FWIW...I swapped from a 4.56 to a 4.10 in my avatar. 408 stroker engine with 28" tall slicks. 5000 stall converter off a footbrake. Both rears hook up equally well. Have run lower ets with the 4.10 as the 4.56 wanted to spin the engine to 6700-6800 at the stripe. Power peak more like 5800 hence the 4.10. It now traps in the 6100-6200 range (
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