Stacking aluminum lowering block?

RustyRatRod said
I wouldn't use aluminum, period. But that's my personal preference.

For a short block I really don't see the issue. The force you're worried about is on the U-bolts.

Mojoe9955 said
I swapped out the worn out slant 6 springs with heavy duty Mopar 6 leaf springs, not quite Super Stock but they are stiff. And the back of the car was sky high. I also forgot to mention that I already flipped the stock hangers to lower it about an 1" already.

Which 6 leaf springs are you using? The absolute highest spring rate those should be is 130 lb/in, if they were for the 383 cars. The standard XHD's are only 110 lb/in. Neither should really be really stiff or raise the back of the car all that substantially.

Commando66 said
I use 2" blocks to cut down because they're on the shelf locally.

Fair enough!