CAC member and I've...
  2. 77-4speed

    gearing

    It's all about torque. Remember your old bicycle? If you had the chain on the smallest sprocket (2.40:1) you had to push real hard to get it moving, but once you were moving you wouldn't have to pedal very fast to keep up the bikes speed. If you had the chain on the biggest sprocket (3.70:1)...
  3. 77-4speed

    gearing

    You can buy the new set of gears on an exchange basis and send the old gears back to the vendor. It is a job you can do by yourself but it is somewhat difficult to say the least. I imagine it would cost somewhere close to $600 to have the gears changed out, including parts and labor. I'm sure...
  4. 77-4speed

    gearing

    The "gearing" refers to the ring and pinion gear in the differential. It is the final gear that the engines power passes through before turning the wheels. I'm not sure what the automatics had as a rear gear but the L-82 manuals had a 3.70 rear gear. It's great for acceleration but hard on...
  5. 77-4speed

    True Dual Exhaust with Dual High Flow Cats and Flowmaster Delta 50's

    Wow Bob!! That sounds really mean. When I get my rear put back together I'm going to take some video of my exhaust just to see what it sounds like. Since I never let anyone else drive the car, I've never really heard what it sounds like :) I guess you had the exhaust shop do the custom...
  6. 77-4speed

    Starter heat soak

    You can also do the official GM "field fix" which is to remove the solenoid and there is a return spring inside. Clip a couple of windings off of the return spring and re-install the solenoid. That should take care of the problem. I don't remember exactly how many windings you should remove...
  7. 77-4speed

    Cleaning fuel injectors?

    I am starting to have some running issues with mine. It is idling somewhat rough and occassionally there is an off-idle hesitation. It is due for spark plug and fuel filter replacement which I will do shortly. The only reason I suspected the fuel injectors was because of the previously...
  8. 77-4speed

    Cleaning fuel injectors?

    I need to do the 100K mile tune-up on my "other" car. It's an Expedition. The F*rd dealer wants $150 plus tax ($162). I was just thinking that there had to be a better solution. I have found that you can send the injectors off to special injector cleaning shops for as little as $11 per...
  9. 77-4speed

    differential lube weight????

    thanks guys!!! I guess I'll just get the Penzoil. I know it's only a savings of $12 but it's the principal. I hate to pay just for a name and not for quality. :) Russ
  10. 77-4speed

    Advice on starter

    I haven't had any problems with the unit from Autozone. If you're worried though, I'd just spend the extra $20 or $30 and get the Delco unit. Personally, I've not had any problems with Autozone or Oreilly's so I don't mind using their parts. If I ever do have a problem though, it'll be Delco...
  11. 77-4speed

    differential lube weight????

    Thanks guys, I have already added 1 bottle of additive and I'm going to add another. I was told to get the Penzoil or other top-quality product of 80W-90 weight, but I read of someone using synthetic Amsoil at a weight of 145 in the rear. That weight kinda through me. Russ
  12. 77-4speed

    Cleaning fuel injectors?

    How do you clean the fuel injectors? Do you simply buy injector cleaner and soak them or what? I got a quote of $140 to clean mine and I don't think it should be that difficult. Thanks, Russ
  13. 77-4speed

    differential lube weight????

    Hi all, I was just wondering if anybody knows what the weight is of the official GM differential lube. The GM stuff costs $7 at corvettes of Houston and it is a ways to drive, but Oreilly's carries the Penzoil 80W-90 oil for $3 a quart. Just wondering if it's essentially the same stuff...
  14. 77-4speed

    Advice on starter

    It sounds like 1 of 2 things: 1) brushes are not making contact. This is very possible as they do not always wear evenly. Sometimes they will make contact, sometimes not, depending on the orientation. 2) could have a faulty neutral safety switch. If the switch is starting to fail it could...
  15. 77-4speed

    Heater problems

    cscarlson, In my car, the factory installed heater valve was operating, but only when the a/c was turned on. So, when the A/C was on all was well. However, when the A/C was off it was another story. After installing the shut-off valves the interior cabin temp dropped a lot. Unfortunately, I...
  16. 77-4speed

    Rear-end update

    nope, sorry. try corvettefaq.com
  17. 77-4speed

    The three most awesome words you wife can say

    Funny, I always thought they were.... "Can she join" :) :) :)
  18. 77-4speed

    Rear-end update

    Vmrod, I would love to have a setup like that on mine!!!! I can only imagine the headache and cost of doing that. You are lucky to have found it already finished. Bobchad, I thought about the VBP strud rods, but they are $120 and the ES bushings were only $19. Besides, I won't be messing...
  19. 77-4speed

    '81 Corvette Dream Mods WISHLIST (more ideas!!)

    Well, I think if you go directly to Jet-hott you can get the sidepipes/headers for around $1100. Install them yourself. It's not easy but it isn't complex and it just takes a day. I just replaced the U-joints, shocks, and rebuilt the differential. If you pull the differential yourself you...
  20. 77-4speed

    Rear-end update

    Bullitt, I have not bought a pit yet, but.......I do have a smoker box for my charcoal grill and a bunch of wood chips. If you think that is something we could manage I'm all for it :) I can't remember off hand exactly what cars we were talking about. I think you were going to bring over one...
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