Getting the Grand Prix LS4 ready for 700HP

It took almost two weeks but the heads finally were finished at the machine shop so I decided to pick them up and put the LS4 back together and then I made sure to clean everything while I was at it.
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David Nenno

[@jamesjohnson4093]

I could watch your videos all day long! Something about the way you explain and show everything that is such a great learning aspect. Awesome job Dave!

[@daynerampersad8968]

you should powder coat the valve covers red so the grand-prix can channel its inner corvette

[@anthony2816]

After months of watching all his videos, I've finally reached the point where I can say that I watch Junkyard Dave's videos purely for the ASMR effect. It has nothing to do with cars. The fact that my daily driver is a Focus ST confirms this, as such a brand and type of car is absent here. And JD, I thank you for introducing me to the musical artist Ooyy; I discovered his song Tei through your channel, and it's now one of my favorites.

[@Shiftheads]

😂 I was literally telling that to Dave while we made this video.

[@ramshacks9493]

Gosh I'm lucky to have a 09 impala ss I've been seeing its prices are going to go up due to people actually swapping out the old 4t65e to the 4t80e now that it can make so much power

[@bkirwin]

Glad you hit up Brandon for the swap kit for the transmission. Check out LS4 Nation group on Facebook. Lots of good builds

[@deanh7190]

Have an electric pressure washer as well. You have to check out a Hyde pivoting nozzle wand extension for yours. It's awesome for angling the tip on the fly with grip twist. Looking good!

[@willmatic84]

This is so awesome man 🙌🏽 cant wait to you do a nice burn out with it

[@kenny87green72]

Hey Dave glad u not getting burnout on the hellwagon it cool take a break and build something else just don’t forget about it 💪🏿💪🏿

[@marlikwinnin]

Can’t wait till it’s finished it’s crazy he’s building something dodge should of builded a long time ago

[@Kiwi-pp7rg]

Don't worry about what other people think, its all good stuff mate, keep it up!!

[@bgee461]

Great work. Nice progress on the project. As for the charger, it's alright, the video will have real actual content when we finally see it. 👀

[@skylarscales9922]

I can’t wait to find a SS so I can do this too !

[@brianproffitt7263]

I’d have to go Pontiac like Dave, mostly because you don’t see them as much.

[@Freddy_Tiffany]

I got an 08 Impala SS, New trans about 6000 miles ago and its tuned, I have a few new engine parts to help kick off the rebuild and a truck intake manifold that ill throw in too. Im looking at $7k. White ext, grey leather int, aftermarket headlights, tail lights, and an HP Tuners tune.

[@richardthomas1743]

Good morning Dave and thumbs UP to you

[@blckopssnipingmdsgms]

So what makes it 700 HP... Manifold is stock.. Heads are stock 243s... Exhaust is stock only thing I see different are the arp head studs and ls7 roller lifters and the obvious dod delete maybe? I'm just confused

[@michaelreynolds1904]

You should check out Mitchell Stapletons channel. Putting a nice simple turbo set up together on a 5.3L Suburban, turbo will support 800hp, insanely reasonable price.

[@blacknova23]

I always wanted to see someone put a grandprix ls4 into a 2000-2011 Cadillac Deville/DTS. This would be my ideal cruiser. These cars are incredible with out the northstar.

[@ryanheisey7719]

I really need to start getting parts bought for my future LS4 F40 6 speed manual Beretta GTZ swap still has the original 2.3L High output DOHC quad 4 in it with a getrag 282 5 speed but just spit out yet another head gasket I'm done trying to save that motor it's the 3rd time it's been done second time since I've owned it so it's time for the V8 I want in it while the quad 4 is fast it's just too expensive to redo each time with the parts and longevity of it

[@BassManBobBassCovers]

That's quite the before and after holy crap!

[@kriskoehnke3779]

Need that motor for my fiero

[@RedEye19]

I can’t wait to see the gainer your little Fiero would do when hitting the throttle. The resulting weight to power ratio would be hilarious !!!

[@patrickmoodabe9728]

Awesome work Dave. Multitasking! Also - great to have another pair of camera hands. Don’t care what order you do it in. So pleased you’ve found someone capable & you’re confident to take on the rampage clear bra process. The car will be a work of art. Should blow SEMA away. Cheers mate🤙🤙🤙

[@SteelBlueBody]

Grand am looking good! 👌 I got to clean my engine cause its dirty!

