c4/302 is there a block plate?

Discussion in 'Technical' started by AppMaverick, Jul 7, 2011.

  1. AppMaverick

    AppMaverick Member

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    Hey! Do our cars need a block plate between the 302 and C4 trans? Maybe also, do I need a different cover plate than was on the 250 with the same trans?
    Thanks
     
  2. AppMaverick

    AppMaverick Member

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  3. Ryan

    Ryan Ford Addict

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    Yes there should be a block plate. I dont know for sure if the 250 and 302 use the same plate, but i'd assume that since they use the same transmission bellhousing then the block plates are the same.
     
  4. AppMaverick

    AppMaverick Member

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    Thanks ryan! That was kinda my line of thinking when I put the 250 blockplate on it. But then I was like... uhhhh I should check this. Thanks again! (y)
     
  5. strokermaverick

    strokermaverick Member

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    I have already been down that road. I tryed to use the 250 six block plate a few years ago, but the starter hole is off.:tiphat:
     
  6. Ryan

    Ryan Ford Addict

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    Why would the starter hole be off if its the same transmission and the starter bolts to the transmission? You sure you arent referring to the 170/200 block plate?
     
  7. strokermaverick

    strokermaverick Member

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    The flexsplate has to be changed to use the transmission, hense the starter hole is off.
    It's all because of the different flexplates.
     
    Last edited: Jul 7, 2011
  8. Ryan

    Ryan Ford Addict

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    Ya the flexplate is a different part number, but the starter is the same part number. So same bell housing, plus same starter, should mean same starter hole I woud think. I coud see if it was a different starter then it could be offset different and have a different plate hole but same mounting hole.

    I just dont see how it could be different from 250/302 with same trans and same starter. thats strange.
     
  9. strokermaverick

    strokermaverick Member

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    Well all I know that you can do is, try it for yourself. I wound up having to use the plate from behind the v-8, for the starter to line up correctly. I thought I would use the 250 plate because it was aluminum v/s steel. I thought it would be a dirrect swap also.:Handshake
     
  10. Ryan

    Ryan Ford Addict

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    you got my mind wondering now. I looked up in my Pioneer flexplate book and the 250 takes a FRA-203, the 302 takes a FRA-204. So I looked at the specs.

    FRA-203= 13.3" OD 157 tooth 12-14 pitch 28.202 oz weight
    FRA-204= 13.3" OD 157 tooth 12-14 pitch w/o weight

    with the same specs and the same starter I dont see where the difference would be to the starter hole location on the block plate. I deal with parts catalogs for a living so things like this baffle me on where the difference is and why its not the same part.
     
    Last edited: Jul 7, 2011
  11. AppMaverick

    AppMaverick Member

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    hmm... maybe I'll wait before torquing everything down lol. Ryan, what you say makes perfect sense.
    Stroker, I could Totally see it happening haha.
    That's why I asked :clap:
     
  12. strokermaverick

    strokermaverick Member

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    Ryan, you are exactly right about the flexplate. I remember compairing the two and only finding that the 250 flexplate was different by missing the weight. I had just stuck a 351w in my '75, had everything bolted up, went to put the starter on and it would not line up. I was even using the c-4 that was in my '75 with 250 six cylinder. The only way I could get the starter to go on was to cut the starter hole into, on the engine plate. I remember having to grind the engine plate's starter hole to actually be able to get the starter on. Needless to say that engine plate was swapped out for the 351W's steel plate. Maybe this could only have happened in my personal bizzaro world. I hope the 250 engine plate will work for APPMaverick, but it did not work for me.
     
    Last edited: Jul 7, 2011
  13. AppMaverick

    AppMaverick Member

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    I'll let you guys know if I have a day without rain :(. Tempted to track down a 302 one just in case...
     
  14. Ryan

    Ryan Ford Addict

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    Do you have the engine and trans both out of the car? If you do then just put them togethor and try putting the starter in place.


    Stroker? You said you had to cut the plate? If you were using the transmission, plate, and starter that came out of your car in the first place then what was in the way when you put it back in? Was the plate blocking the flywheel or blocking the holes for the starter bolts?

    Maybe you do live in Bizarro world because this just dosnt make sense. And you are POSTIVE you didnt have a 200 engine?

    I wish somebody else would chime in here that has done the swap to settle my mind. I gotta know why its different. I guess I'll make a new thread since the title of this one isnt going to get us an answer.
     
  15. AppMaverick

    AppMaverick Member

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    Nope. engine and trans are in the car.. kinda a pain.
    Thanks for the thorough banter guys! I'm never gonna have to look this one up again :p
     

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