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  1. Crazydavez28

    7.4L EGR Information

    Ok had time to mess with it. If you are messing with your EGR setup here are some facts. Fittings in the manifolds are both the same 6400-14-12 7/8"JIC to 3/4"ORB This translates to a 1 1/16"-12 thread size in the intake and exhaust manifolds. EGR Tube is 7/8"ID and 20" Long Discontinued by...
  2. Crazydavez28

    Stock 7.4L turbo capabilities

    I am approaching 200k on my 2000 K3500 with stock 454 and plan on dropping in a new motor once the clock rolls over. Has anybody strapped some turbos or boost to one of these in stock trim and had reliable results? It's a CCLB so I have acres of room under the cab to rear mount some turbos...
  3. Crazydavez28

    No Noises, Not moving in any gear

    I've got a 97 Tahoe Engine and Tranny sawpped into a 79 El Camino stock PCM built tranny with a shift kit 1800 stall converter. I drove into town and parked the truck like normal. Came back outside and started up fine but will not move at all in any gear. Fluid is in great shape and when...
  4. Crazydavez28

    Fuel Pressure for 7.4L vs 5.7L

    I have an El Camino with a Vortec drivetrain in it and already suffered thru the high mileage damp hard starting issue. Now it just won't start without a shot of starting fluid in the PCV hole in the TB hat. Once running it does run but stumbles around and if shut-off will not restart without...
  5. Crazydavez28

    Shifter Locked

    I have a new to me 99 2D Tahoe with a toasted motor. When I brought it home it I could drive it around the yard to make sure everything functioned. I took it out for a rip in the back lot then backed it into the temporary resting place until I can get the motor built. I went out to try and move...
  6. Crazydavez28

    L31 with LT1 bottom end

    I just brought home an new to me 99 4x4 2-door Tahoe with a nasty knock. I have a couple standard bore blocks around but the crankshafts for both are toast. I found a cheap LT1 Impala engine nearby and after bringing it home the bottom end looks fantastic. I test fit the setup in my Vortec block...
  7. Crazydavez28

    Is my 5.7 4-bolt main?

    I just bought a non running 106k mile 99 4dr 4X4 Tahoe over the weekend and the motor has been messed with... the kid i bought it from said a rod bearing was blown but I get there and the plug wires are in the back seat and the distributor bolt is loose. I figure at this point I would rather not...
  8. Crazydavez28

    6.5 Diesel Exhaust on 454

    Got tired of no good options for exhaust on my 2000 K3500 CCLB 7.4L truck. Previous owner hacked it up pretty good. Gonna use factory down pipes since they are 3" until I get long tubes...need suggestions on that too. Diamond Eye single 4" turbo back exhaust. Going to cut off the downpipe...

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