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700 rwhp 4.8 w/vid

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Old 03-20-2015, 06:14 PM
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Default 700 rwhp 4.8 w/vid
4 hrs on the dyno today, this motor is still hanging in there. best run was 707rwhp and had several @ 690ish. couldn't get the tires to hook very well on the rollers, had 4 straps and 400# of sand bags in the back. basically using it for tuning anyways. track in 2 wks is what i am interested in. running 18# boost, billet s475 and 16* of timing all on pump gas and meth.

dyno sheet is from one of the earlier runs overlaid w/ previous sheet w/ mp70 turbo. this s475 has lots of breath left in it.

video is from the 707hp run i believe, smoke is from the tires.




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Old 03-20-2015, 08:34 PM
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Nicely done! stock shortblock?
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Old 03-20-2015, 11:32 PM
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Nice 4.8 numbers. Gives me hope for mine
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Old 03-21-2015, 12:02 AM
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Awesome numbers!!
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Old 03-21-2015, 06:00 AM
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Nicely done! stock shortblock?
Stock bottom end, cam only. No gapped rings, stock head bolts.
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Old 03-21-2015, 06:52 AM
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Nice. Exactly what I figured my old 4.8 was at on that boost. 4.8s are a lot of fun.
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Old 03-21-2015, 07:42 AM
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Originally Posted by black4.8
Stock bottom end, cam only. No gapped rings, stock head bolts.
What cam are you running?
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Old 03-21-2015, 09:20 AM
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Originally Posted by black4.8
Stock bottom end, cam only. No gapped rings, stock head bolts.
similar to my old 4.8 from 6 yrs ago, just becareful if that motor is a weak rod motor

i shifted mine at 7600
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Old 03-21-2015, 11:51 AM
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What cam are you running?
221/221 .558 Lunati

similar to my old 4.8 from 6 yrs ago, just becareful if that motor is a weak rod motor

i shifted mine at 7600
it has the weaker rods. been abused for over 5 years and still going tho. i don't shift that high, usually 6800rpm
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Old 03-21-2015, 12:00 PM
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Crest 750 and rods start hating life

With new turbo shift it high if you want to go fast otherwise you're leaving ET and mph on the table
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