Mopar Gen IV hybrid install... underway

[Final GTS]

If anyone is interested, this same topic is being discussed on ViperClub.org:

Gen III to Gen IV Engine Build
Mopar "650HP" pkg installed
800HP V10 crate engine, 650HP bolt-on kit for Gen III's, announced today

 

[caveman]

If anyone is interested, this same topic is being discussed on ViperClub.org:

Thanks for the link. I hope the viper community beats Mopar up so badly that they offer to make it right for WA 2 FST.

 

[ARRESTmeRed04]

If you got home at 345 ish then we passed each other on 35 when I was on my way home, surprised I didn't notice you on the way.

 

[WA 2 FST]

If you got home at 345 ish then we passed each other on 35 when I was on my way home, surprised I didn't notice you on the way.

Got home at 2:10 or so...made good time.

 

[WA 2 FST]

I bet it would run those times at ATCO or Englishtown (or a ski slope near you), but in all seriousness, after having it a couple of days and driving it more aggressively, it runs very good. Shifting right at 6k rpms, the revs don't drop much with the 6-speed, and it pulls extremely hard on the 20-100mph pulls I've done. Definitely doesn't run out of breath on the top end.

I don't know much about the 710 cam, but what I want is something that will be very streetable and street legal, AND I don't have to go spend more $$ on new valvesprings/retainers/keepers and potentially machine work for the spring seats. So it is indeed going to take some significant R&D, b/c I have no idea what the Gen IV springs can handle. I've tried to find Gen IV Viper cam specs, but given it is VVT (or some form of it, I believe), I'm not sure that would be much of an indicator to go by.

You're right... I basically have a Gen IV engine (minus .1 L and a little compression, and no variable timing cam), so given those variables... my HP/TQ is probably about right. It's just not what was advertised.

My two cents.....

Your grapgh is amazeing!

Before I belieave your truck was 12.9 at 111 mph capable. But after the mopar kit Id say its 11.9 at 120 mph capable.

71 rwhp and 4 tq on a dyno dosent tell the real story here. Look at how your power is carried out harder and longer throughout the upper rpms.

This isnt just a 70 rwhp gain. This is essentially gonna feel like a completely new engine.

Considering this is still on the stock cam Im very happy with your results. There is no head and headers package you could have purchased that would have given you a 70 rwhp gain on the stock cam.

But its deeper than that. Looking at your pics you appear to now have a gen4 engine. That in its self is just kool.

Id have to recommend the 710 cam from roe racing. Do not and I repeat do not let anyone tell you it will hurt your low end ect.

On my 03 viper car i picked up 68 rwhp sae and 52 rwt sae over the stock cam. Power and torque was higher at every rpm.

Im planning to add this mopar kit to the 710 cam...

You add the 710 cam and you wont just pick up 40 rwhp....lol......710 cam plus your mopar package and you will gain close to 100 rwhp.

In no roe racin rep or nothin like that. Just a guy who was a guini pig with that cam like you are with this kit and plans the mopar kit next year..

I cant get over this...70 rwhp on one of your trucks from just headers plus heads is amazeing!

 

[SRT10VENOMOUS]

If you want to speak to someone with experience on these conversions and making them run with big hp , let me know.

I bet it would run those times at ATCO or Englishtown (or a ski slope near you), but in all seriousness, after having it a couple of days and driving it more aggressively, it runs very good. Shifting right at 6k rpms, the revs don't drop much with the 6-speed, and it pulls extremely hard on the 20-100mph pulls I've done. Definitely doesn't run out of breath on the top end.

I don't know much about the 710 cam, but what I want is something that will be very streetable and street legal, AND I don't have to go spend more $$ on new valvesprings/retainers/keepers and potentially machine work for the spring seats. So it is indeed going to take some significant R&D, b/c I have no idea what the Gen IV springs can handle. I've tried to find Gen IV Viper cam specs, but given it is VVT (or some form of it, I believe), I'm not sure that would be much of an indicator to go by.

You're right... I basically have a Gen IV engine (minus .1 L and a little compression, and no variable timing cam), so given those variables... my HP/TQ is probably about right. It's just not what was advertised.

