Welcome to Club Hot Rod!  The premier site for everything to do with Hot Rod, Customs, Low Riders, Rat Rods, and more. 

  •  » Members from all over the US and the world!
  •  » Help from all over the world for your questions
  •  » Build logs for you and all members
  •  » Blogs
  •  » Image Gallery
  •  » Many thousands of members and hundreds of thousands of posts! 

YES! I want to register an account for free right now!  p.s.: For registered members this ad will NOT show

 
Like Tree14Likes

Thread: advice on 489
          
   
   

Reply To Thread
Page 2 of 2 FirstFirst 1 2
Results 16 to 22 of 22
  1. #16
    cvfb97 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2018
    Location
    greenfield
    Posts
    10

    im in greenfield nh, according to google im about 840' above sea level. at work right now, but i will take a look at that link when i get out. one of the things im considering is building the motor for use with the blower, but running it without one until i can afford one.... will 8:1 scr be a complete dog without that blower?

  2. #17
    techinspector1's Avatar
    techinspector1 is offline CHR Member Visit my Photo Gallery
    Join Date
    May 2003
    Location
    Zephyrhills, Florida, USA
    Car Year, Make, Model: '32 Henway
    Posts
    12,423

    Quote Originally Posted by cvfb97 View Post
    im in greenfield nh, according to google im about 840' above sea level. at work right now, but i will take a look at that link when i get out. one of the things im considering is building the motor for use with the blower, but running it without one until i can afford one.... will 8:1 scr be a complete dog without that blower?
    Let's see what pistons are available to match up with the available chambers, then decide what to do. Naturally aspirated at ~8.00:1 wouldn't necessarily be a dog, but it wouldn't be a world beater either. Ideally, you would want to run less cam to match up with the 8.00:1 static compression ratio running naturally aspirated, then change back to more cam with the blower. The bigger cam might be OK though, with the 3000 stall converter that i suggested.
    .
    Last edited by techinspector1; 01-11-2018 at 11:23 PM.
    PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.

  3. #18
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

    Pump gas----------for whatever you may end up with-start looking around at the different stations to see what they have for octane ratings AND what ones have E85-------

    Crankshaft---------is the one you have cast or forged????????
    a properly balanced BBC forged crank will take whatever you can throw at it if your clearances and oil supply is adqute------

    If you lower your CR enough to be able to run higher boost at times-----------you will have a terrific time keeping your fuel mixture in your tank up to the Octane you'll need when you do decide to stand on it-----------Supercharged BIG INCH engines are unnecessary on the street and those engines are real pooches at lower speeds-( do you use VALET parking?)
    techinspector1 likes this.

  4. #19
    cvfb97 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2018
    Location
    greenfield
    Posts
    10

    the stock stroke one that came with my block is cast, was planning on getting a pre-balanced stroker kit (forged pistons/ rods, cast crank). when i get the supercharger i plan on removing the rotating assembly, adding a forged crank and having everything balanced together. If anything did somehow happen to the forged crank i would at least have a spare

  5. #20
    cvfb97 is offline CHR Member Visit my Photo Gallery
    Join Date
    Jan 2018
    Location
    greenfield
    Posts
    10

    would ~9:1 with an intercooler on 4psi running 91 be a happy medium?

  6. #21
    techinspector1's Avatar
    techinspector1 is offline CHR Member Visit my Photo Gallery
    Join Date
    May 2003
    Location
    Zephyrhills, Florida, USA
    Car Year, Make, Model: '32 Henway
    Posts
    12,423

    Quote Originally Posted by cvfb97 View Post
    would ~9:1 with an intercooler on 4psi running 91 be a happy medium?
    Yes, but I would just as soon run naturally aspirated with juice as I would to throttle down a good blower build. It would be far less expensive and the output would be close to the same in my opinion.
    .
    Last edited by techinspector1; 01-18-2018 at 12:07 PM.
    PLANET EARTH, INSANE ASYLUM FOR THE UNIVERSE.

  7. #22
    jerry clayton's Avatar
    jerry clayton is offline CHR Member Visit my Photo Gallery
    Join Date
    Feb 2006
    Location
    Bartlett
    Posts
    6,831

    You seem a little new to the engine build---How do you know the crank is cast? The cost added to "balanced assy " be negated if you take it apart to change ANYTHING with a crank change--put in the best one first time with rods and pistons that will work with the blower------4psi won't do much for you except at wide open and you will just get blown away by someone else running 6 psi------
    Last edited by jerry clayton; 01-18-2018 at 12:52 PM.

Reply To Thread
Page 2 of 2 FirstFirst 1 2

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
Links monetized by VigLink