The LSX block comes in a tall deck and a regular deck. Under what conditions would you use a tall deck and when would you want to use a regular deck.

 

I'm definitely not the expert so if I say this wrong I hope the smart ppl will jump in and clarify but I believe people choose "tall" vs "reg" decks based on their rod / stroke length. For example if you want a stroke length longer than stock you might need to get a block that has a taller deck on it then mill off some of the decking to fit your desired goals.

http://victorylibrary.com/mopar/rod-tech-c.htm is a good read. It addresses your question from the perspective of rod length. I"m sure there is more info if you google the topic as well.

 

Thanks for the response. Let me ask this question another way. If you were going to build an all out race motor and had decided on the LSX block as the foundation of the build and was aiming at an et of low 9's, which would you use, the tall deck or the regular deck.

 

Standard deck for 4" or shorter stroke crank
Tall deck for 4.125" or longer stroke crank