Supercharger on 455

Discussion in 'Street/strip 400/430/455' started by BP_Motorworks, Jun 18, 2003.

  1. skyphix

    skyphix Well-Known Member

    Twin turbo 455s... centrifugal supercharged 455s... did I die? Am I in heaven?
     
  2. Marco

    Marco Well-Known Member

    Dude! :TU:

    :beer :beer :beer

    :bglasses:
     
  3. Nitro71455

    Nitro71455 Procharged 455 boost baby

    :grin: :grin: :grin: :grin: :grin: :grin: :grin: :grin:

    That's all I can do right now :grin:

    Thanks for all the great words guys :TU:

    The charger is going to work out great. Just as I thought, there's going to be some tuning. For starters, I have to get a bigger pulley. The one I have is wanting to push 8 1/2 to 9 psi and that was in 90 degree temps :eek2: . I'll be sending it back for one that will give me 5 1/2 to 6 in the heat.

    I still need to built the cold air intake, but other than that, all the stuff is installed including the alky kit which works very well. Once I have her a bit more tuned in with the larger pulley, I'll post some before and after times :TU: Right now, it feels like an easy 1.0 to 1.5 seconds faster in the quarter :beer
     
    Last edited: Jun 29, 2003
  4. alan

    alan High-tech Dinosaur

    Boost, don't leave home without it! :bglasses:

    I'm interested in seeing what the times are, also. A little boost goes a long way on a big block!
     
  5. Nitro71455

    Nitro71455 Procharged 455 boost baby

    Man I'd say :TU: Talk about wakeing the BEAST withen :eek2:. The charger turned my car into a completely different animal, yet it still drives the same on the street (as long as you don't go past 1/4 throtle :beer
     
  6. Nitro71455

    Nitro71455 Procharged 455 boost baby

    Re: bottom end mods?

    I'm not sure where the fellow pulled the 11 to 1 from. My motor is at 9.8 -1. As for the bottom end, There's is no girdle, or halo. Just stock rods with ARP bolts. (shotpined and cyrod). This is one reason why I need the boost down to 6psi.

    I was going to put rods and a TA girdle on the motor, then the new block popped up. I figure I'll run a lower level of boost for a few years (as long as it stays togeter) then I'll purchase the new block and build an 8.5 -1 motor that I can shove about 11 to 15 PSI in with no worries. I just couldn't see dumping 2 or 3k into my block to allow another 2 or 3 psi with almost 10-1 motor.....

    So basically, I'm just running a well built 455 with ballaced botom forged pistions stock rods with arp's and etc. The motor has about 10 or 15k on it.
     
  7. Nitro71455

    Nitro71455 Procharged 455 boost baby

    No Problem Rob!

    I think the 11 to 1 came from the above snip. I'm not exactly sure If Craig was thinking my motor had 11 to 1 or if he was just stating to be on the cautious side. At any rate, with 10 to 1, you can succesfully run low levels of boost 5 with no cooler, and 7 or 8 with alky injection on pump gas. ATI claims up to 14 to 1 with an intercooler on a 10 to 1 motor. Any way, it will be fun to see aht the car does now. and how much better it acts once it's tuned.

    I'll post the pics of the intake as promissed latter today once I get off work, as well as the blower installed (for good :) ) with teh alky setup and such.
     
  8. mltdwn12

    mltdwn12 Founders Club Member

    Yeah, I thought you had 11 to 1 and THEN were adding a blower:pp
     
  9. Nitro71455

    Nitro71455 Procharged 455 boost baby

    Here's the before and after pic's of the intake............
     

    Attached Files:

  10. Nitro71455

    Nitro71455 Procharged 455 boost baby

    And...............
     

    Attached Files:

  11. Nitro71455

    Nitro71455 Procharged 455 boost baby

    And here are the final install pics without the PS bracket, and the cold air intake..........
     

    Attached Files:

  12. Nitro71455

    Nitro71455 Procharged 455 boost baby

    and...........
     

    Attached Files:

  13. Nitro71455

    Nitro71455 Procharged 455 boost baby

    and the alky container and pump location................
     

    Attached Files:

  14. Nitro71455

    Nitro71455 Procharged 455 boost baby

    And the master control for the alky setup............
     

    Attached Files:

  15. Nitro71455

    Nitro71455 Procharged 455 boost baby

    A close up of the controler.................
     

    Attached Files:

  16. Jim Weise

    Jim Weise EFI/DIS 482

    So does it scream... or what?


    Nice install Rich.. looks good.

    JW
     
  17. Nitro71455

    Nitro71455 Procharged 455 boost baby

    Hopefully this weekend the Cold air intake will be completed. I'm having a bugger of a time finding some 4" sylicone boots to make it with.

    The Larger pulley is also on the way. It should be here by then as well. If everything goes well with both of them then the fine tuning can begin. After that point, I'll be able to post some times.

    I should ge hitting the track around the 18th or so :grin:
     
  18. Nitro71455

    Nitro71455 Procharged 455 boost baby

    Well...... Jim, to your standards, it's prabably a slouch :pp .

    To me it screams :grin: At 5000ft, the car turned a best time of 12.90 at 111 MPH with good cold air (about 50 degrees). Most of the time, it was in the 13.2 range at 107 to 108.

    I'm pretty sure with the charger at 5 to 6 psi, I'll pickup at least a full 1.0 to 1.5. To me that's fast especally at 5000ft in a car that weights 4150 with me in it. And it will be run on PUMP GAS.

    I'll keep you all posted once it's tuned enough to run.
     
  19. bobc455

    bobc455 Well-Known Member

    If I were looking at that system from a fluid mechanics perspective, I might be concerned that there is a preferential airflow toward the #8 cylinder, and away from the #1 cylinder. Do you think that you are gonna see #8 running lean and #1 running rich?

    -Bob Cunningham
     
  20. alan

    alan High-tech Dinosaur

Share This Page