455 stage 1 fuel pump

Discussion in 'Street/strip 400/430/455' started by Canadian GS 350, Jan 22, 2020.

  1. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Are regular 455 fuel pumps the same as a stage 1 fuel pump? I can access Airtex, AC Delco....

    If anyone has the Stage 1 pump part number would be much appreciated.

    Thanks
     
  2. flynbuick

    flynbuick Guest

    No they are not the same. The stage one unit has a much larger bowl.
     
  3. BuickV8Mike

    BuickV8Mike SD Buick Fan

    No. Stage 1 pump are bigger on the bottom and do require a different steel line to the carb.
     
  4. flynbuick

    flynbuick Guest

  5. flynbuick

    flynbuick Guest

  6. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

  7. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Larry, ordered the ac delco pump. We’ll see if it’s the big bowl unit. It’s at my local Lordco in North Vancouver.
    Thanks
     
  8. 70 GMuscle

    70 GMuscle Plan B

    If you run a double roller timing chain.
    You should elongate the bolt holes to space it away from the chain.
    I ruined one not knowing this.
     
  9. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Thanks PlanB
     
  10. Canadian GS 350

    Canadian GS 350 Well-Known Member

    B75BD860-2262-44F6-A905-3B08BCBB6894.jpeg Well they still have them. Thanks for the part number
     
  11. ranger

    ranger Well-Known Member

    The original A/C Delco had a wear pad on the end of the arm--secured by 2 rivits--to where the arm contacts the cam.

    Does yours have that? They may have eliminated it to save $.

    Best,

    Ranger
    Aiken, SC
     
  12. hugger

    hugger Well-Known Member

    This isn't intended to go on the engine your planning in cam recommendation thread is it?
     
  13. Brett Slater

    Brett Slater Super Moderator Staff Member

    Unless a TA front cover is utilized, then this provision is one of its features.
     
  14. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Hugger - I was planning on an electric pusher with 3/8 fuel lines - that’s one option. Or may even go another route and run a fuel surge cell

    I know the stock mechanical pump be it stage 1 or not will not support the future build. Ran into this issue on my 395 rear wheel hp w30.
     
  15. Canadian GS 350

    Canadian GS 350 Well-Known Member

    Also - look at the restriction in the bend on the fuel inlet on this pump. I think I’m going to return it.
    Anyone know if Airtex does a better job on this 90 degree 3/8 inlet?
     
  16. hugger

    hugger Well-Known Member

    They all are crimped like that,..with the engine build your contemplating I'd do 1/2in feed,.with a 3/8 return with a 160gph pump if you go carb,..3/8 will be fine with FI,..but you'll need a baffled and or submerged pump or you will fight fuel slosh that's always been my experience anyway
     
  17. LARRY70GS

    LARRY70GS a.k.a. "THE WIZARD" Staff Member

    Last edited: Feb 5, 2020
  18. jamyers

    jamyers 2 gallons of fun

    My wife (and I) are SO glad my fuel pump quit while the engine was warming up yesterday morning, instead of halfway to church!!! Also, it was nice to see this fairly recent thread on them.

    In addition to the AC Delco part number 40664, I found the following numbers for cross-referencing.
    Spectra Premium SP1263MP
    Airtex 40664
    GM 440804, 6440664, 6470098

    Of course you'll want to get a solid confirmation that it's the Stage 1 pump, as some vendors' computers show the stock pump under those numbers (looking at you, Advance and NAPA)

    I'll also add that NAPA, O'Reilly, Advance, and Pep Boys all show the Stage 1 pump as "Not Available", while AutoZone (which is the worst parts place of all here locally) can get it (the Spectra brand) within 2-3 days for $40
    , compared to 1-3 weeks and $50-90 from Summit, Ebay, or any other place I found it.
     
    ranger likes this.
  19. Bogus919

    Bogus919 Silver Level contributor

    I just wanted to add here that the Autozone one is also not the real stage 1 fuel pump. They have the picture of the stage 1 on the website with the deep bowl and in the “notes” it says high volume stage 1… but they send you a stock one. The part number for the spectra stage 1 is SP1263MP but the part number listed on the autozone website is B1263MP and that’s what they send you….a stock one.
     
  20. chiefsb30

    chiefsb30 Gold Level Contributor

    Mark Demko and ranger like this.

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