These PPE Cast Iron Heads Will Change The Duramax Game Forever! *First Look* 

Check out these cast iron cylinder heads on the website 👉 truckmasterdiesel.com

"Injectorless cups" LOL

Hello Josh and Melanie. The new heads are awesome. Can't wait to see them on the Wifemax. And hear what she sounds like.

That is really cool. I didn't even know about this. I did my head gaskets a year and a half ago. The cups were installed by the machine shop right after they resurfaced the heads, which is the incorrect way. 6 months later, my cups were leaking. I was disappointed. I learned that the cups are supposed to be installed, and the injectors torqued down right away. After that, I haven't had an issue since. Pushing 325,000 miles. I've read about threaded injector cups, but it sounded like more of a risk than anything having to cut threads into the head. I bought my lb7 duramax 3 and a half years ago off of craigslist. The engine was blown, so I got it pretty cheap. Bought a wrecked truck with similar miles to use as a donor truck. Your how-to's have kept me on the road time and time again. Thanks Josh!

Stock duramax heads are plenty good enough. People make well over 1000hp all day long with no issues! Only way I would even consider going to cast is if mine ever go.

Josh the new hp for the 2023/2024 L5P is 470 hp and 975 torque GM is saying these numbers are for the first few gears in the ten speed and the 6.6 L gas engine is getting the Allison ten speed transmission I seen this on TFL Truck video

Who else doesn’t even like duramax trucks but still watches this channel to see him doing real work to Diesel engines unlike other youtuber s who just drop their truck off at a shop

Super excited to see you use these, doing an engine rebuild myself and they are on the list! Can't wait to see the results!!

WOW.... Very cool episode. That is a game changer. Perfect for compound turbos in heavy boost applications. All your points are very valid and something to consider. When you said $1600 each, I about spit my coffee out on my computer. PPE did a good job at hitting a good price point. Cast-iron heads are just brutally tough, but they were priced too high for the average shade tree or DYI enthusiast guy. 2 years ago, when I drove off into my build, I wanted a pair of these cast-iron heads, but they were just out of my price range and didn’t seem rational for my build. Some of them were around $5500 apiece - race ready. That’s a little steep. I was super pumped when Edelbrock came out with their aftermarket aluminum heads. They were made from the same 625 hardened aluminum and incorporated the injection cup into the block - super big bonus for Around $1700 apiece. Nick Pregnizt at Calibrated Diesel ran a good comparison on a dyno - right off the shelf. In my view, the results were less than impressive and didn’t justify the cost and really weren’t that efficient. If I purchased the heads, I would still need about $1800 worth of porting and machining to get the kind of performance I wanted. I’m not knocking the Edelbrock heads, but we are talking about money and horsepower in the same breath - it can sometimes break up of family and a divorce. So, for six months, I dove down the cylinder head and camshaft rabbit hole. Hard to wrap your mind around everything that happens in milliseconds and small fractions. It’s mind-boggling. Had a lot of discussions about heads with Guy Trip and Gabe at SoCal, Austin at Wagler.....and 10 others…. I even called the God of the camshafts himself - “Banks”. I wanted to move more air smoothly and evenly, get the heat out and create a bigger swirl and build big pressure in the cylinder chamber. That’s really difficult to do with direct injection. The only way you can do that is have a custom port job by someone who really knows what they're doing. It’s just not rounding off sharp edges, there is actually a science to it. Very small changes can make a huge difference in performance and the life of the engine. These heads would work just fine for applications around 850 hp “ish” and last a long time. Anything more you’re going to be needing some durability. Especially when you’ve got a very large compressor pushing large volumes very quickly. (Maybe wise to consider 625 ARP head studs at that point). The cast-iron heads are so much more durable. You can push all kinds of pressure through those and those won’t tweak one bit. Since their iron, they expand and contract at the same rate as your block - that the big thing. This looks like a good deal. Thanks for making an episode on this. I don’t think it’s fair for you to pick on “Earl”. He’s a good guy and a snazzy dresser. Thanks for the content - keep up the good work :)

I love LB7 Duramax best freaking truck I ever bought my lif

It’s cool seeing linco gets some recognition. I live 30 minutes from them. If I ever have to get head on my lb7 I’d probably end up going to the cast iron heads just for piece of mind

I just ordered a set for my LLY today on Black Friday. Saved over $300.00.

blown head gasket 2001, coolant overflowing from reservoir. Thank you so much for this video, just ordered these.

Getting rid of those cups is a big step in the right direction for sure!

Love the heads nice to get rid of the injector cups

Very cool... looking forward to it all coming together. You have come a long way. But it is all well deserved. Kudos to you and Mrs Truckmaster.

Nice Josh I love your lb7 content I got a 03 bone stock with 288k miles and been wanting to build it up one of these day. The cast iron heads seem like a great idea.

You are 100% correct on the head gasket problems caused from rapid expansion rate differences between aluminum heads and a cast block especially without the proper warm up on a Diesel engine.

I didn't even know these were coming out. That's an awesome upgrade, I can't wait to see them in action

I always wondered if this was going to be worth it since the release, a lot fo good info here Josh, thank you for helping us make our decisions easier!

Always love the informational videos Josh. I've learned a lot from your channel over the years.

Thanks for sharing these Josh!!

Awesome thanks for the info man always enjoy watching your videos thanks for all the knowledge you've given me with these duramax trucks

I am so glad to see this! I agree josh, cast iron for the win. Thank you.

