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Bill Bogues · 09-26-2016, 09:42 PM

The 305 Canadian block I have in Sharons car has a thicker main webbing than the other two bolt blocks that I have seen. Also the block is about .20 to .30 thicker in the cylinder areas that other blocks. All the GM guys I used to work with that poured them said they were made thicker due to the colder conditions up north. This also applied to the 350 blocks too. Most of them that I checked always had one or so cylinders out of whack that had some core shift, but they were all thicker than a reg block.

09-26-2016, 09:42 PM	#15
Bill Bogues Member Join Date: Apr 2005 Location: Bethany La. Posts: 318 Likes: 83 Liked 169 Times in 52 Posts	Re: 305 Canadian block ? The 305 Canadian block I have in Sharons car has a thicker main webbing than the other two bolt blocks that I have seen. Also the block is about .20 to .30 thicker in the cylinder areas that other blocks. All the GM guys I used to work with that poured them said they were made thicker due to the colder conditions up north. This also applied to the 350 blocks too. Most of them that I checked always had one or so cylinders out of whack that had some core shift, but they were all thicker than a reg block. __________________ Bill Bogues 4696 STK