Anyone done the diesel conversion?

[johndjmix1]

Just curious if anyone on here has actually parted with the large sum of cash and done the Duramax conversion. A few companies do the conversions, which did you use?

Too much $$$ for me but wondering if people are happy with it.

--John

[nmu98]

I have seen two if them. A fairly local shop does them, and they have a lot of d-maxes sitting around, so its not always as expensve as one would think.... If they are not busy, its reasonable. The issue as I see it, is not putting the diesel in the engine compartment, its about fitting in the mamoth allison that its mated to..........

[IRA51]

You got that right ,i belive you need to massage the trans tunel quite a bit. I have had the Allison out of my 2005 chevy ext cab 4x4 Dmax (LLY) 2500 truck to put a Suncoast IV and converter in it and it is HUGE and very heavy . if you put a heavy tune 100 hp or more you will fry the alli,and I did at 25000 miles .with the Suncoast that won't be a problem again ,rear tires are the problem .

[nmu98]

Originally Posted by IRA51

You got that right ,i belive you need to massage the trans tunel quite a bit. I have had the Allison out of my 2005 chevy ext cab 4x4 Dmax (LLY) 2500 truck to put a Suncoast IV and converter in it and it is HUGE and very heavy . if you put a heavy tune 100 hp or more you will fry the alli,and I did at 25000 miles .with the Suncoast that won't be a problem again ,rear tires are the problem .

LOL... Suncoast makes a good product..... Everytime I hear someone talk about them, It makes me think about Joe Webb and his death, and how horrible it had to be for his friend to have to drag him back on the boat... Last I heard they still think it was a heart attack as they came up....

I know the LLY is sort of a head headed stepchild and has always been significantly lowwer on power than the LB7 or LBZ... But some of the guys have got the EFI Live programs kickin for it... Lots of fun, but your always chasing a weak component!

[IRA51]

when the LLY came out there wasn't a lot of programeing for it ,now there is and there guys in California McRat for one tht have broke into the 11's on #2 alone,from what I hear . the LB7 was a good motor ,but the design had major flaws such as fuel injectors under the valve covers so when they failed your crank case filled with fule and trashed the engine .the Lbz is the best of the bunch and if i'm still alive and kickin in 2009 when they change to the new frame I'll get one .though I don't like the Idea of a particulate trap that needs cleaning and with a tune it may be a problem. and yes EfI live is the hot ticket . at this time I belive the LLY can hold it's own power wise wit a LB7 . the LLY and the LBZ are very close in design the LBZ has less compression and a slightly beefer block . my LLY has been flawless so far and I drive it like I stole it ,I can tow a 10000 lb toy hauler up sunset point on the way to flagstaff in 115 degree heat and not over heat . It has been the best truck I have ever owned .

[dmaxh1]

Yes my name is andrew I do the duramax conversions and we put the cummins with the allison in the hummer or dmax we are by word of mouth or conversions start at 18,900 and that is for the base dmax lbz six speed allison transfercase front and rear drive shaft radiator and intercooler wiring harnesses ecm tcm power mods are extra you can contact us at 651 434 5760 we are doing a 1999 h1 4man ht converting it to a real slant back with alpa interior and dmax contact us with any q thanks

[bmrtire]

Johnathan Goodwin of H-Line did mine. 500 HP, 22 mpg on hwy. I am having hydrogen installed as of right now.

[Lean Machine]

Originally Posted by bmrtire

Johnathan Goodwin of H-Line did mine. 500 HP, 22 mpg on hwy. I am having hydrogen installed as of right now.

How much for the install (excluding the hydrogen install)

[ramonfernandez]

Originally Posted by Lean Machine

How much for the install (excluding the hydrogen install)

Sorry, I wasn't able to scan if you've commented. How much does it cost again? I would like to compare prices. Thanks!

[RCKSTR]

No one has any additional info on the swap? Im going to start a thread for it step by step when I start, the wiring is the only thing holding me back. If you talk to predator,mash, or any other place that does it, they say it will make you want to find jesus. If you talk to a guy that has actually done it, they say its not that bad. I dont see how they could pull off a conversion in 4 days if it is really that bad. Im posotive they are just trying to scare us so we dont try it ourselves and pay them rediculous amounts of money for them to do it.

[BigKofJustice]

Originally Posted by OrangeCrush

I think I'm gonna have to go with the several weeks...lol.

I'm sure they could do it but I'd count on a few weeks at least.

Mark

Predator does a lot of conversions. They've even got a contract with the government to upgrade the border patrol H1's to Duramax engines from the 6.5 so they have a high turnover rate and lots of experience.

Could they do it within a week? Call up and ask, I imagine a base exchange is custom shafts [already made and in stock,] custom harness, and custom crossmembers and body lift ready to go.

[OrangeCrush]

Gonna cleanup this thread. I'm guilty as others are. Deleting all impertinent content....

Anyone have any helpful answers to the OP's original question, then respond... the rest of us will keep our opinion's to ourselves.

Mark