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GM Performance

GM Performance GM12609999 GM19369841 -Gm 12609999 6.0L Ly6 Cast Iron Bare Block 4.00" Bore Gen Iv Based

GM Performance GM12609999 GM19369841 -Gm 12609999 6.0L Ly6 Cast Iron Bare Block 4.00" Bore Gen Iv Based

GM12609999
$3,870.00 AUD
$3,870.00 AUD
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Deep-Skirt Casting (the block side extends below the crankshaft centerline)
6-Bolt Cross-bolted Main Caps
Strong and Lightweight Aluminum Alloy Casting (most production blocks)
Provisions for the latest in Engine Control Management
9.240" Standard Deck Height
2.560" Standard LS Crankshaft Journal Diameter
1-Piece Rear Main Seal

View Specifications for more information



  • Main Journal Type: OEM
  • Engine Block Style: Stock/OEM standard deck
  • Deck Height (in): 9.240 in.
  • Cylinder Bore as Shipped: 4.000 in.
  • Engine Block Material: Cast Iron 
  • Main Caps Included: Yes
  • Main Cap Material: Nodular iron
  • Main Cap Fasteners Included: Main bolts only no side cap bolts
  • Main Bearings Included: No
  • Rear Main Seal Style: 1-piece
  • Finished Cylinder Bores: Yes
  • Cam Bearings Included: No
  • Freeze Plugs Included: No
  • Quantity: Sold individually.

Please email or call us before pressing buy it now, as we have low stock.
Please email sales@enginemaster.com.au with your suburb and postcode for a shipping quote.

Manufacturer Part Number:

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Why shop with Engine Master?

  • Quality Brands

    We only sell quality genuine products - with brand names you can trust, you know that you are getting the best products for your build complete with limited manufacturers warranty

  • Fast & Efficent

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  • Zero Regret - Hassle Free Returns

    We accept returns for up to 30 days, our returns are hassle free when following our return guidelines and policies and most items can even come back on our capped price Australia Post returns, making it a cost effective process to send your item back if it's not quite right.

  • Experienced Team

    Our team are all passionate about the Automotive Industry and involved with lots of avenues of Motorsports. We have mechanics, engine builders and die-hard enthusiasts here to answer your questions or give you expert advice for your ride - just give us a call!

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