12v HE351 Install - Dodge Cummins Diesel Forum
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post #1 of 31 (permalink) Old 04-27-2019, 07:29 PM Thread Starter
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12v HE351 Install

Gathering the rest of the parts for the 351 and all the old threads are closed. Im going to use one of Steed's controllers and would like to be able to keep the shock tower without flipping the manifold. There are several T3/T4 adapters but I will probably get a new T4 manifold if there will be room between the shock tower and VGT controller. Anybody got this setup? Looking at a Steed Speed straight T4 manifold or maybe one of the motor home manifolds with adapter.


1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap

Last edited by 98whitelightnin; 04-27-2019 at 07:54 PM.
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post #2 of 31 (permalink) Old 04-28-2019, 04:49 PM
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Quote:
Originally Posted by 98whitelightnin View Post
Gathering the rest of the parts for the 351 and all the old threads are closed. Im going to use one of Steed's controllers and would like to be able to keep the shock tower without flipping the manifold. There are several T3/T4 adapters but I will probably get a new T4 manifold if there will be room between the shock tower and VGT controller. Anybody got this setup? Looking at a Steed Speed straight T4 manifold or maybe one of the motor home manifolds with adapter.
HE351s are T4i (also called WGMT flange) which is different from T4, check out the first post for drawings of each here: T4 vs T4i. You will need the eBay adapter and with that the turbo actuator box will hit the shock tower if you keep the turbo within the correct angle for oil to drain. I modified my shock tower and chopped it down an inch which barely clears. Another option is to get shock saver plates (if you have a lift/leveling kit already), which are just flat plates instead of the raised tower.

Eventually I'll be flipping the manifold anyway to make room for big boy shocks and fabricated towers.
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1996 2500 ECLB, NV4500, 4X4
Engine: 24 Valve P-Pump Swapped, Crowler Springs, Adj. Timing Gear @ 20*, Haisley L19 studs, DAP 3 Piece Mani, Fluidampr, Southbend DD3250, 5" Exhaust+FTE Resonator
Air: HE351VE w/ Banshee Controller
Fuel: 215HP P7100, Infinite Performance 6x11 VCO, Scheid Conversion Lines, PDD 055s, AirDog II 165, Dual Feed, #0 plate, 4K GSK
Suspension: Thuren 3" Coils, Thuren Sway Bar, DOR Track Bar, DOR Shackle Flip, DOR Extreme Bent Long Arms, Synergy Steering, Fox 2.0 IFPs, Yukon Hub Conversion, Dynatrac BJs, 37x12.5x17 Toyo M/T's on H2s
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post #3 of 31 (permalink) Old 04-28-2019, 05:27 PM Thread Starter
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I have Thuren 2Ē springs and Carli sig series shocks but I think they will be too long for the flat plates. What about one of those motorhome manifolds that put the turbo back further, like common rails? Iíll have to use an adapter either way. Or maybe the straight Steed Speed manifold with adapter? Donít really want to buy a Steed Speed but I will if I have too.

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #4 of 31 (permalink) Old 04-28-2019, 06:29 PM
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Why not just use a 6.7 manifold? I'm sure you could pick one up cheap seeing how there is lots of people converting cr's to 2nd gen manifolds.

Probably not the best design for heat in the back cylinders but I do like how clean they look with the turbo tucked away.

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99 Ram 3500 SLT 4x4, 19.5's, P24v, ZF6-750, s362/475, 7x0.014, supporting mods.
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post #5 of 31 (permalink) Old 04-28-2019, 09:35 PM Thread Starter
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They donít leak mating round holes to square?

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #6 of 31 (permalink) Old 04-28-2019, 09:48 PM
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Keep forgetting im in the 94~98 section.. Yeah could be a issue maybe someone can confirm.

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99 Ram 3500 SLT 4x4, 19.5's, P24v, ZF6-750, s362/475, 7x0.014, supporting mods.
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post #7 of 31 (permalink) Old 04-30-2019, 12:49 PM
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someone has run the 6.7 manifold on a 12v with their HE351ve turbo. i don't recall if it's RX7Man or Me78965 (or something like that).

no reports of leaks that i've read about...but you won't be able to use the 6.7 manifold if you have your auto heat exchanger there.

