New Engine ....... going even bigger cubic inch sbc

Discussion in 'High Performance Modifications' started by muscl car, Nov 27, 2019.

  1. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    Going to a 427 sbc that should make easily 600 plus hp / 590 tq

    Dart Little M 4 bolt block

    Scat 4.000 stroke 4340 forged crank

    Scat 6.000 4340 forged H beam rods

    Forged pistons ( should be 11.4 comp with my 64cc AFR Cyl Heads)

    Howard's hyd roller 600 lift , 251/259 dur @ .050 112 LSA


    Will reuse the top end of the old engine ....


    AFR cyl heads

    Edelbrock super Victor

    Wilson tapered 4 hole spacer
     
    Last edited: Nov 27, 2019
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  2. Zspoiler

    Zspoiler Veteran Member

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    That sounds fun .It will have quite a cackle to to it.
     
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  3. badazz81z28

    badazz81z28 Veteran Member

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    Hydraulic roller is a nice touch
     
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  4. camaro71/holland

    camaro71/holland Veteran Member

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    Nice! Congrats :bowtie:
     
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  5. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    Guess I missed something, thought you already had a 427 sb from several months back. That should make the tire bill go up.
     
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  6. G72Zed

    G72Zed Veteran Member

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    I thought you just built/finished your 600hp/ 406ci? I guess your looking for more TQ, (lol, aren't we all most Times). Or, your not happy with the dyno results and 1/4 mile performance & ET.

    I would look into the final compression with your new 434 build, given the regular HG cc with flat tops and a 64cc your 406 was around 11.55CR, if everything is staying the same, your up to 12.25CR, unless your on race gas, then no worries.

    Are you good with using an oil ring support rail with the short 1.000CH pistons. I like to stay away from those if possible, just difficult with that short of a CH piston.
     
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  7. dcozzi

    dcozzi Veteran Member

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    You will be nice and lopey with that cam. I have a .568 hyd. roller in my 406 and it is pretty rowdy already.
     
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  8. CorkyE

    CorkyE Veteran Member Lifetime Gold Member

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    With 112* LSA, are you looking at EFI in the future? Certainly the best thing I've done to my engine.
     
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  9. frankz

    frankz Veteran Member

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    If I were to build a small block from scratch I would go 18 degree for Sure.
     
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  10. G72Zed

    G72Zed Veteran Member

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    A 434 SBC with a 4 inch stroke and a 251 dur @ .050 cam with a wide 112 LSA, I say it will be on the tamer side of idle characteristics, and the wrong cam, but if going FI, it may be great.

    The "best" overall "mild" cam I have used is 252 @ .050 on a 112 lsa, w/10.5cr, but is 100 cubic inches smaller?
     
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