LS Power!! Twin 76mm Turbo 4.8L 1200HP & still going!!
#34
That whole magazine rinks of BS, 75lbers wont even support that power level, need somewhere around 85-100lb injectors. If the 450 horse naturally aspirated is from the 4.8 and not some other engine, then the whole article goes down the drain, so yeah i dont think so.
#35
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That whole magazine rinks of BS, 75lbers wont even support that power level, need somewhere around 85-100lb injectors. If the 450 horse naturally aspirated is from the 4.8 and not some other engine, then the whole article goes down the drain, so yeah i dont think so.
Now the n/a argument, 450n/a on an engine dyno would probably be around 370ish thru a 60e auto. So that means could a 4.8 with 7/8 headers, fast intake, good heads, and no accessories at all be able to peak @7k rpm with that cam and make 370rwhp. Imo yes it could be done..
I think everybody is overlooking what i would call a pretty impressive top end with that intake and heads. Everything ive seen with a fast and boost has shown really good numbers and performs really well, this is no different..
Do this on a completely stock 4.8 with no upgrades and i think they barely break the 1k mark..?
Last edited by skolman91; 07-19-2011 at 06:13 PM.
#37
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As for the injectors, I don't know...
Edit: skolman beat me to it, lol
Last edited by Beatdown Z; 07-19-2011 at 06:15 PM. Reason: boats & hoes
#39
The fuel injectors come down to fuel pressure. Those 75lb's quickly become 100lb+. I run my 80's at 94 and would go higher if I had a stronger pump setup to support it. I would say they have more then enough pump suppling pressure/volume at the test stand.
As to the power, here's another one, stock crank and rods. It does have pistons though, ended up making 1342HP/928TQ at 7500rpms.
http://www.youtube.com/watch?v=1r4kC...ature=youtu.be
This is a 4.8L rod on the left, 5.3 mid, lq9 on end. Sure hell doesn't look like a 1300HP rod. I would want to be wrapped in armor if I pushed my truck to those levels for a 1/4 pass.
109615jpg_000000054522.jpg?t=1260125938
As to the power, here's another one, stock crank and rods. It does have pistons though, ended up making 1342HP/928TQ at 7500rpms.
http://www.youtube.com/watch?v=1r4kC...ature=youtu.be
This is a 4.8L rod on the left, 5.3 mid, lq9 on end. Sure hell doesn't look like a 1300HP rod. I would want to be wrapped in armor if I pushed my truck to those levels for a 1/4 pass.
109615jpg_000000054522.jpg?t=1260125938
#40
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Hmmm small displacement has proven good turbo hp, you also have to consider they are running 118 octane which should in turn lower duty cycle from needing less gas and having a cooler combustion, someone please correct me on this if im wrong....But im blown away myself on them achieving that on those injectors id myself like to know how much fuel pressure they were running