Making boost with the 455

Discussion in 'High Tech for Old Iron' started by Michael Evans, Apr 10, 2010.

  1. sailbrd

    sailbrd Well-Known Member

    Looks like you getting closer Mike. Does it seem like someone is always moving the goal line?
     
  2. Michael Evans

    Michael Evans a new project

    Jumping some hurdles right now.

    Have a few parts on order :rolleyes:


    If everything falls in place, I should be able to try and start it this weekend.
     
  3. offbrand Racing

    offbrand Racing Platinum Level Contributor

    Michael

    I like it!!!! Keep up the good work.

    Regards,
     
  4. Michael Evans

    Michael Evans a new project

    Almost there.

    All was going good until I did a clearence check then all bets were off. The hat was 3/4 inch to tall.

    I put a lower profile hat on and it now clears the hood. But had to take the unit on and off a few more times (lost count really).

    Had to reclock the back housing while doing some clearancing. When grinding on a $3000.00 unit, you don't want to take off more than you have to.

    Will take pictures tomorrow.
     
  5. sailbrd

    sailbrd Well-Known Member

    I was complaining to my tranny builder about hood clearance. His solution... just lower the motor. Works good with stripped down race cars. There are days I just want to throw a chevy style hood on and forget it. I am going to run two AFR guages soon and see if I have any difference between sides with the carb hat I have.

    What kind of clearance problems are you having with the blower? I did do a very slight "massage" on my fender liner. Looking forward to pictures.
     
  6. Michael Evans

    Michael Evans a new project

    Doug,

    That sounds like a good idea, but my $300.00 oil pan is even with the crossmember now.

    Have it all together now. I am anxious and nervus at the same time. All I need to do is put in the coolant.

    The bad part is I can't get it out of the garage for about three days :( because we just had the front bricked up.
     
  7. Michael Evans

    Michael Evans a new project

    could not take it any more had to start it.

    I open the main garage door by hand (disconnected the automatic opener).

    It started with authordy and ran well. After it warmed up I cut it off and went over all the nuts and bolts.

    Bad thing is when I will be able to get it out of the garage, it will be raining.



    [​IMG]
     
  8. sailbrd

    sailbrd Well-Known Member

    There is no room for me to drop the motor either. All the junk on the front :laugh:
     
  9. Michael Evans

    Michael Evans a new project

    The problem I was having was a bulge on the compressior housing (bolt boss)that was keeping me from clocking to get the outlet to the proper angle that I needed to meet up with the carburetor hat (tall Posten's valve covers).

    One of the pictures I have on Photobucket shows me holding a 7/16 inch wrench between the unit and the inner fender. That clearance is great.

    The biggest problem I had is that the low profile hat that came in the kit was to tall by about 3/4 of an inch.
     
  10. Michael Evans

    Michael Evans a new project

    Short drive staying in the neighborhood did not even get to look at the guage the two times I got into boost.

    The back tires did not stand a chance :grin: .
     
  11. Michael Evans

    Michael Evans a new project

  12. Lon Bauer

    Lon Bauer Well-Known Member

    Michael,
    Sounds nice! :TU: I want one......
    Lon
     
  13. jay3000

    jay3000 RIP 1-16-21

    How did I miss this thread?? Very NICE..
     
  14. sailbrd

    sailbrd Well-Known Member

    Mike
    Do you have power steering in there?

    Must be the belt slipping that I am hearing.:laugh: No way are we going to sneak up on anyone. Looking really good.

    My motor is going to Finishline Monday.... for a spun #7 :spank: I am getting to good at this engine pulling.
     
  15. Michael Evans

    Michael Evans a new project

    At the rod run when I pulled in, someone asked if I had a BBC with a gear drive.

    I just said no, They do not make a gear drive for a BBB (not that I would want one).

    Gear drive or BBC.

    It is a head turner.

    Sorry to hear about your #7
     
    Last edited: May 15, 2010
  16. sailbrd

    sailbrd Well-Known Member

    I'm just going to play dumb (that won't be hard :laugh: ) and pretend I don't understand what they are talking about.

    If I open the hood will just say its the new air conditioner.
     
  17. Michael Evans

    Michael Evans a new project

    Doug,

    How much hot oil pressure do you run at idle?

    What type front cover do you have on your engine?



    I am running 32 pounds hot oil pressure with a TA cover (adjustable regular).

    At first, I was concered that I did not put in enough oil in the unit. And I was told that I need to have the belt "guitar string" tight.
     
  18. sailbrd

    sailbrd Well-Known Member

    Mike,
    I just had a stock cover and it ran 20# at 185 degrees, 800 rpm. That is consided good pressure. 34# is excellent.

    Bobb and I had a talk about how tight to run belts. Do not think we settled on any agreement. I am hoping that the tensioner will apply the correct pressure. You setup is easier on the crank than mine. I think you should run the least pressure that can do the job. Will see how it works out when Bobb gets my motor done.
     
  19. Michael Evans

    Michael Evans a new project

    Anyone know where I can get boost ratings for a given diameter pulley?

    My five inch pulley is not getting the boost I want.
     
  20. buick46270

    buick46270 Well-Known Member

    For every tenth of an inch smaller you go, youll pick up roughly 1 lb. of boost
     

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