Results 1 to 6 of 6

Thread: Ally or iron block

  1. #1
    Junior Member SHOW GUEST
    Join Date
    Jan 2010
    Location
    Southampton UK
    Posts
    8

    Ally or iron block

    I am having my challenger engine rebuilt and it should be making around the 1000 hp would it be better to also change to an ally block.
    The engine will be supercharged
    stroker kit - 528 ci
    Indy race heads

    any help appretiated

  2. #2
    Senior Member SENIOR BUILDER
    Join Date
    Dec 2007
    Location
    Morrison, Colorado
    Posts
    120
    All depends on how much you are willing to spend, how much time on the street if street use is planned, etc. Aluminum blocks are expensive, so It's a big choice to make. Also going to take special attention to bearing clearances, warm up proceedures and such. No reason you can't run one, but they aren't necessary unless weight is your primary concern and expense is not. Not needed at 1000 hp, and you'll likely have better engine longevity with an iron block. Max effort engine where cost is not a concern, every pound counts, and you'll be checking the engine on a regular basis, aluminum. Don't confuse the aluminum block factory engines in cars like the Corvette either, those engines are designed to run for thousands of miles under normal street driving conditions. A 1000+ hp motor is a different animal altogether.
    Mark Goulette
    Owner/Driver of the Livin' the Dream dragster
    www.livinthedreamracing.com
    Speed kills, but it's better than going slow!!!!

  3. #3
    Senior Member MASTER BUILDER
    Join Date
    Apr 2003
    Location
    Brookings South Dakota
    Posts
    244

    Re: Ally or iron block

    Quote Originally Posted by vanillacc1
    I am having my challenger engine rebuilt and it should be making around the 1000 hp would it be better to also change to an ally block.
    The engine will be supercharged
    stroker kit - 528 ci
    Indy race heads

    any help appretiated
    We did a 900+ 440 a few years back with a stock block. We are currently doing a 528 Hemi using the world products block.

    If there is money in the budget, buy the aftermarket block, Iron or aluminum is up to your wallet thickness, both will support 1000+

    Good luck with your build
    Competition Engines & Hardcore Engine Parts
    www.cnc-motorsports.com
    info@cnc-motorsports.com

  4. #4
    Senior Member EXPERT BUILDER
    Join Date
    Jun 2005
    Location
    potash country
    Posts
    262
    I have a question,where money is not a concern. I have a street/strip 1969 Camaro with all the goodies and want to install a 706ci. engine. The 706 iron blocks are heavy,so aluminum it will be.
    Now does anyone know which manufacture has the lightest alum. block? (Rodeck, Keith Black, Dart,Brodix ect,ect,ect) Or is there much of a difference?
    If a 5 lb hammer can't fix it,it must be electrical
    Keep the shiney side up! 8)
    http://www.racingjunk.com/profile/85221

  5. #5
    Senior Member RACING JUNKIE
    Join Date
    Dec 2008
    Location
    Sugar Hill, GA
    Posts
    1,365
    Quote Originally Posted by nofear69
    I have a question,where money is not a concern. I have a street/strip 1969 Camaro with all the goodies and want to install a 706ci. engine. The 706 iron blocks are heavy,so aluminum it will be.
    Now does anyone know which manufacture has the lightest alum. block? (Rodeck, Keith Black, Dart,Brodix ect,ect,ect) Or is there much of a difference?
    I would go with a Goodwin Competition Allstar Series
    BBC bellhousing and exhaust pattern
    They start at 708 CID and go to 940 CID+
    8.00 rods, 2.50 intake valves, 2.00 exhaust valves, 1.735 springs.
    Fuel injected model is 714 total pounds with water pump/distributor/harmonic balancer/alternator and dry sump.
    Dave
    http://www.racingjunk.com/profile/343797
    "All that is necessary for the triump of evil is for good men to do nothing" Edmund Burke

  6. #6
    Senior Member EXPERT BUILDER
    Join Date
    Jun 2005
    Location
    potash country
    Posts
    262
    I talked to CNC and Jacobs Perf. about the 706ci for my street car and man it sure sounded intriguing but I finally came to my senses........what would I do with all that torque on the street? Anyway I was really going to go for it and then a pump gas 540 came up forsale at a price I could give up,so I bought it.
    Ya 540 on the street I think will be plenty enough....don't you think...
    If a 5 lb hammer can't fix it,it must be electrical
    Keep the shiney side up! 8)
    http://www.racingjunk.com/profile/85221


Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •  
Email us - Support@RacingJunk.com
Call us - 866.326.9227
Copyright © 2005-2016 RacingJunk.com All Rights Reserved.

Designated trademarks and brands are the property of their respective owners. Use of this Web site constitutes acceptance of the RacingJunk.com
Terms of Use, Classifieds Disclaimer, Privacy Policy, and Cookie Policy