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  1. 7

    Crate engine swap advise please?

    Here is the Crane type. It limits, what I'm calling the bottom of the stroke. No vacuum end: http://m.summitracing.com/search/department/ignitions-electrical/section/ignition-components/part-type/distributor-replacement-parts?keyword=Limiter This limits the top:
  2. 7

    Crate engine swap advise please?

    It takes 9"-10" of hand pump vac to get the va to lift off the limiters fourth notch. This gave me 15*-16* of va. It takes 17"-18" for full stroke. Without the limiter, it takes 5" to lift off. This is why I asked about the limiters and choosing one that limits the top, not the bottom. So it...
  3. 7

    Crate engine swap advise please?

    OK VA at 15*-16* Without VA. Plugged. Sputtered taking off from stop with light foot. Hammer down to 45, no rattle. Instead, sever sputtering. With VA. No sputter taking off from stop with light foot. Hammer down to 45, small rattle. And, sever sputtering. For rod selection I have: 6252...
  4. 7

    Crate engine swap advise please?

    Thanks. The AFR is ordered. I'm going out to set the va to 12*-15*. I'm going to take anything in that range for now if I hit it since it's a PITA. Back in a while.....
  5. 7

    Crate engine swap advise please?

    I don't think so. Thinking back, I was a 12* base when I went out to do some 0-60 runs. Then I added 4*. I must have test drove but don't remember hearing anything at that point. The next morning I went for the 40 mile drive. I think I was just light footing it through town and onto the...
  6. 7

    Crate engine swap advise please?

    Are you down with the change to 15* va, as the next change?
  7. 7

    Crate engine swap advise please?

    Also, if you don't mind me asking, why were the R45TS plugs run in '71 at .035", but not again 'till '76 but gapped to .045"? I assume the gap difference was because of the HEI coming in somewhere in between those years. Whats the T and TS designate? Is the 45 hotter then the 44? If so...
  8. 7

    Crate engine swap advise please?

    OK. I see in my Haynes book that for a '73 350, base timing is 8* for manual, and 12* for auto. Why did base timing go up from 4* for manual, and 8* for auto for a couple years in '73-'74? Doesn't it have something to do with the HEI, va and emissions. Anyway, it says my base...
  9. 7

    Crate engine swap advise please?

    When base was 8* BTDC @ 550 RPM, va plugged, light zeroed, I found that if I set the light for 21* and reved to 3000 RPM, that TDC mark ended back up a 8* BTDC. So if the light is working that should be the mechanical, 21*. 8* + 21* = 29* BTDC with no va. If I've been following this should be...
  10. 7

    Crate engine swap advise please?

    I put the 9" springs back in. I found base time to be 8* on the tab at 550 RPM with the va plugged. And with the light zeroed I need to adjust the light 8-9* to line the TDC mark up with 0* on the tab. Only 1* different. That looks good to me so far. I hooked up a hand pump. Now with 8*...
  11. 7

    Crate engine swap advise please?

    Someone once said put the silver and blue springs in the centrifugal. Not recently. I think that's more of a fine tuning thing right? Stock are in there now.
  12. 7

    Crate engine swap advise please?

    I was talking about step up springs when referring to Rich. I guess you are talking about the springs related to the mechanical. My bad. Step up springs are next.
  13. 7

    Crate engine swap advise please?

    Oh. I see you said change the springs. I promised Rich I would be doing this next.
  14. 7

    Crate engine swap advise please?

    OK. We got it down to 8-10* base, no va, and whatever mechanical. Idle was more labored, bogged taking off rattled when dropping the hammer. Stopped when letting off. I won't even "think" about the 5" springs and their roll in this.
  15. 7

    Crate engine swap advise please?

    Oh, good point. I thought too little could cause it too. And the wrong springs too. Read here.
  16. 7

    Crate engine swap advise please?

    Well, on a 0-20 scale it was at 11* of va, 'till 3 changes ago. I was at 11* of va the first 5 of 8 changes, since this last problem. Rich thought I should be at 15*of va.
  17. 7

    Crate engine swap advise please?

    This crank cam thing seams to be debatable if I read you and Rich correctly. I am trying to speak two languages I think. I think Rich knows this. I would like to speak one, crank. Rich explained earlier that distributor manufactures may spec in cam degrees. Correct me Rich if I've got that...
  18. 7

    Crate engine swap advise please?

    OK. But, why, when I pull the va by hand pump, when the base is set at 12* on the tab, with the light zeroed, does the light need to be adjusted 20* to line up the TDC mark back up with 12* on the tab.
  19. 7

    Crate engine swap advise please?

    Could be. This is the first it's been explored. Would that be from a lifter going out. Not pumping up? That might explain why it seamed to appear later in a trip without changing anything.
  20. 7

    Crate engine swap advise please?

    It came with the new distributor I put in. Summit Blueprint GM http://www.summitracing.com/parts/SUM-850001R If you follow the link and look bellow, there is a link to instructions. That is a PDF download that matches the hard copy I speak of that cam with the part.
  21. 7

    Crate engine swap advise please?

    So now. I started by checking what I was at pre-drive. I unplugged the va and pluged the carb port. I zeroed the light. I read the timing on the tab at 10* @ 580 RPM. I adjusted the light 'till the TDC mark on the balancer lined up with the 0* on the tab and I had adjusted the light 12* from...
  22. 7

    Crate engine swap advise please?

    Gotcha. I'll do it next.
  23. 7

    Crate engine swap advise please?

    I admit. I may be using and interpreting the light wrong.
  24. 7

    Crate engine swap advise please?

    I hear ya, but one thing at a time.
  25. 7

    Crate engine swap advise please?

    I don't know that, or the type of piston, or the bore.

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