[@Austin-316]

There is absolutely no way you achieved 700 hp in that LS4 😂 this guy has gone off the rocker 😂

[@normanvapes9197]

Misc content makes me happy

[@Will_JJHP]

Good job on the engine cleanup. Was the etching on the driver's side head already there or was that from oven cleaner you didn't rinse off? Wish you showed more footage of the engine bay detail/after shots but still really satisfying to watch!

[@BrucePierson]

Hey Dave, be careful that you don't get your head sun burnt with summer coming on. You might have to start wearing a hat now that you have a new haircut. Opposite weather here in Australia, where it's getting cold, even here in Queensland.

[@Nycitybx16]

I might have to contact you to work on my impala ss

[@jacobphend6706]

Hell ya Dave keep it up man gonna be nasty.. can't believe nobody has picked up on what your plans are on this build yet. Can't wait to see Rampage polished a clear bra.. any luck finding a cheaper track hawk?

[@Junkyard_Dave]

No luck yet but found a bunch of parts for the hellcat stuff

[@Freddy_Tiffany]

This is dope, but why didn't you do the intake manifold swap as well while you had the powerplant out? Soooooooo, where ya located Im tryna get my Impala done up lol.

[@fopeezy3097]

powerwashing.... so satisfying

[@scott.t1714]

What is that stuff u use to clean the engine bay with cones up nice

[@rbelishizzle6282]

Should find a Fiero GT and put that in there. RWD, would be a cheap McLaren replacement with 700HP!

[@tillmanxl6914]

Dave, what is the update on buying the Junk yard?

[@turodudley6103]

Where u located I would love for u to do my gxp Grand Prix

[@ruwithlee1970]

U should put it in a Clean G-Body? What do you think ? Cutlass maybe a Monte Carlo? There is one behind you in the shot! Probably could get Free?? Just think you're own AWD G BODY Like that guy with the Black Cutlass?? He graphed a bravada front frame set up and dif!

[@Shiftheads]

Yeah awd cutlass has a beautiful car. The ls4 is meant to be mounted transversly though whereas the fbody has a longitudal motor and trans with a bravada transfer case

[@davyyoungin1772]

One thing I do know about a LS4 is the intake suffocates the motor…. It’s a horrible intake Second a wise man always told me you NEVER send boost thru a PLASTIC intake Keep us posted

[@AHaye-bf1wu]

Hey Dave I have a 2017 Dodge Charger Hemi PPV I want to get rebuild. Can you help or point me in the right direction? I definitely wanted to upgrade cam & lifters & tune

[@w41duvernay]

DAVE, just saw Howards cams makes an ls1 variable duration lifter. CAN these be used on an aftermarket cam like a Comp cam xtreme cam, in a ls4?

[@MonzaRacer]

NO, JUST NO NOT ON A ROLLER Rhodes makes them for flat tappet but with roller profiles if you have that much duration you into full race ,solid roller drag only,race only shit

[@jaysmoove6442]

When ur done with urs can u do mines next?

[@MD-le5yp]

Good morning

[@MatthewTyreeKS]

You should widebody the Grand Prix and put some wide tires on it.

[@cainpaul08]

You get the codes clean and things fixed on the old bosses suv?

[@sethg5619]

whats your plans for the transmission. I'm a ls4 owner as well and am more worried about the transmission side of the build. Any recommendations?

[@sirlukesalot4994]

Triple Edge Performance is your best 4t65e-hd rebuilders. Give them a look up. Also just call around local shops. In my city there is about 12 transmission shops within a 15 mile radius. The ones that didn't want to build it where honest said that they didn't and told me where was good. Found a local guy that built 4 different 10 second cars on 4t65s and another shop that would install a kit I found for 1200$+ the kit

[@sirlukesalot4994]

If you're going crazy with horsepower you'll want to do a 4t80 they're not a direct fit requires some grinding and shaving in a few spots

[@maroz2881]

Are you going to run a super damper crank pully??

[@memphisreigns4663]

Foam cannon needed!

