350HP 12V Cummins Build

Getting this 12V bumped up in fuel and reliability!

[@JaegerWrenching]

It's always the customer's who don't care about price that get the best job IMO. It allows the tech the time and parts needed to do everything right. Old trucks need more love when hoses, gaskets, and o-rings get old. I just finished a 6.0 for a good customer like that with many issues including all the CEL's for misfire, injector circuit, low/high ICP, EGR were all turned off and had a edge in line tuner stacked on top of a SCT tune... Truck had a bad Oil cooler and 3 bad injectors. It was supposedly a "tow tune" with 2360us lol. Most 6.0 "race" files I've see are 2500us, and most higher milage trucks with worn injectors and HPOPs will only take about 2300us. Even with a good HPOP and stock injectors 2300 to 2500 isn't but maybe 20HP at our elevation. I spent extra time and fixed many little issues and so he left very happy. Those are the customers who make it worth working on vehicle's.

[@horsetorquesdiesel]

I couldn't agree more love doing that work for those customers

[@goodgravy54]

That's a real factory racetruck!

[@connertait5424]

Those SoCal trucks stay so nice. Awesome!

[@Balakay9435]

Hell Yeah Brother 🇺🇸🦅

[@slowaf12v]

Nice Video Josh! #ppumptheworld

[@dbfabworks5320]

Great stuff!!! Love it!!! Couldn't agree more on the customers. Keep it up!

[@joehenry9070]

Great job explaining how to this work. Tell your wife Happy Birthday from all of us tomorrow!

[@horsetorquesdiesel]

Thank you! Will do!

[@user-ho1lz4jg8t]

The 12v trucks are awesome in my opinion. Good video 👍

[@marklowrey4694]

Love the 12 valve!! We have to keep these Old Girls on the road 😀

[@horsetorquesdiesel]

I do my best

[@scmroman]

Setting valve lash right after doing the springs would've been a good idea when I did springs on my 07. I backed all of the adjusters off because I was replacing the rockers at the same time and by time I was done I had no clue if I had the engine in the right place to set lash lol.

[@horsetorquesdiesel]

Yep it definitely can help!

[@mikeflick4737]

You can get top cap valve seals that are made to fit the stock 12 V head. I bought a set for my 97 215 HP manual Trans engine.

[@horsetorquesdiesel]

Yeah, except when we tried them a few years ago they tore at high rpm

[@RippinRaz]

Gauuudannngggg lil 12v action

[@ryanoconnell138]

Gtreat video 🤘

[@mikecollins8241]

I'm glad to see some 12v content, I like your channel and that is what I have, so.. I've done the governor springs (3k) and a "0" grind on the fuel plate, and turned in (?) fuel screw some.. would delivery valves be the next step to gaining more power? Or would AFC Live be a better investment/ overall gains? Would valve springs be needed if I stick with the 3k governor springs?

[@horsetorquesdiesel]

AFC live will dial in the power better, but DVs will generate a bigger increase

[@bcbloc02]

Surprised you didn’t convince the guy to go ahead and do the head gasket and put that extra time doing springs and seals in on the truck towards doing it on the bench. If it’s legit 350rwhp and those miles it likely will be sweating coolant or oil soon.

[@horsetorquesdiesel]

I hear you, but just wasn't in their budget

[@t3dieselperformancerepair228]

Prosource diesel makes Tophat seals that don’t need machining.

[@BCnAK]

Finally…… back to some Cummins content!!!!!!

[@Kentmansley274]

🤓

[@ryanhappygilmore2426]

I just bought a 93 d250 with 132k

[@jarrettjones4690]

Still worth more than my ‘15 duramax 💯

[@horsetorquesdiesel]

The sad truth 😂

[@grant_6.7_5th_gen]

I was like didn’t he just post this same video but I think it was on tick tock I still don’t know but know I just seen you work on this truck right?

[@horsetorquesdiesel]

Yep we cross post for sure!

[@michaellashway3362]

I have an 05 Cummins motor is bad found an 03 runs great. Question I have us can I change nozzles of something to make my new 05 injectors work in 03 motor and is there anything else I need to do to make the 03 work in my 05

[@horsetorquesdiesel]

You can but send them out to be changed so they can be balanced

[@daviderickson6933]

Sunglasses come down to the end of the nose speed bumps!!!! absolutely not

[@horsetorquesdiesel]

😂