1. Welcome to For Trucks Only !

    We are a community of American Brand Pickup Truck and SUV owners. Join now! Its Free!

    Dismiss Notice

Help!

Discussion in 'General GM Truck Discussions' started by 85Rusty, Oct 27, 2013.

  1. 85Rusty

    85RustyWell-Known Member

    Messages:
    421
    Likes Received:
    10
    Joined:
    Jun 15, 2011
    Location:
    4 Corners, CO
    I couldnt think of another title. I have a 90 suburban: TBI 350/700r4 4wd

    Problem 1: the motor rejected rod #2 so I got with a buddy and snagged a 350 from him that was in a 68 camaro.

    Specs: 72 c10 block/fuelie heads/ possible cylinder work/ bigger cam/ Eddie performer rpm intake. That being said, I'm not so sure the knock sensor is going to like the cam size. Were gonna find out.

    Possible problem 2: the 700r4 is a gen 2 so there is no speedo cable involved. Just the speed sensor.

    Here's where I'm hoping someone has a solution. If I hook up this transmission and install a carb and 4 pin ignition module in the factory tranny, will it still shift right? I know the motor will start and run, but don't know if the computer will still shift the tranny right. I'm almost positive torque converter lockup will have to be hooked up to a push button, that is no problem. Can someone help me out here....
     
  2. 85Rusty

    85RustyWell-Known Member

    Messages:
    421
    Likes Received:
    10
    Joined:
    Jun 15, 2011
    Location:
    4 Corners, CO
    No ideas guys?
     
  3. bikinkawboy

    bikinkawboyWell-Known Member

    Messages:
    178
    Likes Received:
    5
    Joined:
    Nov 12, 2013
    Location:
    Renick Missouri
    Just happened to check the chevy forum. So did you get any of your issues worked out? As for the knock sensor, they're basically the same thing as the push button igniters on BBQ grills. On the grill, the snap you hear vibrates a quarts crystal, which then produces a spark. With a knock sensor, it's the same thing. A knock or ping is nothing more than a shock wave, which vibrates the crystal in the sensor and sends an electrical pulse to the computer. When the computer senses this, it retards the ignition. So as long as you use the module the sensor "talks" to, it should function as intended. Up to a point I guess, because the ignition can only be retarded so much electronically.


    Any more, tranny operation is integral with the engine. For instance, on my '03 Caravan, the tranny won't lock up until the tranny oil temp reaches a certain point. In cold weather, I may drive 5 miles before it locks up while in warm weather, pretty much right off the bat. The CPUs on cars anymore do almost everything including ignition, fuel injection alternator control and shifting. So to answer your question, I don't know for sure with your GM products. As for the electronic speedometer, the speed sensor is a simple Hall Effect pulse generator, the same thing that's used to monitor crankshaft position, tachometer signal and many other things. If you could get an electronic speedo suitable for GM products, that would work. I say for GM because The big three speedos operate on different numbers when it comes to the pulses per mile the sensor produces. I can't remember for sure right now, but I think GM operates on about double the number of pulses per mile as does Chrysler products. In short, put a GM speedo on a Dodge and it's going to show about half your true ground speed. Sorry I couldn't be of more help.
     
  4. 85Rusty

    85RustyWell-Known Member

    Messages:
    421
    Likes Received:
    10
    Joined:
    Jun 15, 2011
    Location:
    4 Corners, CO
    Thanks that helps
     
  5. bikinkawboy

    bikinkawboyWell-Known Member

    Messages:
    178
    Likes Received:
    5
    Joined:
    Nov 12, 2013
    Location:
    Renick Missouri
    Oh Rusty, cute kid! Don't worry, she probably thinks you and mom are the greatest people in the world right now, but wait until she gets to be 13-15. You guys will suddenly get really dumb! But maybe not, of my three girls, I managed to stay halfway smart with the youngest one, so I guess 1 out of 3 ain't bad. Both boys did manage to retain their respect for the old man's knowledge of stuff, although the oldest (now 25) had and still has troubling times. From him I learned that the worst thing that can happen to a 17 year old boy is to have a 146 IQ. While he was smarter than most people, he didn't have the experience or self control we older guys have. My parental advice is to tell your kid or kids every day that you love them and don't be afraid to express affection even, in public.

    Oh, I have really good friends in Delta and Grand Junction. Have spent a lot of time out there during the last 30+ years.
     
  6. 85Rusty

    85RustyWell-Known Member

    Messages:
    421
    Likes Received:
    10
    Joined:
    Jun 15, 2011
    Location:
    4 Corners, CO
    Thanks! She's an adorable handfull
     
  7. 65 sporty

    65 sportyWell-Known Member

    Messages:
    381
    Likes Received:
    104
    Joined:
    Aug 8, 2015
    Location:
    Marlette, Mi
    Old thread but did you get it swapped? The only problem I see is the speedo if you don't use the injection. The lockup can be handled easily.
     
Loading...