GM Performance GM24502503 Cast Iron Bowtie Race Block Sbc 350 4 Bolt 9.025" Deck

1 1

GM Performance

GM24502503
$6,700.70 AUD
$6,700.70 AUD
Sale Sold out
Tax included. Shipping calculated at checkout.
View full details

GM Performance GM24502503 Cast Iron Bowtie Race Block Sbc 350 4 Bolt 9.025" Deck

Item Description

These Chevrolet Performance 350 c.i.d. cast iron racing Bowtie bare engine blocks are CNC-machined from raw castings. All traditional racing modifications are provided by the factory. The heart of these blocks starts with a 3.980-4.155 in. Siamese bore cylinder case. In addition, all galleries required for dry sump oil system operation are drilled and tapped for pipe. 8620 steel bearing caps are installed on all locations of the blocks. The intermediate main bearing caps have the outer 7/16 in. diameter studs on the inner locations, and 3/8 in. diameter straight bolts on the outer locations. The rear bearing cap is a 2-stud (7/16 in. diameter) configuration and utilizes a 2-piece rear seal design. After the installation of the steel bearing caps, the blocks are align bored.

Additional features include:

* Priority main oiling
* Enlarged lifter bosses
* Bearing cap inner bolts spread .210 in. to allow use of 2.65 in. diameter journal cranks on properly modified blocks
* Early model 2-piece rear main seals
* Sonic bore check (data provided)
* Use 1985 and earlier oil pans
* Enlarged cam bosses in front and rear allow use of larger bearings
* Use premium quality studs and 8620 200 steel splayed main bearing caps



  • Main Journal Type:Chevy 350
  • Engine Block Material:Cast iron
  • Engine Block Style:OEM
  • Engine Block Deck Height:Standard deck
  • Deck Height (in.):9.025 in.
  • Cylinder Bore as Shipped:3.980 in.
  • Cylinder Bore Diameter:4.000 in.
  • Maximum Bore Diameter (in.):4.155 in.
  • Main Bolt Style:4-bolt
  • Main Caps Included:Yes
  • Main Cap Material:Steel
  • Main Cap Fasteners Included:Yes
  • Main Bearings Included:No
  • Rear Main Seal Style:2-piece
  • Finished Cylinder Bores:Yes
  • Raised Cam Location:No
  • Cam Bearings Included:No
  • Freeze Plugs Included:Yes
  • Quantity:Sold individually.
  • Notes:Shipped 3.98 unfinished bore. Max bore 4.155 in.

Manufacturer Information

  • Manufacturer: GM Performance
  • Manufacturer Part Number:
  • UPC:
  • Colour:
  • Additional Information:
  • Please Note: Images are for representation only and may differ than the actual product - please contact us if you require an exact photo

After more details? Contact Us

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

    We use a number of great couriers to get your parcel to you ASAP! In a rush? Give us a call and ask about an 'expedited order' or enquire on current ETAs!

  • 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!

1 4

Found a better deal elsewhere?

We try to keep our pricing competitive for all our customers - if you have found a better deal elsewhere, send us an email here and we will do our best to match offers.
(Ensure you include the part number and a link to the competitors price!)