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  1. 4

    Ported vacuum advance or manifold. Let's debate!

    What are the specs on dons vacuum can? Do you have a chart? Most cans for big block mopars start advance at 7-8" vacuum, and with a 9-1 compression engine, a long duration cam and an auto trans it will not help as they will not idle in gear with high enough vacuum to matter, in fact they die...
  2. 4

    Ported vacuum advance or manifold. Let's debate!

    Throttle blade position nearly closed is what stopped run on, more timing allowed you to close the primaries kind of like an idle stop solenoid on a 6bbl.
  3. 4

    Ported vacuum advance or manifold. Let's debate!

    Correct, it is wise to consider total timing as what the engine can take without damage, in a car at max load, wide open throttle . For a bb mopar that will be 35-38 degrees total if the fuel can support it. When you are cruising at speed with a light load it will tolerate more timing, from the...
  4. 4

    Ported vacuum advance or manifold. Let's debate!

    And while we are on the subject, mopars were the cars that had gear reduction starters so they could tolerate more initial advance, gm cars would not start hot. Gm muscle cars were also the ones that ran hot, and overheated all the time, not the mopars. I also never said manifold vacuum advance...
  5. 4

    Ported vacuum advance or manifold. Let's debate!

    With manifold source your cruise vacuum advance degrees will stay the same, your idle advance degrees should go up depending on the idle vacuum and where the vacuum can starts, your throttle position should close a bit. You will always want to be sure your initial and mechanical combined are...
  6. 4

    Ported vacuum advance or manifold. Let's debate!

    Thank you, and yes it was in direct response to #14, I should have constructed it as a stand alone comment to avoid the drama.
  7. 4

    Ported vacuum advance or manifold. Let's debate!

    Exactly, no way to have a constructive discussion.
  8. 4

    Ported vacuum advance or manifold. Let's debate!

    Your ignorance is amazing. Always trying to stir sheet up. Everyone else figured it out. Fixed it for you.
  9. 4

    Ported vacuum advance or manifold. Let's debate!

    No vacuum advance is not the best for a street driven car.
  10. 4

    Can worn valves mimic rich idle mix?

    I think it's just condensation, my fuel injected 318 does that with 3" single exhaust and a 36" dynomax truck muffler. I have to remember to cardboard my garage door or black and rust particles on white. Engine idles over 18" vacuum.
  11. 4

    Max fuel pressure for Carter 3705 carbs?

    The only way I could see enough oil in the valve covers to flood over the guides is if someone grooved the #4 journal on the cam and did not put a .040-.060 restrictor in the block to the heads, or the pushrods are hollow with lifters that will oil thru them.
  12. 4

    Max fuel pressure for Carter 3705 carbs?

    You probably can swap the heads, it just will not be perfect. Every engine I build gets the heads put on a bare block, milling and intake fit corrected, mark them left and right, then I scratch the cylinders on the head from the oil pan area and get the valve job and porting done from there. So...
  13. 4

    Max fuel pressure for Carter 3705 carbs?

    Ya we have all been there with pulling the motor, but I think it might be the answer based on what the machine shop said.
  14. 4

    Max fuel pressure for Carter 3705 carbs?

    Yes those look uncut, I don't think that would puddle oil above the guide boss once the engine is hot. Looks the same as the 906 head. Positive seals are fine but I don't think that is the problem. After an hours run time all the oil should be burned put off the head and manifolds and it should...
  15. 4

    Max fuel pressure for Carter 3705 carbs?

    Do you have a pic of the rear of that head with the valve spring removed? I wonder if the guides are shortened a lot creating the perfect storm for you. Like others here I have run with no seals and not had smoking issues. Yes oil sitting in a puddle above the guide will run down even in spec...
  16. 4

    Max fuel pressure for Carter 3705 carbs?

    It is no bother, just want to see you get it fixed. I would be absolutely sure the intake is fitting perfect and no oil is migrating there before I pulled the engine. It does seem sudden for rings.
  17. 4

    Max fuel pressure for Carter 3705 carbs?

    By 4 ends I mean the intake face of the heads, not the China walls, I am assuming the intake has a gap there at the China walls and is not sitting up on those with no gasket, if it is you found your problem.
  18. 4

    Max fuel pressure for Carter 3705 carbs?

    Flat out gaskets makes a .100 thick set, I am sure there are others, felpro are .060. I use permatex pipe thread sealant on intake bolts, any pipe dope would work, or permatex #2. At some point you should put the intake on with everything clean, strips of clay on the 4 ends and a strip in the...
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