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Dean Feiock · 09-12-2012, 10:35 PM

I won't debate the issue of their existance. I'm quite sure that in the US market, in GM production passenger cars and trucks, GM never installed a 4 bolt, 2 piece rear main seal, 305 block.

Among all the wording in the rule book, it states "no export, marine, or special equipment". That was the reason I was given when I asked years ago. Which in a nutshell means power plant, marine, and over the border parts don't qualify for stocker use (in most cases).

I have not seen one, but I am told the pallet of small bore Bowtie blocks that Patterson bought are two bolt to comply with the rules.

To be honest, at 400 HP, a good two bolt block with nodular caps and high quality sleeves is more than adequate.

09-12-2012, 10:35 PM	#5
Dean Feiock Member Join Date: Aug 2002 Location: Pierre, SD Posts: 204 Likes: 0 Liked 49 Times in 15 Posts	Re: 305 Stocker Block Question I won't debate the issue of their existance. I'm quite sure that in the US market, in GM production passenger cars and trucks, GM never installed a 4 bolt, 2 piece rear main seal, 305 block. Among all the wording in the rule book, it states "no export, marine, or special equipment". That was the reason I was given when I asked years ago. Which in a nutshell means power plant, marine, and over the border parts don't qualify for stocker use (in most cases). I have not seen one, but I am told the pallet of small bore Bowtie blocks that Patterson bought are two bolt to comply with the rules. To be honest, at 400 HP, a good two bolt block with nodular caps and high quality sleeves is more than adequate. __________________ Dean Feiock -- Stock 5002 Last edited by Dean Feiock; 09-12-2012 at 10:40 PM.