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428 Pontiac

Discussion in '1936-Present Suburban' started by nevercomplete, Jan 25, 2003.

  1. nevercomplete

    nevercomplete 1/2 ton status

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    Here's the deal. I've been offered a 428 pontiac engine. I have always wanted to make my truck different, not the same thing everyone else has. I'm want to put this engine in my suburban. I know I need an adaptor plate to bolt the engine to my tranny, but what else do I need? Are the engine mounts the same? What am I missing? Thanks for your help.
     
  2. DesertDueler

    DesertDueler 1/2 ton status

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    Mounts are different. Brackets are different. It will take some work to get it in there. You could give it to me though /forums/images/graemlins/wink.gif

    Dan /forums/images/graemlins/burb.gif
     
  3. Diesel Dan

    Diesel Dan 1/2 ton status

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    You don't need an adapter for the trans. Just use the BOP trans and have a 4wd output shaft installed. I know a guy who took the 455 out of his T/A and had it in is 4x4.
     
  4. HarryH3

    HarryH3 1 ton status Author

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    The adapter only costs $65. That seems a whole lot cheaper and easier than tracking down a BOP tranny and then having to strip both trannies down to the bare case to swap the output shaft. /forums/images/graemlins/shocked.gif
     
  5. muddysub

    muddysub 1 ton suburban status Staff Member Moderator GMOTM Winner

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    dude go for it it's alll about being different to me. /forums/images/graemlins/thumb.gif /forums/images/graemlins/pimp1.gif /forums/images/graemlins/burb.gif
     
  6. HarryH3

    HarryH3 1 ton status Author

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    Here's the adapter that you need: http://store.summitracing.com/partdetail.asp?part=27457 The price has also dropped! It's only $54.95 now. /forums/images/graemlins/thumb.gif

    It looks pretty simple too. /forums/images/graemlins/cool.gif

    [​IMG]

    Just figure out how to fab up the engine mounts, then get a 454 radiator and you should be good to go. /forums/images/graemlins/cool.gif Oh yeah, do some measuring first. I don't know how wide the 428 is, but some of the BOP motors are really wide (Olds 455 comes to mind). It might require some massaging of the firewall and/or the A/C box, if the truck has A/C.
     
  7. nevercomplete

    nevercomplete 1/2 ton status

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    Well, the guy running it now has it in his '79 Blazer. He is giving me the tranny adaptor so I'm covered there. Thanks for the help.

    Jon
     
  8. HarryH3

    HarryH3 1 ton status Author

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    Why didn't ya say that in the first place? /forums/images/graemlins/wink.gif There isn't any difference between installing it in a Blazer and installing it in a Sub. Just get his engine mounts too and you're all set. /forums/images/graemlins/thumb.gif
     
  9. nevercomplete

    nevercomplete 1/2 ton status

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    Well, he didn't put it in there so he doesn't know what all was done to make it fit, and he will have taken the engine out and have replaced it before I get a chance to pick it up, so I won't have the convience of doing the swap from one truck to the other. I just want to be prepared and not have any surprises.

    Jon
     
  10. DesertDueler

    DesertDueler 1/2 ton status

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    If you dont want any surprises, then like I mentioned before, get all the brackets. If it doesnt have the pontiac brackets, then you need to buy them from someone like classic industries. Also the pulleys are differnt. So your best bet is to get a complete motor with accs. Or is you want to spend the $ March pullies has a serpintine setup for $1100 if you have A/C, 900 without.

    Dan /forums/images/graemlins/burb.gif
     
  11. HarryH3

    HarryH3 1 ton status Author

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    Just make sure that he saves the tranny adapter and whatever mounts are holding the engine in place. Then the install should go pretty smooth! /forums/images/graemlins/thumb.gif
     
  12. nevercomplete

    nevercomplete 1/2 ton status

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    It comes with all the brackets.
     
  13. holyjohnson

    holyjohnson Registered Member

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    sounds like a good idea.
    different is good!
    more cubic inchs!
    goodluck
     
  14. nevercomplete

    nevercomplete 1/2 ton status

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    I just talked to the guy I'm getting the engine from and he says the engine bolts right up to his th350, no adaptor. Whats the deal, I thought a pontiac engine wouldn't bolt up to a chevy tanny.
     
  15. 84K5BD

    84K5BD 1/2 ton status

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    your right they will not bolt up without an adapter, how are you making out with the swap? is it finished?
     
  16. nevercomplete

    nevercomplete 1/2 ton status

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    I haven't even started. I'm still stuck overseas.
     

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