SS_Firehawk

Those are pictures of the HR and the VR block. More akin to comparing an LS2 to an LS7. What Im saying is it is indeed part of the VQ family and designed to meet the higher demands of forced induction. The J series was referred only as a cited argument to long cycles of use before a complete redesign of an engine. There are more similarities than differences between the pics. A closed deck is not significantly different than and open. VHR blocks can be purchased as closed decks.

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