Blown 79 Z28 Camaro Make it Better Project

Discussion in 'Project Progress' started by Bandit723, Oct 1, 2016.

  1. 7/3-SplitRS

    7/3-SplitRS Veteran Member

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    Mar 26, 2014
    Pecatonica IL
    Not bad. Not bad at all. Glad to see some progress on the carb setup!
     
  2. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Thanks!....The carb change out is so far more than likely the best thing i have done so far. I am sure there are other factors that come into play "addition of the X-Pipe and cam change" but i did pick up a ton of low end response hit the throttle in 3rd and it will break the tires loose engine does run smooth tru the power band.

    With the old carb the low end response was poor even with the last engine build had to tap the brakes to get the tires to let loose. Kinda felt like driving a chevy vega at low speeds Lol.

    Pro-Systems was awesome in helping out to figure out on how to tune this thing. Usual forum responses are not so helpful seems to be do the obvious but at the end of the day don't know how stuff works or don't take the time to explain it.

    I could do a bit more tuning yet but am happy with where i am with the engine. Next steps is to get the 700R4 shifting right. I did post a question in the forum and jthomas picked it up so going thru his steps and they are good. also reached out to a trans guy in appleton wi that has seen this thing before. I am sure we will get it working right.
     
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  3. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
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  4. hoppin5478

    hoppin5478 Veteran Member Lifetime Gold Member

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    Jul 20, 2015
    Tucson, AZ
    The converter article was interesting and helpful. I haven't looked in to it to much yet but I'm getting ready to use a similar set up in a 51 Chevy pick up with a small block and 4L60e I have laying around. The converter might be a good route to take vs an adapter.
     
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  5. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Just started looking at doing the conversion. Not sure if GM axed the gen I stuff yet or not I will find out on Tuesday but i am sure there are other options out there.
     
  6. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Well did some digging into doing a 4L85E conversion trans and torque converters are available from GMPP that will fit a Gen I engine along with a stand alone TCM module that is rumoured to work well but, while there are other considerations to be met like the trans brace, driveshaft, shift linkage the cost of doing this is outrages. Estimated cost for the latest stuff is about 6K not worth it.

    GM did offer a 4L85E who knows when and was a 460 ft lbs torque rated trans that included a torque converter part # 19156257 better cost. The local GM dealer worked his magic and found stock in Lansing MI so i know i still can get my hands on one. In my opinion i can work with that but the showstopper is that the torque converter can not be verified as to what it fits up to gen 1 or a LS? Called GM direct they pointed me to a GMPP dealer that was clueless, to say the least was frustrating.

    The Older offering if the fitment was known by the folks that built it would be around 4K
     
  7. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Well picked up a new Item for the Camaro it is a used 4L80E trans. After sorting thru the internet BS made sense to go in this direction. Not a lot of these conversions seem to have been done but i am willing to give it a go...

    Had looked at again going with a new trans 4L85E but the cost is just outrages buying a 4l80E that has been rebuilt with a stage kit + what is needed to do the conversion is not that cheap as well. Plan is to either try and rebuild this myself or at least do a pernuf solution and get some of the bench work done at a shop in wis rapids or if it is cheap enough just have a shop do the rebuild labour.

    Was surprised at the price swings at the you pull junk yards were asking for these things range was from $1900 to a low of $500. Was reading a internet post that a way to get one was to metal recycler that will pull parts but don't keep cars on the lot or just a few so bingo have a business out by rapids that does just this and picked the trans up for $300.

    Pic's of the trans. It is a 2003 out of some chevy HD 2500 model.

    20170907_171725.jpg

    20170907_171828.jpg

    Quickly figured out this thing is heavier than snot. Handy 30 year old bench to the rescue.

    20170907_172532.jpg
     
    Last edited: Sep 7, 2017
  8. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Did a bit more digging into what i just dropped 300 bucks on pretty sure i decoded the trans tag year built + julian date but not sure what the MJ means? also does the P mean HD? Trans also has a part number of 24208421.

    Just throwing this out there to see if anyone knows....

    20170907_191118.jpg

    20170907_191128.jpg
     
  9. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Post to myself so i don't forget

    4L80E (1991-1996)
    Fitting Location Thread Size Flow Direction
    Upper ¼" Pipe Return/in
    Lower ¼" Pipe Cooler feed/out

    4L80E/4L85E (1997 & later)
    Fitting Location Thread Size Flow Direction
    Rear ¼" Pipe Return/in
    Front ¼" Pipe Cooler feed/out
     
  10. Bandit723

    Bandit723 Veteran Member

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    Oct 1, 2016
    Waupaca WI
    Stopped by the local GM dealer today we decoded the trans tag. I am good with what i purchased. Confirmed it is a MT1 trans that came out of a HD trans that was used in the two wheel drive 2500 series vehicles in 2003.
     

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