So after all that...how did the 5.3 non-turbo compare to the 455 in driveability? And then the 6.0? HP and torque may be similar but the rpm curve is higher. I've been thinking of going LS but reluctant to lose the bottom end torque. I REALLY miss the power of my 11-sec T-Type so was thinking LS turbo, but don't want to drive around a gutless turn when off boost.
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 70 GTO Restomod -- 400/200-4r, nothing to see here
70 Firebird -- 455/400
69 Mach 1 -- 390-C6
07 Escalade EXT
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