Hmmm i put 4.11's in xf i did with 5litre and btr in it, i actually got a better time on the gtech with the 3.23's i had in it earlier than the 4.11's. Although there was something funny with the combo i was running, it rev'd, it made dyno figures, but it just didn't pull hard in first.
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T058 TS50 - 302 AFR165, Victor 5.0, Custom Cam, tuned by me, 245.6rwkw 329rwhp at 6800rpm.
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