hey guys, im looking to get started here real soon on my twin turbo on my chevy cummins. right now i just have a VE pump, but as soon as im done with the twins, im going to do a p pump swap. i know the p pumps move a bunch more fuel than the rotarys do so dont really know what size injectors and turbos to go with thatll suit a p pump well. my goal is to be around 500hp+. would some 5x.014 injectors be a good setup for that power level? or are some 6x.016's needed. and would an hx35/ht3b setup work with that?

im pretty much just wanting to know, with a p pump and twins, which turbos and which injectors will get me where i want to be?

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any ideas?

tltruckparts's Sig:

1995 Chevy K2500, 1993 Cummins P Pumped 12 valve Turbo Diesel IC, Getrag 5 speed w/ southbend clutch, NP205 Transfercase, SAS w/ GM Dana 60 front, AAM 11.5 rear, BFG MT 35's. SDX 5x14 injectors, PhatShaft 62, airdog II 165, Autometer EGT, Boost, & Fuel Pressure, hydraulic steering. and a few moore goodies

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That turbo set up will work just fine. My friend Nck just did 601hp with that same turbo set up on his 01.

rkadcock's Sig:

97 2500 Cummins

Fuel:Fuel Plate MIA, 5x16s, 5K GSK, 22* Timing, Maxed Out 12mm 180 Pump w/ Taper Cut 181 DVs, Airdog 150
Air:Custom CAI w/ S&B Filter, 64/S480 Compounds, 5" MBRP STR8
Goodies:Automer C2s, Suncoast Tranny, 7" Mitre Stack, Studs, 60# Valve Springs

06 F350 King Ranch Powerstroke

Fuel:SCT X3 tuned by EDE, FASS 150/180
Air:AFE Stg2 XP, 5" MBRP STR8
Goodies:Autometer Cobalts

New Mexico Bombers

do you know what size injectors he ran by chance?

He was running a set of 200s. He now has 240s in his truck and that turbo set up is still working out for him.

5x14's would be a very good sized injector to go with, with those injectors and turbos, and a properly tuned p-pump, that setup will take you well past your goal if you wanted it to.

R&RDiesel's Sig:

07.5 6.7 quad cab sb. egr and dpf missing, black maxx and shimmed relief valve. Daily Driver.
My Pride anf joy!
95 3.0 pro stock puller, rockwell, drop box.....

cool thats exactly what i wanted to know. i have the SDX injectors now for my VE and i love them, so id like to stick with sdx injectors if possible. and they do make 5x.014s so thatll be good.

anyone know approximately what kind of mileage im looking at with that much power? will it be about as equivalent with my setup now, or will i increase my mileage because of the efficiency of the twins and not wastin fuel through smoke?

and also, should i look for an hx35, or an hy35?

roll with a hx40, if your pushing that much fuel for 500hp and that you need twins the stock exhaust housing will increase drive pressure to much and you will blow your hg, and have high egts. go with a hx40, with either a 14cm, or 16cm housing. and then go tighter on the 3b housing

dan33klein's Sig:

96 Ram 2500 Cummins 12V twin turbo diesel reg cab long box. NEW TORQSHIFT 5R110 TRANSMISSION, 5 inch turbo back exhaust, Holset Super 40 over a Garrett HT3B turbo, SDX 5x.014's, #10 fuel plate,ARP head studs, boost elbow, 4k kit, 60lb valve springs, water/methanol injection,custom air intake,boost,pyro,and oil temp guages.
upcoming mods, o rings, NOS

SDX has the 5x014's - that's what's goin in my truck, along with the hx35 / ht3b twin setup - my friend has that same setup and put 600+ to the wheels on a blown head gasket..

9412Valve's Sig:

'94 12 Valve Cummins * Built Automatic * Smokem 5x.014 Injectors * Silver 64 71 14 * Custom HF Intake * #0 Plate * 3kgsk * AirDog 150 * KDP tabbed * 181 DV's * Mag Hytec Double Deep Pan * Trans Temp, EGT, Boost Gauges * Silencer Ring MIA ***

i think i decided to do the hx40/ht3b. im thinkin the 16cm hx40 and the 21 or 26 cm ht3b (havent decided which housing size yet). that way im not having to sell my turbo and buy another one.

what are the advantages and disadvantages to running a 40 instead of a 35?