Best setup to make 750-800Hp with a 6.4

300000 and counting

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Like it says I'm looking to make at least 750 HP but not over 800HP (My tranny is only good for 800hp), I tow a fair amount and DD about 800 miles a week so I'd like to have a setup that complements Towing and Daily Driving. I'm currently running a precision 71mm turbo from Rudy's, could I get to 750hp by adding a 59mm and 15% or possibly even 30% injectors to my current setup (plus dual fuelers and a lpfp)? Or do I need to bump up to a 59/76 setup with 15% or 30% injectors?

My current truck mods are as followed:
- 71mm Precision LP Turbo
- Warren Diesel Comp Plus Tranny
- No Limit Intake
- ARP head studs
- Elite's Wastegate kit (not installed yet)
- Better Push rods (I don't know anything about the though)
- Mini Maxx tuned by Gear Head

I know that I want to run a Midwest Dual Fueler kit and a Marty's fuel system, but I don't what combination/ brand of injectors and turbo's I need to get me to my goal. Any help will be appreciated

DC90E201-1B84-4144-B6E8-0393DEB0DB26_zpsxmbcth46.jpg
 

Shafer171

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Sounds like your on track to meet your goals, I am building the same setup right now with a 750 hp goal in mind
 

bigrpowr

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You can easily get there , but you'll need a waste gate , a hp turbo , and 30% or bigger nozzles. You'll need up pipes at minimum , but the bd set is a ton of bang for the buck. Let me know if I can help !
 

StrokiNDieseL

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WHS^, LPFS, ****** fuel bowl, all pipes upgraded also. I've done everything mentioned but wheel replacements instead of new chargers & yielded 704RWHP. But wish I would have done new chargers but thats soon.. All I need is a trans & its currently in getting one! I added 30's & had my injectors flow tested but I know I need dual fuelers asap! GL
 

Jonnydime

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Dual fuelers 60% nozzles and a drop in 76mm turbo. Better yet pick the pair of High Power Jr's in the classifieds. Up pipes would be easy since you already have the turbos out.
 

sootie

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like everyone said, get your dual fuelers from Morgan as well as have him put 60% nozzles on your injectors. you will need a 59mm hp turbo for sure. if you bump your atmo to a 75 or bigger, you will be knocking on 800
 

Somd_6.4

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Elite 60hp nozzles stock/72 atmo and Morgan's dual pumps put me at 730-740 according to hp calculator
 

300000 and counting

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You guys don't think 60% would be to big? If Somd 6.4 is making 730hp on 15% surely 30% would be big enough to get me to 750hp
 

sootie

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30s will likely get to 750 but why not have room to grow. price is basically no different.
 

sootie

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Neither point you mention is a valid concern. Both will be addressed by tuning.
 

Rubenk

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You'll be very happy with a 76/59 turbo setup with 60% nozzles and dual fueler. I made ~713whp(track confirmed) with factory injectors, dragonfire, and RCD 75/59 turbos.

Tuning will be the crucial part in keeping it low smoke and responsive.
 

Black AOD

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Like it says I'm looking to make at least 750 HP but not over 800HP (My tranny is only good for 800hp), I tow a fair amount and DD about 800 miles a week so I'd like to have a setup that complements Towing and Daily Driving. I'm currently running a precision 71mm turbo from Rudy's, could I get to 750hp by adding a 59mm and 15% or possibly even 30% injectors to my current setup (plus dual fuelers and a lpfp)? Or do I need to bump up to a 59/76 setup with 15% or 30% injectors?

My current truck mods are as followed:
- 71mm Precision LP Turbo
- Warren Diesel Comp Plus Tranny
- No Limit Intake
- ARP head studs
- Elite's Wastegate kit (not installed yet)
- Better Push rods (I don't know anything about the though)
- Mini Maxx tuned by Gear Head

I know that I want to run a Midwest Dual Fueler kit and a Marty's fuel system, but I don't what combination/ brand of injectors and turbo's I need to get me to my goal. Any help will be appreciated


OP, I see your in Ohio. DM me, we can talk or even meet if you're close to me....
 

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