Important Notice:  Because of a very limited supply of new 109 blocks, they may only be purchased with one of our short block or long block builds.

We have available, in short supply, brand new GM 3.8L 109 SG1 blocks. 109 blocks have been increasingly harder to get so the few blocks we have will likely not last long. These blocks have been precision machined to better than original production vehicle standards. They have been bored but finish honing is required to bring it to 3.800" (standard bore), which we can do with torque plates if that option is chosen.  This 109 block comes with stock main caps and bolts with main bores finished from GM and steel freeze plugs installed. The block will need cam bearings, oil galley plugs, the turbo drainback hole drilled and tapped, and dowel pins. Each 109 block has been individually wrapped and boxed.

Part Number: WRE BKGN109N

Description: New Buick 3.8L SG1 109 Engine Block