Lil' Blackbox Ľ ? is another controller option if you're still looking for options too.

BJ
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95 ECLB 4x4, DSS, HD X-over steering, auto., Hell bent 2.5" lvl, Thuren track bar, tabbed KDP, 4" MBRP, Autometer EGT/Boost/Fuel Pressure, Otherwise all stock.
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post #8 of 31 (permalink) Old 04-30-2019, 02:24 PM Thread Starter
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Truck is a manual and I already have one of Steedís boxes. Black box looks like a good deal though

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #9 of 31 (permalink) Old 05-03-2019, 07:48 PM
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Seems like flipping the manifold you already have would be a better route in my opinion. Then you don't have to mess around with finding a motorhome manifold or shelling out for a steed manifold and can keep the shocks and towers as well. Why don't you want to flip it?

I'd advise against a 6.7 manifold. Even if it will seal up with the round vs. square ports I you'll have some weird flow and turbulence issues that would probably decrease performance in some way.

1996 2500 ECLB, NV4500, 4X4
Engine: 24 Valve P-Pump Swapped, Crowler Springs, Adj. Timing Gear @ 20*, Haisley L19 studs, DAP 3 Piece Mani, Fluidampr, Southbend DD3250, 5" Exhaust+FTE Resonator
Air: HE351VE w/ Banshee Controller
Fuel: 215HP P7100, Infinite Performance 6x11 VCO, Scheid Conversion Lines, PDD 055s, AirDog II 165, Dual Feed, #0 plate, 4K GSK
Suspension: Thuren 3" Coils, Thuren Sway Bar, DOR Track Bar, DOR Shackle Flip, DOR Extreme Bent Long Arms, Synergy Steering, Fox 2.0 IFPs, Yukon Hub Conversion, Dynatrac BJs, 37x12.5x17 Toyo M/T's on H2s
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post #10 of 31 (permalink) Old 05-03-2019, 08:35 PM Thread Starter
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I may try that but really hate to put this old manifold back on when I take it off. No problems with exhaust or exhaust housing hitting the fire wall with it flipped over?

1998 12v, 4x4, Club Cab, Carli, Thuren, BlueTop, Core 4x4, BD Diesel, PDD 5x.012, South Bend
2012 Laramie Longhorn, EFI by Ryan, Carli, Thuren
1995 Dually, Weston's 5x.016, 4k GSK, 5" FloPro, 255/85r16 Toyo M/T, Goerend, ARP, 60# Springs, BW 62/65/14, BW 75/96/1.10, Isspro, Fass 125, BDP Sump, 7mm DV's, 751 HP 1883 FP Torque on NOS
1998 P-Pumped 24v, 4x4, NV4500 swap
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post #11 of 31 (permalink) Old 05-03-2019, 11:15 PM
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Originally Posted by 98whitelightnin View Post
I may try that but really hate to put this old manifold back on when I take it off. No problems with exhaust or exhaust housing hitting the fire wall with it flipped over?
I was running a he351ve in a compound setup for a while. This was with a 2nd gen 24v flipped. I had to notch out the vent intake area right below the weather strip for the hood. There was enough hood clearance though.

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99 Ram 3500 SLT 4x4, 19.5's, P24v, ZF6-750, s362/475, 7x0.014, supporting mods.
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post #12 of 31 (permalink) Old 05-29-2019, 07:41 AM
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I still have my stock 12v manifold flipped in my compound setup. I did port and clean up the casting quite a bit though. Mine hadn't shrunk too much. But I will say do not attempt to reuse it unless you resurface the flange area. The ends tend to pull up and you will either have leaks or you will put unnecessary stress on the exhaust ports on the head. I have a big piece of granite that I have some 80 grit on and flatten everything I weld on or put back together in order to ensure it's flat with no leaks. I was amazed how far off my manifold was when I started truing it up.

98 QCLB 12v he351cw over billet S475 5x.018's, 7mm DV's 4kgsk, Walbro 450lph, 5" Exhaust, DPC Converter, Billet Input, Firepunk Competition Rebuild Kit
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