Engine Power - 1973 RS Camaro build shake down

Discussion in 'The BS Topic' started by COPO, Jan 15, 2020.

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  1. Chevyforever

    Chevyforever Veteran Member

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    So I froze the view of the piston top and ran the part # of the MAHLE pistons, 4.185" bore
     
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  2. jlsug

    jlsug Veteran Member

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    world prducts did make ls hybrid Product Description
    World Products 084080 - Cast Iron Motown/LS Engine Block Chevy Small Block 350 Mains, 3.995 Bore, Nodular Caps

    World Products SBC/LSC Cast Iron Engine Block Chevy Small Block Raised Cam +.134" 350 Mains, 9.240"Deck, 3.995" Bore, Nodular Caps, 55mm Cam, .904" Lifters.(includes, Freeze plugs, Cam plug, All dowel pins and Pipe plugs) 084080

    For more detailed information click on the link below.

    https://www.billmitchellproducts.com/cast-iron-sbc-w-ls-heads/
     
  3. dcozzi

    dcozzi Veteran Member

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    It was likely a 400 Dart block.
    I have never seen a Dart 350 block. Do they exist?
     
  4. badazz81z28

    badazz81z28 Veteran Member

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    Can you even call it that? It’s a hybrid...you can get a 4.000 or 4.125 bore and it can accommodate so thing like a 4.100 stroke. Uses LS bearings etc...I don’t think they consider it a 350 or 400 block.
     
  5. dcozzi

    dcozzi Veteran Member

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    Don't know. It's not really a 5.3, 6.0 or 6.2 either. Unless you have quality genI stuff laying around, I do not know why you would build this particular motor. I think most would build one or the other. The modern top end seems to be the biggest, maybe only, reason.
    It says 350 mains in the description. I thought that indicated genI crank/bearings.
     
  6. badazz81z28

    badazz81z28 Veteran Member

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    I don’t see a compelling reason to have this hybrid either unless you purposely want a big cube SBC but want LS heads. But you can always get killer heads for a SBC too...

    I rather buy a aftermarket LS block.
     
  7. muscl car

    muscl car Veteran Member Lifetime Gold Member

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    Dart has both SHP and Little M blocks with 350 mains

    My Shafiroff 427sbc has a Dart block with 4.125 bore with 4.0000 stroke using 6" rods
     
    Last edited: Jan 17, 2020
  8. John Wright

    John Wright Veteran Member Lifetime Gold Member

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    If you already have SBC running gear all sorted out you may not want to swap all of that stuff back out to run an LS. That's where I am presently, I have the transmission, bellhousing, driveshaft and turbo exhaust all of that stuff worked out and really do not care to reinvent everything again to get an LS in there.
     
  9. dcozzi

    dcozzi Veteran Member

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    I would feel the same if I ever go turbo.
     

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