 

[kymcraig]

hey fast
actually saw pix of ur engine from david thinking of sending mine for a build and sc any input were u pleased with what u had done would u change and have original heads worked on knowing what u know now

 

[Race1Mopar]

Congratulations on your upgrades!

David, Chris and crew at ART are quality folks!! They did a lot of work on my truck and I can tell you their finished product looks just that, factory clean!!! They also have some great experience with viper engines, trucks and cars. They have been racing several of those vipers and coming in 1st and 2nd and a 245(maybe 6) mph run on one of their vipers in the Texas Mile.

Great shop, great guys for you to have in your corner.
Joe

 

[WA 2 FST]

hey fast
actually saw pix of ur engine from david thinking of sending mine for a build and sc any input were u pleased with what u had done would u change and have original heads worked on knowing what u know now

I am pleased with the workmanship and professionalism of David, Chris, and the ART team.

I would have liked to have seen more power out of the combo, especially given what I spent... however, the truck runs fantastic. Everything for these things is expensive...although there is _no doubt_ I could have done this cheaper.

What I would have done differently is have a cam installed at the same time. The heads, intake, exhaust and overall fit/finish of the parts I have is excellent. It just needs a better cam.

I am glad I didn't go the blower route for now b/c I would have never felt comfortable without forging the motor first. Since my truck only has 16k miles on it, I didn't want to build a forged motor just yet. This one has a lot of life left, and since I only drive on street tires, I do not need 600-700rwhp. I was hoping for ~540-550, so it was short of my expectations, but that is not ART's issue.

 

[Final GTS]

:Throws Monkey Wrench into thread:

 

[yellowfever#154]

Those throttle bodies look sweet.

 

[WA 2 FST]

stock Gen IV heads with stock valvesprings? what cam did you go with? looks awesome!

 

[Final GTS]

stock Gen IV heads with stock valvesprings? what cam did you go with? looks awesome!

Yes. Contrary to popular belief, you leave Gen-4 valvetrains ALONE. They are 6500+ RPM capable out of the box, wear very well, and are very light and reliable. IMO, the lighter and more responsive valvetrains win over the heavy springs approach every time- same capabilities in most applications, with better lifespan and wear characteristics. The Gen-4 valvetrain is actually very nice compared to any previous versions. Hollow stem valves, triple locks, light steel retainers, nice beehive springs, fully machined valve heads, etc. Also, porting Gen-4 heads has proven to be somewhat futile in the $ per Horsepower department. The G4 manifold is excellent, but it is well matched to the factory porting, which is no joke to begin with. To really see major gains from head porting, you would need a radical cam and/or some more manifold volume.

Cam is a custom grind billet. It is a torque cam, somewhat middle of the road on the "extreme scale"- no sacrifice in low end or driveability.

 

[rottenronnie]

Looks great !!

Twin throttle bodies create a bit of a challenge in the trucks when it comes to air cleaner routing, if anyone is thinking about it.

The same situation comes up when using the Gen II Intakes on these engines.

Best of luck with your build.
I'm a BIG fan of going the N.A. route with these engines.

Ronnie

 

[Mamba003]

Amazing build Dan. That owner has got to be dying to get that car back....

:Throws Monkey Wrench into thread:

 

[ViperPete]

Beautiful!

 

[ViperPete]

Bump!


So did anyone do this in a Ram yet?

 

[ARRESTmeRed04]

Bump!


So did anyone do this in a Ram yet?

Go read the thread goober, this thread was about wa s fst doing this to his truck

 

[ViperPete]

Go read the thread goober, this thread was about wa s fst doing this to his truck

ahhhhhhhhhh :dontknow:

 

[caveman]

Go read the thread goober, this thread was about wa s fst doing this to his truck

Don't mislead people, Justin. It's not nice.

Bump!

So did anyone do this in a Ram yet?

Nope. A couple people tried it, but the way the power came on was just too much for the truck frame/crossmember to handle. People even got hurt, though thankfully no one died. JTSVenomous1 had a solution to make it work (bleeding off power through a much larger crankshaft pulley, I think it was), but no one has tried it.

You should do it!