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  1. Mackman

    318 Intake & Carb Advice

    I would be surprised if any of this helps without a cam change.
  2. Mackman

    318 Intake & Carb Advice

    I ran those gears on a 85 Dodge pickup with a 318. Really woke it up with a 340 Dual- plane with 600 cfm Holley and an up- graded cam. I used a Crane cam , I believe advertised duration was 260/262.
  3. Mackman

    Fuel sender float?

    Really? Do you have a part number ?
  4. Mackman

    Holes in manifold

    I may be mistaken, but I seem to recall those holes were originally tapped and a threaded “floor jet” was screwed into them. Over time they burned out and became bigger. I had seen them welded shut.
  5. Mackman

    Another worn fuel pump pushrod question

    I wore one out in about the same number of miles, replaced it with a hardened pushrod from Hughes Engines. So far so good.
  6. Mackman

    Sunoco race gas

    Maybe park it in the shop or equipment barn. Or leave it outside on a pallet and move it with the forklift when I need it.
  7. Mackman

    Sunoco race gas

    I found that PSC would be my best option.
  8. Mackman

    Sunoco race gas

    Are most of you able to source Sunoco race fuels local to you?
  9. Mackman

    Removing fuel sender (68 Coronet)

    As previously posted. I have removed them multiple times in a 67 Coronet and 69 GTX. Just let the axle hang, they come out easily without damaging the sender.
  10. Mackman

    Removing fuel sender (68 Coronet)

    You can get the sender out without lowering the tank.
  11. Mackman

    AFR Meter

    So with stock manifolds and dual exhaust with h-pipe, with no crossover in the intake manifold, where would the bung be installed?
  12. Mackman

    AFR Meter

    I am looking to purchase an AFR meter, so I'm looking for some recommendations. I don't intend to permanently install it in the car, just want to check and adjust my set-up, then put a plug in the weld-in bung. Looking forward to some input.
  13. Mackman

    Meter Match.

    I would be curious as to how you made out with it. I installed one on a 69 GTX. The meter match didn’t have enough adjustment. E is empty, but full is 3/4. Long conversations with their engineer, but no solution. The sender does it’s job.
  14. Mackman

    Electric vs mechanical fuel pump

    And then there's the dreaded pushrod dilemma.
  15. Mackman

    Fuel pump pushrods-Again

    Did you measure that pushrod? 3.220 is the correct length. Mine was wore .200, and though I could feel at the line that something was happening, it wouldn't pump any fuel. Installed a hardened pushrod from Hughes Engines yesterday.
  16. Mackman

    Fuel pump pushrods-Again

    I've come to the conclusion that it is probably NOT the pushrods fault, either too much pump spring pressure, or rough cam finish. More to follow.
  17. Mackman

    Fuel pump pushrods-Again

    Amsoil Z-Rod 10w-30.
  18. Mackman

    Fuel pump pushrods-Again

    In the spring of 2021 I installed a new OE style fuel pump on my newly rebuilt 440. 2,000 miles later, it quit running and I found the original fuel pump pushrod was wore almost a 1/4" and was not pumping fuel. I replaced it with another original equipment pushrod I had on hand. Sunday, 2200...
  19. Mackman

    Fuel/Temp Gauge issues

    I've had a couple "correct" replacement temp sensors that aren't correct and don't agree with each other.
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