I've got some questions about the upgrade path for my truck. Intro thread here with some more info and background.

 

Truck Info:

2001 Quad Cab

Automatic/HY35

~260K Miles

4.10s

285/75R16 - 33's

BHAF, 4" Turboback, Billet Singe Torque Converter, Shift Kit, Fass

Random small things like greaseable ball joints, etc

 

I'm happy with the truck when just driving around, but I feel like it could use some more power when towing my fifth wheel up some of the passes in WA/ID/OR/MT. It'll definitely do it, but i've had some steeper grades where keeps 40/45 is difficult and I'd like to make that easy while keeping my EGTs in check. The first thing I will be doing is a 3 gauge pod with a pyrometer, fuel pressure, and boost gauge. Plan for now is IssPro EV2s. One thing I have seen is fuel pressure gauges seem to bounce around a lot. If I already have a low pressure warning light and a quadzilla on the way, would it make more sense to have a trans temp gauge?

 

After reading many threads, it seems like the HY35 is a bottle neck in the system if you do more than very minor upgrades. I've seen Mopar's HX35 build and Me78569's HE351CW install guide. In similar threads it sounds like the HX35 is better for mileage, top end power, and EGTs when compared to my HY35. The HE351CW sounds like a step up from the HY35, making more power, slightly lower EGTs, and maintaining fast spooling. I'm not really concerned about mileage since I don't drive the truck that much and I'd much rather have a better experience when towing my fifth wheel or my dad's trailers.

 

Along with one of these turbos I plan to do injectors. Most likely something like 7x0.010s which seem to be recommended here often. They sound like they fit the bill for both of these turbos and some room for changes in the future. To control them I plan to add a quadzilla and tune it accordingly. I spent a couple years helping out with my school's FSAE hybrid car and got a little bit into the Motec tuning. That plus an IC engines class and I feel confident on the adjustments that quadzilla gives.

 

Mainly just looking for general insight into these plans or suggestions for better alternatives. I'd like to think I read enough to not miss something major, but it's definitely possible.

Edited October 12, 20204 yr by CatalystGilles
Adding info

I'm mainly curious what changes to the 47RE you think are necessary for 300hp ,350hp, and 400hp? I'm guessing there are a more than a few people that would be interested to hear.

Did you already buy your quadzilla? I just bought a 2006 yesterday and I’m giving my 01 to my gf. Taking the quad off though before hand. So I’ll be posting it up for sale if you’re interested in a used one.  

2 hours ago, CatalystGilles said:

I'm mainly curious what changes to the 47RE you think are necessary for 300hp ,350hp, and 400hp? I'm guessing there are a more than a few people that would be interested to hear.

Assuming the rest of the transmission is in good shape (which is anyone's guess, honestly), a valve body, torque converter and deep aluminum pan are great upgrades (along with supporting items such as: billet accumulator piston, billet intermediate servo cover, reinforced band strut, etc.).

 

The million dollar question is what is the condition of the rest of the transmission? I had a 48RE across my bench just the other day that was just here for a valve body, servo cover and accumulator piston. He had the transmission out of the truck for some engine work and just dropped the whole thing off for me to do the work. It had been fairly recently "rebuilt" by some other shop, but after pulling the valve body, I noticed the junk band that they had used, as well as some weird stuff that they had tried to do with the valve body. So I got curious for my customer's sake. I pulled the pump and input assembly out to look at the clutches. The direct clutch was absolutely hammered. I still worked, but wouldn't have for long. I literally just finished buttoning up the complete build on that transmission. I ended up finding a bunch of other stuff that was wrong with it once I got it all torn down. The moral of the story is that you literally don't know the condition of the internals of the transmission without looking at it.

2 hours ago, ColoradoColt said:

Did you already buy your quadzilla? I just bought a 2006 yesterday and I’m giving my 01 to my gf. Taking the quad off though before hand. So I’ll be posting it up for sale if you’re interested in a used one.  

 

Colt, I haven't yet and I'm definitely interested.

Well that's not real reassuring regarding paying someone else to work on one's motor conveyance.

Dynamic, thanks for the insight. Sounds like what the others have said with regards to parts. I will likely be giving you a call later this year or early next to setup something. I've already got the pan on the way so it's easier to drain and I have a place to put the temperature probe.

 

With regards to previous work, I have had good experiences with the shop that rebuilt it previously. My dad, brothers, and I have all had vehicles in there for work ranging from basic servicing to full blown rebuilds.

Progress has been made. Got the boost and pyrometer gauges setup before my Halloween camping trip. Towed the fifth wheel out to the coast and the truck did great as usual. Boost seems to max out at about 19psi which matches with the stock setup. The pyrometer maxed out at 1250* on a sustained pull and just wouldn't go over that.

 

On the weekend I was able to get my transmission flushed and put my Goerend pan on. It was pretty easy and the only thing that I had to run to the store to grab was a 5/16-18 tap clean out the thread for the longer fasteners that come with the pan. I did find that I had a reusable pan gasket on there that I will clean up and save for the next time. Now I've just got to get the trans temp gauge wires ran and it will be all good to go.

 

I did find a set of RV275s for $200 that I couldn't pass up, so now I'm on the lookout for an HX35 that doesn't look like it's been sitting on the beach since 2002. That should be a good combination for now and if I really need more after that I will look into bigger injectors and a different turbo + a valve body from Dynamic.

This thing popped up locally to me. Said they bought it for a project car, but they ended up going for a big block and don't need a turbo anymore. Do these HX35W with the wastegate bracket built into the compressor work in the 24 valves without issue? I've been trying to search for answer on it, but I haven't been able to find anything?

That looks like the turbo that I have on my truck.  I also looked up the Holset PN from the tag in your picture and it matches what came on the 1999 Autos.  I'll go out and verify that my waste gate bracket is the same as in the picture in a few, after I finish my coffee...

 

Thats what came on my 02 manual. It was stock equipment on the 01 and 02 manual, the autos of those years had the HY but the HX will work on the autos. If you have plans for alot more HP something else would be better. How much do they want for it?

Edited November 19, 20204 yr by dripley

 

Yep, same as mine.  So it should work without issue.  Like dripley mentioned though, get it if it's cheap and will match your power plans otherwise I'd look at something newer.  Right now I have 150hp injectors a boost elbow and a quad adrenaline and it works well enough.

I could probably get it for $300. It's the only one I've seen that wouldn't need surgery to make functional. Plus those are all priced about the same.

 

Right now I'm thinking the RV275s and an HX35 will be fine for a while. The fact that it just drops in and doesn't require a new down pipe is nice. The other option is wait a little longer and get that HE351CW that BlueOx got. It will require rotating it, building a wastegate bracket, and a new DP but would be more long term solution.

Looks new. $300 would be a good deal even if you don’t use it. You could likely double your money. 

I would buy it for 300. Mine has 517k miles on it. But I have looked at the HE351 that @Blueox01is using. Maybe one day he will tell us how its working out for him.

Double check the bearings quick if need a rebuild kit is super cheap. HX35W is a stock turbo typically a (54/60/12). 

BlueOx got back to me in a private message about his HE351CW.

 

"Works great, I had to clock the compressor housing to match the HX35 and modify the waste gate actuator bracket a bit."

 

As for the HX35, it does look to be brand new. I will likely cave and buy it. Even if I end up wanting more in 6 months to a year I could probably sell it for as much as I get it for.

12 hours ago, CatalystGilles said:

 

 

As for the HX35, it does look to be brand new. I will likely cave and buy it. Even if I end up wanting more in 6 months to a year I could probably sell it for as much as I get it for.

If you don't buy it, let me know...