[@thedaviswayy]

Keep updating on the gxp

[@cbforme]

What is the degreaser that you use it works amazing

[@Junkyard_Dave]

Its oven cleaner but you cant leave it on aluminum too long it will turn it black

[@BrucePierson]

@@Junkyard_Dave There's another type of oven cleaner that is safe for aluminium. It doesn't affect the aluminium and is designed for use on aluminium cookware as well as ovens.

[@peterjunelaxamana3455]

Awesome

[@ambroselake9156]

Do you have any 1995-99 Oldsmobile Auroras? I'm in need of a engine splash shield I will pay for it.

[@vincentmujeesh3025]

Dave you might as well make the prix awd while u at it lmao worlds first awd gxp?

[@Shiftheads]

😉

[@Tunagraphix]

Hey brother need help, would it be a simple swap the ls4 intake manifold with an ls3? Thank you for any info

[@zipp9639]

I know this comment is old but no ones done the ls3 intake as it's too big compared. the ls2 and ls7 intakes fit, the ls7 being the better option

[@Tunagraphix]

@@zipp9639 appreciate the info, I did see that the ls3 manifold is much bigger, I saw some guys have to do a lot of shaving and cutting to make it fit. Too much for me lol ls7 might be the option. To go when I decide to do it.

[@alphaboltz]

I’m sure you did but did you remeasure for push rods, decking the heads will make factory push rods To long

[@jamesonwalker4263]

Dave get with khal_srt he has a hell elephant for sell

[@bmorebaze226]

Check out Cartuning performance.

[@MonzaRacer]

Please tell me you at least used new head bolts

[@NoAutoBoomin]

You think this can fit in a 2017 altima

[@garyjacques6139]

Are you going 4T80???

[@H3mif4v5r]

Somebody told me after 550hp it would be pointless due to the fwd?

[@jimmyford271]

I thought you would have put a nice set of roller rockers it.

[@Junkyard_Dave]

It has new bearing upgrade

[@jimmyford271]

@@Junkyard_Dave I’m talking full roller.

[@Shiftheads]

It has the trunion and bearing upgrade so no need really. This thing isnt going for any rpm records. It's a stock rocker body but everything else is nicer stuff

[@jimmyford271]

@@Shiftheads full roller frees up hp at any rpm. Just saying.

[@Shiftheads]

@@jimmyford271 actually they don't really free up horsepower over a stock rocker arm with trunion upgrade. The stock rockers are actually the lightest option out there and with the trunion upgrade they will handle 99 percent of the builds out there. Full roller rockers put more weight over the nose of rocker but they do better at eliminating the side to side motion on the valve stem than stock rockers. On older engines maybe they would free power but it's usually because they swap to higher rocker ration giving more lift. On a LS like this you wouldn't see a horsepower difference

[@BetterCallGatto]

I cant Bealive Dodge didnt Call u yet and offering a position there. Your Build might compete with the New audi a6

[@SketchyWhiteBoy]

Do you still own this?

[@MrRagequitnow]

So I assume this is a 4L80 swap as well? If so who did you use as your trans builder? I just picked up an LS4 and I need an upgrade trans over the 4 65. Also instant sub.

[@Junkyard_Dave]

A good stock 4t80e should be able to handle 500ish I have never got mine to shift and there is no support probably just build the 65 if you want to drive your car

[@derrickbailey7681]

What happened to the gxp build

[@Junkyard_Dave]

There are plenty of newer videos on it

[@lstz31]

stock headbolts huh?

[@E550Boi]

That's a lot of work just to choke her out with the stock LS4 intake. Disappointing.

[@zachhinkley6012]

I want my GXP to make 700 hp lmao

[@MonzaRacer]

😊if you kept ls4 intake you just cut yourself out of at least 60hp

[@fsozack_]

Still doing this project?

[@Junkyard_Dave]

Yeah the 4t80 swap kit that was supposed to only be a few weeks out has now been almost 2 months

[@fsozack_]

You got it from Brandon? And join the ls4 nation group on Facebook highly recommend but thanks I been looking forward to this project lol

[@fopeezy3097]

For the algo

[@Bowtiebickham]

ls4 for 7+ more

[@veenieyourmom912]

That stock intake manifold is costing you 50hp😢

[@Junkyard_Dave]

I have a new on but haven't messed with it because of the transmission

[@license2kilttheplaidlad640]

A little bit warped ? Wtf