305 wont bolt up to my th350 ?????

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  1. #1
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    305 wont bolt up to my th350 ?????

    305 wont bolt up to my th350 ?????

    any one know why ? it came out of a 87 caprice it was a 305 what will work
    1990 Hilux Surf 3.4 5vzfe
    sas 35s.
    1974 fj40 soon to be a 5vzfe also

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  3. #2
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    Re: 305 wont bolt up to my th350 ?????

    Where are you having the problem? holes not lining up? I know the alighnment pins can be a pain to get started if they are not cleaned out.

  4. #3
    Moderator fliptuner's Avatar
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    Re: 305 wont bolt up to my th350 ?????

    Is the torque converter all the way into the tranny?

    No fuel, tranny, or carb linkage getting in the way?

    Also, if the angle of the motor is off, you might be having problems getting the tranny on the same angle.

    Should fit. Don't give up yet.


  5. #4
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    Re: 305 wont bolt up to my th350 ?????

    Maybe it's a sign from the 350cuin gods telling you "Don't do it"
    1942 Ford GPW, being restored to original. 2nd owner since it was used to build the Alaska Hwy.

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  6. #5
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    Re: 305 wont bolt up to my th350 ?????

    is it a buick turbo 350?
    or chev turbo 350?
    no point in looking for another motor or trans till you find out what you need

  7. #6
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    Re: 305 wont bolt up to my th350 ?????

    both motor and trans are out of the vehicle so its not the angle the alingment pins go on no problem but only the two bolts below the pins line up nothing else, abd the space between the torque converter and ring gear is about and inch seems to be to much, I thought 305s were the same as 350? the trans is from a blazer so it should work
    1990 Hilux Surf 3.4 5vzfe
    sas 35s.
    1974 fj40 soon to be a 5vzfe also

  8. #7
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    Re: 305 wont bolt up to my th350 ?????

    post some pics of the trans and motor
    99 silverado RCLB,6inch lift,9k winch,35 bfg m/t,4.10's,5sp
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  9. #8
    Moderator fliptuner's Avatar
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    Re: 305 wont bolt up to my th350 ?????

    Quote Originally Posted by 99silverado View Post
    post some pics of the trans and motor
    or if you cant post pics, just post the location of the distributor

  10. #9
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    Re: 305 wont bolt up to my th350 ?????

    the location of the distributor? it seems to be where it should be at the back of the engine
    1990 Hilux Surf 3.4 5vzfe
    sas 35s.
    1974 fj40 soon to be a 5vzfe also

  11. #10
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    Re: 305 wont bolt up to my th350 ?????

    The 305 is out of one vehicle and the 350 TH is from the Blazer, no?
    Was the donor Blazer by any chance a V-6?
    Basically every Chevy small block V-8 bolts to any Chevy small block tranny.
    The same can't be said for V6 options, or "GM" applications (Buick-Olds-Pontiac).
    And these days there are other variations with FWD applications.

    It used to be so simple ....
    I'm just like my truck ... Always broke!

  12. #11
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    Re: 305 wont bolt up to my th350 ?????

    ya some one swapped in a olds or buick setup i guess, time to find a 350
    1990 Hilux Surf 3.4 5vzfe
    sas 35s.
    1974 fj40 soon to be a 5vzfe also

  13. #12
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    Re: 305 wont bolt up to my th350 ?????

    the space between the torque and the flex plate is not a problem. Just pull it close and bolt er up. The torque has to click 4 times when youre putting it into the tranny. One click short and the bellhousing won't line up. If its in right and all the way back there's a gap. It sounds like you have a "GM" variation like an olds. Are you looking for 2wd or 4wd output?
    the quickest way to ID the tranny is by the oil pan. Th350 is square but with an angle on the rear left corner.
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  14. #13
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    Re: 305 wont bolt up to my th350 ?????

    yes its th350, yes its an olds engine, I found a 350 and it works fine,
    1990 Hilux Surf 3.4 5vzfe
    sas 35s.
    1974 fj40 soon to be a 5vzfe also

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