SKU: 77455170021

Industrial Injection LB7 Duramax Race Heads (Pair) 01-04 6.6L GM Duramax

Sale price$2006.13 Regular price$2229.03
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Description

Industrial Injection LB7 Duramax Race Heads (Pair) 01-04 6.6L GM DuramaxBulletproof. that's the best way to describe this pair of heads for your LB7. Featuring fully CNC porting and screw in torque lock injector cups, they've got all of the bells and whistles for a full engine build. THE PROCESS: Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for

Bulletproof....that's the best way to describe this pair of heads for your LB7. Featuring fully CNC porting and screw in torque lock injector cups, they've got all of the bells and whistles for a full engine build.

THE PROCESS: Heads are first jet washed in a high pressure spray cabinet to remove oil and dirt, then glass beaded to remove carbon. Next they are checked by magnafluxing, (cast iron only) or pressure testing. They are visually inspected for defects that would make them unusable. Valve guides and seats are removed as needed for porting.

Port development is accomplished using a superflow 600 flow bench with a computer recording all flow measurements. Many things are considered when designing a cylinder head Port; air flow is only one of the things to think about. Another major concern is port wall thickness. Anyone can get a head to produce high flow numbers, but if doing so leaves the port wall too thin, the casting will crack. High performance diesel heads are more prone to crack because of the thermal shock experienced by excessive intermittent or long term exhaust temperatures.

The porting is then performed using a five axis CNC cylinder head porting machine with CAD/CAM software specifically designed for cylinder head porting. CNC porting brings unparalleled accuracy to head porting with each port flowing the same. This helps balance the power that each cylinder produces, making tuning easier.

New high strength alloy, heat treated iron based valve guides are installed. These guides are heat treated to Rockwell 22 "C" Scale, which produces the ultimate in wear resistance. This is far superior to original guide material, including bronze. The guide incorporates a spiral grove inside the guide to hold oil and aid the lubrication of the valve during engine operation.

Guides are then honed (not reamed) to exact size using a diamond honing mandrel. Diamond abrasives allow for consistency of size, surface finish, and bore geometry with no variation from guide to guide. The guide size is then verified using a valve guide bore gauge.

As needed the head receives new premium valve seat inserts made from a true nickel based non-magnetic material that was developed for extreme operating conditions. Next the head is treated to a multi angle valve job to help maximize the flow of air in and out of the head. This is accomplished using a Serdi 100 guide and seat machine. Serdi uses a solid carbide straight shank pilot. When inserted into the valve guide, it simulates the real valve stem during the centering process. This guarantees the valve seat is finished for a perfect valve to seat match.

Using CBN or Diamond tooling, the head is given a new surface. With a berco milling machine, Industrial can control the surface finish to accommodate different head gasket types. For example, MLS head gaskets require a very smooth surface finish. Finally, the head is jet washed dried and assembled with new valve seals and new performance valve springs.
Shipping Notes
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SKU: 77455170021

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David Charles Logan, MD, MPH
Waukegan, US
★★★★★ 4
An inspiring and engaging tale.
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A Place for Us is a heart-felt story of love, redemption and second chances.
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Reviewed in the United States on August 12, 2025
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Grantham, US
★★★★★ 5
A Place for Us
Format: Kindle
Oh! 15 gold stars for this one! This book is so poignant and so very brave and authentic! This book is a permission for us to choose what we will and will not accept in our relationships. This book is more than hope, this book is determination! Pure driven determination to not settle, but to go to the mat to have our life the way we want we want it. I cannot over recommend this book. Thank you, Patricia Grayhall! Keep writing!
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Reviewed in the United States on June 8, 2025
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Cecilia Lim
Chelsea, US
★★★★★ 5
Finding a Home
Format: Paperback
A Place for us is a beautifully crafted and deeply moving love story about two women--one American, one British--who first meet in their youth and reconnect decades later. At its core, the novel portrays their struggle to navigate restrictive immigration laws in pursuit of a life together. Their journey highlights the urgent need to protect and legalize same-sex marriage, especially at a time when such rights feel increasingly precarious. A timely and relevant read.
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Reviewed in the United States on August 14, 2025
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Maggie May
Phoenix, US
★★★★★ 5
So good
Format: Paperback
RATING : ⭐️⭐️⭐️⭐️⭐️ SPICE: 🔥🔥 Hot damn Hannah did it again .if you want to read more sapphic romance, this one will absolutely blow your mind! Bryce and Daisy were everything I wanted and more! Fake dating will always be the superior trope, but when it’s forced proximity grumpy x sunshine and the grumpy one is secretly head over heels for the sunshine one, well I’m a damn puddle on the floor! I still can’t decide if I loved Bryce or Daisy more, but I do. Know this might just be my favorite book Hannah has ever written. ☀️ Fake Dating ☀️ Grumpy x Sunshine ☀️ Forced Proximity / Roommates ☀️.Tattoo Artist / Teacher ☀️ So much pining I love Bryce so much. She is a total hard shell but she has such a gooey inside and she showed it so well with Daisy. This whole setup was fantastic, Daisy needs a place to stay so Bryce gets volunteered to give up her spare room. Daisy think Bryce doesn’t like her, but then you get to Bryce’s POV and you realize how down bad she has it for Daisy. Then Daisy proposes the fake date and OMG the tension. The longing. The secret tattoos. I loved every bit of these two figuring each other out. Watching Bryce absolutely melt for Daisy was just so so good. This may be a slow burn, but when it burns…. It’s an inferno. And the tattoo parlor scene is imbedded in my brain forever. Just everything about this made me happy and I will forever love Cherry Peak, these characters and this series! Now bring on Darren!
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Reviewed in the United States on January 10, 2025
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Kristee Cat
Waukegan, US
★★★★★ 5
Love them!
Format: Paperback
“Calling Daisy Mitchell mine is a dream that I never planned on coming true but always hoped would.” Gahhh my first FF and I’m hooked! Thank you Hannah! Daisy and Bryce are as opposites as can be, one is pure sunshine and the other is as icy as can be but they couldn’t be more perfect for each other! I love the slow burn with all the sexual tension as they pretend to date while living together. Love the way they take care of each other, the love and admiration so evident in the way they touch and look at each other. Their nicknames for each other is just so cute and perfect! I love these two so much! Such a great addition to the Cherry Peak series! We get more of Johnny, who happens to be Daisy’s twin and I just can’t get enough of him either, he’s just so fun. And of course we get to see more of the rest of gang. Love these found family and I can’t wait for more!
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Reviewed in the United States on January 19, 2025

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