Welcome to the Pinned Deck Conversion Page.   This Deck Modification strengthens the block and stabilizes the cylinder bores.  This is needed when increased HP is added to the block, creating extra stress' that can lift heads and blow head gaskets.  Our Pinned Decks are one of many ways to strengthen a block, and it works well with other supporting mods like larger head studs, O rings, and even some Sleeves.    When CNC Solid Deck Conversions are out of the budget, this alternative is great for engine builders, shops, and DIY enthusiasts that want to have a stronger block.    This mod can be done on a Knee Mill, which is a traditional machine most engine shops will have.    Contact us for End Mill/Pin Kits, as they are available in 1/2" and 3/8". 

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3/8 Pin .500" Tall

1/2 Pin .500" Tall