Longer Shocks
I really like the QA1 shocks. they come in fixed, single adjustable and double adjustable. The range of adjustments goes from soft to very firm. I run mine on the second from the softest setting front and rear. Very good quality shocks.
[URL]https://qa1.net/vehicles/mopar/car/barracuda/1967-1969/shocks/[/URL]
My '70 'Cuda has a stick and a stroker motor. Controlling the body separation on the hit was an issue, I ended up getting a pair of AFCO double adjustable with their Big Dog valving. It's the only shock I've found that controls the separation on launch.
When I measured the eye to eye length with the shocks removed and the rear end sagging while the body was up on jack stands, I found I needed about an additional 2 inches in length over stock. I'm running a pair of 3200lbs driver's side springs with inset hangers. I control the spring wrap with a set of properly adjusted slapper bars. This set-up is the best I've found in the last 40+ years of experimenting.
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The stance on that '70 Cuda looks killer!
I did look at the QA1 shocks and I've heard they're a high quality product but they don't appear to offer different lengths... QA1 shocks are all 23.6" extended, I was looking for something around 25" based on 2-2.5" longer than stock. Its only about 1.5" of difference and may have been absolutely fine but I was worried they would be in danger of topping out on extension during a hard launch with the 02/03 Superstock springs.