Proud of where you have came! Was just up at crooked foot sunday for a pheasant hunt🙌🏻

That is a pretty awsome product, I didn't realize the lb7 had aluminum heads stock, that will by far out last the stock heads for just 300 bucks more yea its worth it, small price to pay for endurance!

Sweet heads. Thankfully I have 2005 LLY so I don't have those issues. And these heads will more than likely resolve the gasket issues. And making more power won't be a problem. Curios if your going to upgrade the bottom end of your build? If so i look forward to hearing about the parts you will be using.

Thanks for your videos 😊I don’t know anything about diesels I just bought my 01 Sierra Lb7 and I’ve done many of your mods - you got a fan from Los Angeles California 👍🏽

Deff gonna need a good cooling stack for them iron heads once there warm an heated!

I just slapped some on my LBZ. They’re awesome!

Maybe in the future... I'm midway through my first duramax head gasket job... gonna wake up tomorrow and start washing parts and hopefully start putting back together tomorrow

PPE make excellent products , nice iron heads Josh

I think your makin a smart move! Its like guys are going pricey aftermarket aluminum heads on the 6.0 psd's I dont see the gains other than weight on a diesel engine. Not like a gasser that needs aluminum to run 11.1 to run on pump gas

Side note, a lot of commercial drain pipes waste water and storm water are cast iron. Cast iron drain pipes are much quieter compared to other piping methods such as pvc.

I wish to hurry up and get aluminum radiators in and I got a 2012 I would love to have a set of cast iron heads for it also upgraded cuz I'm fixing to put head studs in new head gaskets on it soon anyway

Great job

Cups built into the heads. Yaaaaassss 🤘🥳🍻

I know it's an old video curious how things went with PPE heads. I need to put heads Gaskets on thinking about going that route.

Love your page. Shoutout from KY

I litterly just bought fleece performance heads for mine like 2 months ago

SWEET DUDE

Nice one Josh 👍🏻

Looks good.

You and your wife have the best Bad ass diesel show on RU-vid

I have been looking at cupless heads for awhile now as my lb7 needs new gaskets and injectors. Maybe it's time to go through the whole motor and make it bullet proof with these heads....

For the lb7 this is a no brainer to eliminate them injector cups. Its worth it in the long haul to spend the money.

Cast iron heads just sound bad ass

The Wifemax is going to be a monster.

It should work really good because even if they hole for the injector wore out a little you could use a thicker o-ring and it wouldn't have an issue atleast in theory ❤️

Hey brother we got ur back brother we support u 100%

You should make more videos with the ford

I don’t have cast heads but I do believe in iron vs alum

I gotta get me those iron heads

Us cateye owners need a intermediate steering shaft video! We know you've been neglecting it like the rest of us 👀 STL local, LinCo diesel is the best around, grew up 15 minutes away. Its crazy how small the performance diesel world is!

did u ever follow up with the sound test?

What’s the link to the hsp full pipping kit can’t find the full kit with everything for my 01 lb7 and the link for ppe pushrods!

I wish ppe would of out o ring on the head like the 6.0 have so they can bite more

Hey man, have you ever dealt with tcm issues on the 6 speed Allison's?

Going to push my injectors to 30-60%. It’s a lly. Anyone recommend what I should do next. Maybe bigger piping fuel pump?

How do you know if your cup seals are leaking or the head gasket is leaking

Trying to find a new block for 2006 LBZ or someone to restore the factory block

I wanna see some 6.0 content!

Thanks for sharing 👍. Does " P.P.E." have a performance cast iron head, meaning ported, larger valves...? Thanks again. 🤘👍🇨🇦 😁.

Will you be upgrading the crank and pistons?

You only have one head on the website, does it fit both driver and passenger? Sorry if thats a newbie question lol

what are the best injectors for GMC 2006 duramax?

PPE have any plans to have these heads available for lml??? Not sure if lml have cupless injector heads or not.

Will these heads eliminate removing the valve covers to change the injectors? That’s the one think I hate about the LB7.

I’m on ads still but curious if anyone has used/ has info on the edelbrock duramax heads?

Is the engine block Aluminum or cast iron? Won't the Engine block crack if it is aluminum? From the extra 80 lbs 40lb each side? I'm no mechanic. Just curious is all.

When’s the next shorty duramax video?

Those look like they'll hold on to at least one psi worth of boost.

I was going to ask about LBZ heads. I see what I'm going to get.. lol

I just brought fleece racing heads and now people want release them

Can you get these for a lml

Would you be interested in selling the old injectors from the old heads?

Wast of money except maybe the LB7. Just to get rid of the cups. Which you could always do screw in cups.

Wish I'd seen the 5 percent off on rds just bought a 64mm for my lb7 last week

Man these are pricey, I like the idea though. I suppose if your heads are junk you might go this route.

I had a Tundra for years, never had an issue, just a regular maintenance. Now, I bought lb7, though it's reliable. Should see all of these videos before buying it, that whole engine is supposed to be rebuilt. Waste of time for no reason...

It's still an lb7 tho.

FIRST LOL !!!!!!!!!!!!!!!!!!!!

Not a fan of aluminum cylinder heads for diesels. Also not a fan of aluminum pistons either. Huge fan of steel pistons and cast iron heads.

Thanks and Never ever Vote democrat!