800hp twin setup 12v

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Diesel92

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Apr 22, 2013
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210 P pump off a 95 8.3 22dvs 5k gov springs rack plug and high pressure overflow high flow dv holders feeding 5x16s
Engine micro polished crank arp main and head studs Hamilton 188/220 billit cam heavy duty push rods 165# valve springs and hardened valve sets ported and o ringed head marine bowl pistons
was thinking s362/s475?? Should be plenty?
 
I would use a bigger primary s478 or s480. Cant just throw on parts and make 800hp takes alot of tuning.
 
Definitely gonna need more air and injectors for that fuel only imo.. 5x18 ish and 66/480
 
I know you can't just slap parts on make that kind of power. And I know there will be a lot of tuning involved. This is about what the fastest spooling most efficient twin setup that will support at least 800hp. But I know where your coming from
 
If your want "fastest most efficient" might want to think about g45 gt47 or gt50 with gt 40 under neath.

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Lots of guys like the 366/480 combo and that'll get you close to 900hp even in Denver (at elevation).

With the setup you want, you might be just shy of 800.
 
Droth is running 62/80 compounds at 10.8 fuel only. Full weight truck. I think an 80 wheel on that 75 and you will be fine.

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Alright so I'm thinking s480 as a primary or a gt45 I know an s480 is quite salty anyone know the best place for a gt45 and what they run price wise? Thanks
 
Why would you compare a GT45 to an standard S480, turbine sides are quite different in size.
 
The gt45 is 77/89 the s480 is 87/96 would this really make much difference I would think the gt45 would spool a little faster and still flow fine?
 
What is John P running? Saw him out at Rudy's -

which reminds me, saw that thing make 871 back in 2010, and boy was it quick on the dyno.
 
90dodge said:
Droth is running 62/80 compounds at 10.8 fuel only. Full weight truck. I think an 80 wheel on that 75 and you will be fine.

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I'm a little on the light side, 6000 lbs more or less.

The 62/80 was a good street combo. Got the feeling the 62/.70 was holding me back on the top end though. Starting out this year with a 63/71/13.
 
Diesel92 said:
The gt45 is 77/89 the s480 is 87/96 would this really make much difference I would think the gt45 would spool a little faster and still flow fine?
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The S480 turbine is between the GT47 and GT50 per size, the GT45 is 78/87mm and very similar to the older 87mm BW turbine wheel. The best money you can spend for your power goal would be toward a better pump.
 
Right now I have it set at 22° The pump was benched 60000 miles ago I'm not sure on what it flowed but I'd figure it was enough for at least a lean 800hp. I'll find out I guess. I have the engine finished and currently there's he351 over and ht3b on it for now I'm going tune the pump back for them so I can drive the truck when I finish it but I want to upgrade the twins here in the future hence the post
 
Quantity is not the only factor, rate has a much larger effect on the power that can be made. If your injection pump injects fuel for more crank degrees than the timing advance, you are injecting fuel ATDC which will make heat but not necessarily power.
 
Ok I miss read that comment as in rate your referring to the cam rate of the pump??
 
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