A little disappointed...LS1+228R+PRC Stg 2.5 5.3s+FAST92 = 421/391

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05-05-2013, 10:03 AM

#41

KrisR

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Latest dyno sheet from yesterday. I got a fresh tune from a different guy and driveability is much improved. His in-car wideband when he was tuning it was a consistent 12.6-12.8.

I have seen claims of 470rwhp out of this combination but I don't see how unless there's a lot of trickery involved.

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05-05-2013, 10:14 AM

#42

MikeWS6

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Ive had mine on two different dynos with the PRC 5.3 heads / 228R cam combo. The first dyno was 414/383 and the second dyno was 414/387.

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05-05-2013, 10:26 AM

#43

KrisR

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Quote:

Originally Posted by MikeWS6

Ive had mine on two different dynos with the PRC 5.3 heads / 228R cam combo. The first dyno was 414/383 and the second dyno was 414/387.

Thanks. LS6 intake or ?

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05-05-2013, 02:52 PM

#44

MikeWS6

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Quote:

Originally Posted by KrisR

Thanks. LS6 intake or ?

Yes ls6 w/ ported tb.

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05-05-2013, 03:15 PM

#45

red fury

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I have not seen any budget headed 347s hit 470 rwhp. I have seen some TF, AFR and maybe a cnc'd Dart head combo get over 470rwhp though. M6 cars is what I am referring to