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  1. J

    Smog thoughts

    Getting rid of the converter MIGHT help with top end, (less back pressure, lower pumping losses), getting rid of EGR will GREATLY help part-throttle performance, re-working your advance curve can give a good boost, but removing the AIR pump won't do much that you can feel, but it will reduce...
  2. J

    Smog thoughts

    That is correct. Part of the EPA's effort to try to force us to replace our vehicles with computerized Japanese cars.
  3. J

    Changing from 80 square headlight back to 74-78 round headlight question.

    Sell the old bezels if you don't want them. Do not throw them in the garbage, as they are no longer being made, only plastic ones made in some foreign country. J.B.
  4. J

    Loud Knock After Replacing Intake Manifold

    Get a mechanic's stethoscope and listen all over the engine when it is running, including the crank case and the pan. This will help tell you where the noise is coming from. Hope you didn't bend a rod. J.B.
  5. J

    Dieseling sometimes when hot

    800 RPM is too high, unless you have a pretty hot cam. Try slowing it down to about 500 RPM in Drive, (automatic), or 550 with a stick. J. B.
  6. J

    What motor is best for a swap on a K25

    If you are going to use it as is was intended to be used, you should put in a high torque motor, meaning a low RPM cam, as you need lots of low RPM torque, not high end horsepower. I would stay away from LT1, LS engines, and other Hi Po engines, as they are mainly RPM engines. Now if you just...
  7. J

    1985 K5 keeps breaking starters, help!

    Strange. My 292 is drilled for two different starter noses, one for staggered bolts, the other for inline bolts. I just wore out one with the inline bolts. J. B.
  8. J

    GMC Grill

    Now a GMC logo that could go on in place of the Chevy bowtie would work until a true GMC grille could be found. J.B.
  9. J

    GMC Grill

    Only place you can find them is at swap meets or on E-Bay. I found mine for a 73 - 75 last month on E-Bay. It cost well over $300.00, but it is in very good shape. J.B.
  10. J

    GMC Grill

    They think there is not enough demand to justify tooling up for them. What might be an acceptable alternative would be to make GMC logos that will bolt on in place of the Chevy bowtie. James
  11. J

    I’m interested in swapping out the TH350 for a 700R4

    He probably means the converter is trying to multiply torque, so the engine is revving higher than it would if he was on level ground. J. B.
  12. J

    10W-40 for Chevy 350

    Now they are telling people to use 5W 30 or even 5W 20. I for one refuse to. J. B.
  13. J

    10W-40 for Chevy 350

    Your valve stem seals are probably gone. If you aren't using more that a quart every 750 miles, I wouldn't worry about it. In case you are wondering, 10W 30 and 10W 40 are both 10W oil. They have polymers in them so that they will not get thinner as their temperature goes up - 10W 40 has more...
  14. J

    350 Chevy with carb 0 oil psi

    That is something I wished I could do on the 81 I used to have. That electric oil pressure gauge was erratic. Wish I knew how to weld. James
  15. J

    Installing windshield in a Squarebody

    I have one of each, but I think I will have the pros do it - if they break it, they replace it, but if I break it, I have to replace it. James
  16. J

    Installing windshield in a Squarebody

    So true.
  17. J

    Installing windshield in a Squarebody

    My first time installing a windshield. I have seen on U-Tube that the rubber channel is supposed to go on the pinch-weld and the windshield installed that. We have been trying that method and broke two windshields. I always though that you put the channel on the windshield and rope the...
  18. J

    New crate engine oil priming/ ignition timing impact if the distributor is mis-installed

    What I do with GM engines from the mid 50s on is use a large screwdriver that I removed the handle from. I put that screwdriver shank in an electric drill and use it to spin the oil pump, which I first pack with vasoline. Much easier to prime that way. You can tell when the oil system is...
  19. J

    Timing W/ Manifold vacuum

    Never tried it on Chevy engines, but I know from experience that 70s AMC engines didn't like that - they would at first try to jump smartly off the line, but then hesitate and spit back at you if you hooked up to vacuum advance to manifold vacuum. J. B.
  20. J

    74 k10 going 55 mph is at 3,500 rpm

    A good way to tell is to jack the rear end and have a couple of buddies turn both rear wheels together one complete revolution, and you see how many revolutions the driveshaft turns. If you have 3:73 gears, your driveshaft will make a little less than four complete revolutions, but if it makes...
  21. J

    74 k10 going 55 mph is at 3,500 rpm

    3500 at 55 MPH? You must have 4:56 gears for the engine to be revving that high. Others are saying that maybe your trans isn't upshifting into 3rd, but I have a hard time believing that you wouldn't be aware of a problem like that. J.B.
  22. J

    454 460 horsepower swap into a 1987 V10 with 700r4

    I don't think a 700R4 can handle the torque that a 454 will produce. I would get a Turbo 400 instead. And with tires that big, you are going to have to use much deeper gearing. Maybe around 4:10, or else 1st gear will be much too tall. Mike
  23. J

    350 Chevy with carb 0 oil psi

    My 81 Square Body used to do that. Sometimes read fine, other times very low, sometimes zero, but it had hydraulic lifters, and they would have collapsed and clattered it oil pressure really was zero. Tried to swap in the mechanical oil gauge of the 73 - 75 trucks, but would have had to use a...
  24. J

    1973 Monte Carlo Very Rare Factory Sunroof - $6,500

    Sweet! My dream 73 Monte Carlo is a 3 speed manual car. I think that was the only year it was offered with a 3 speed. Must be as rare as a hen's tooth. J.B.
  25. J

    Breaks come on hard when coming to stop sign

    Might also be leaking wheel cylinder(s).

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