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Thread: block ?

  1. #1
    F'in Catalina Yacht Mixer 94svtcobra's Avatar
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    block ?

    how does the new boss block compare to a dart sportsman block. anyone know the hp amount the boss can handle.

    also what would I need to do to make the boss block 347 stroker compatible because of the short cylinders??

  2. #2
    RRT juice_man_86's Avatar
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    I've heard that the Boss block is good to about 1500hp, but I've already read about some people taking it past 2000hp. I personally have a Boss block and am VERY impressed with how it looks. Looks super strong. Ask Tim from Rodeheaver's his opinion, he has dealt with Dart blocks before and has my block in his shop now.(I'm his little brother, lol)
    2014 Mustang GT m6 - 12.97@111
    All stock down to the tires
    12.53 on slicks. Stock. No tune.

    1986 Mustang 5 speed - 12.10@110 off the sauce
    11.05 on Nitrous babying a hurt t-5

    327 stroker BOSS block with junk Pro Comp heads
    355hp n/a
    520hp on nitrous

    All Nitrous parts are gone. Turbo on the way

    Tuned by Tim @ Rodeheavers Hotrod & Dyno Shop

  3. #3
    Senior Member Killercanary's Avatar
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    I have a dart sportsman block, the reason I chose it was because I wanted to use hydraulic lifters and didn't want to spend the >$400 on the linked retro lifters that would have been needed in the dart iron eagle block. The sportsman block is already setup to accept the stock spyder bar and lifters and it can handle over 1000hp without a problem. My machining cost were minimal as the block needed next to nothing. I got a dart and would do so again without a question. If you search on hardcore50.com you will find plenty of reading on both the boss and dart, and their true end cost and abilities.
    -Paul

    1995 GT 'vert
    Best times on old 302 combo:
    12.03 at 112.5mph NA
    Best time with 9:1 compression NA dart block 331 setup:
    11.50 at 121mph
    Dyno'd: 415rwhp/410rwtq


    2004 Z16 commemorative edition Z06
    100% stock: 11.9 at 118mph




  4. #4
    RRT juice_man_86's Avatar
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    The BOSS block also accepts the stockspyder bar assembly and lifters. It is also already clearanced for strokers. It is not, however, designed to be used with a stroke greater than 3.4 inches
    2014 Mustang GT m6 - 12.97@111
    All stock down to the tires
    12.53 on slicks. Stock. No tune.

    1986 Mustang 5 speed - 12.10@110 off the sauce
    11.05 on Nitrous babying a hurt t-5

    327 stroker BOSS block with junk Pro Comp heads
    355hp n/a
    520hp on nitrous

    All Nitrous parts are gone. Turbo on the way

    Tuned by Tim @ Rodeheavers Hotrod & Dyno Shop

  5. #5
    F'in Catalina Yacht Mixer 94svtcobra's Avatar
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    what would the 3.4 equal to?

  6. #6
    Senior Member Rodeheaver's's Avatar
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    Quote Originally Posted by 94svtcobra View Post
    what would the 3.4 equal to?
    with a 5.4 rod length and a piston with a 1.090, and standard 4.00 bore, it will be a 342ci
    2015 A6 Mustang GT that so far has gone 9.48@147 but still the fastest prochargerd S550 in the world aside from Tim Essick's!
    www.Rodeheavershotrod.com

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