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We are using the new ATT turbo and the GM8, we will dyno both the same day. I am not so much worried about turbo lag do in part to the use of nitrous and the way we run the truck on the dyno, I won't have them even start tracking HP untill the truck is at about 50 mph and the converter is locked...

Yeah I am not worried about the cooling system either. My truck that made 303 was my daily driver and still is. We will detune the truck as soon as the goal is met to make the drugs work best for fuel economy and towing. The electric fans are going to be used for just the dyno run, after we will...

Here is what this build has as of now. Heath PCM, GM-8 turbo w/ Turbo-Master, 4" exh. w/ twin out pipes, 2.5" x-pipe, (pyro, boost, trans, fuel pressure, rear diff temp) gauges, Heath HO-Inj., PMD-Isolator, removed vacuum pump, Penninsular upper intake, #7 fuel resistor, aFe stage 2 intake, hood...

Lay them on me, I have a few weeks to get this done.

That is with drugs, I would love more than anyone to see it done with just diesel but as we all know untill a better pump and injectors are created I don't think it is going to happen.

Well the good thing is it is not my money and I am just doing the install of all my old parts on a new truck with a brand new Diesel Depot motor. Why do you ask?

I ship out to OCS in Dec. right now I am planning a wedding and working on another truck that I sold all my parts to. We are going to try and hit the 350 wrhp mark some time in the next few weeks. I still have my truck for now but I think I am going to sell it to my brother. Other than that I am...

Oh, its Peninsulars marine engine with mechanical pump. I know what you are talking about now. I used to work with Matt a lot. I am more concerned with automotive motors, I helped build the Heath land speed truck with twin turbos so I know what you are talking about.

I know Bill Heath better than most and know for a fact that he puts countless hours into his programs to make them as good as they get.

How did PEN get his flywheel HP numbers? Did he dyno just the motor or what? I was using a very well built motor when I worked at Heath Diesel along with nitrous, propane, water/meth, and every other bolt on mod available and put down 303 wrhp which would put me at about 375 engine HP at the...

So I am working on a friends 6.5 with a goal of 350 wrhp. So far the highest I have ever been able to achieve is 303 wrhp and 590 ft. lbs. What I would like to know is if any of you think this is possible and if you have any suggestions that I might not have thought about. I will talk more about...

I will check them out. Thanks

Just wondering if anyone here has found any good oil cooler upgrade kits? I am looking for new lines and cooler if needed. Like most people with a 6.5 I am getting a little tired of having oil leaks out of those stupid factory lines.

Let me know how your system works out, I am very interested in your design.

The truck has two custom built larger turbos to reduce back pressure along with a twin stage water injection system w/o meth, custom program to allow higher shift points, very high rear gear ratio, much improved aerodynamics, special salt flat high speed tires, no weight reduction, AirDog fuel...

Best I have got is 27 but average about 17 to 19 mpg.

Heath GL4 prom, turbo-master, 4" turbo back, x-pipe, HO-Injectors, PMD-Isolator, aFe Stage 2 intake w/ S&B cone filter, twin 16" electric fans, TDC offset -1.94, one off propane injection system I helped design for the 6.5, Snow/Heath water methanol injection, ZEX diesel nitrous system...

Engine 6.2 block w/ 6.5 heads and diamond pre-cups balanced rotating assembly Moroso hard block water jacked filler ARP head studs Ceramic coated pistons w/ anti-friction side coating Turbo GM-4 factory turbo w/ Turbo-Master boost controller Tranny 4L80E w/ PML deep pan and...

I would recommend using a set of ARP head studs and 6.5 head gaskets. They are a little bigger so use the thinner ones to keep compression normal. Also I would recommend using 6.5L heads, smaller valves for less chance of cracking due to extra turbo pressure. I run the same combo in my truck and...