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July 2010 Postal Route

Diesel Supercar, Diesel Nova, & More!

Jul 1, 2010
4.5L Diesel Supercar
As I was leafing through my April '10 issue of Diesel Power and stumbled across the diesel-electric hybrid supercar article, I immediately recognized it as the Factory Five GTM supercar. I've been in lust with this car for as long as I can remember, and I've been imagining it with a diesel engine for nearly as long. In fact, back in late 2008 I blogged ( about building one with a 4.5L Duramax if money and parts availability were no object. It would admittedly be a bit more low-tech than the microturbine-powered version, but I think it would still be pretty fun to drive!
Ryan J. Geyer
Santa Barbara, California
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Wait till you see the 4.5L Duramax-powered supercar project one of our readers is working on in next month's issue!
Novamax 1.0
I just read Jason Sands' editorial ("The Novamax") in your April '10 issue. I literally have a '70 Nova in my garage with an LB7 Duramax and a two-wheel-drive Allison 1000 in it. I bought it all as a project about six months ago. If I finish it, will you put it in the magazine?
Eric Ratliff
Kodak, Tennessee
We'll put it in the magazine, but only if you finish yours before Jason finishes his.
Forgotten Recipe
What happened? I liked your Power Recipes budget buildup series but noticed that you forgot some of the originals: the 6.9L and 7.3L IDI Ford engines. You covered the early Dodge, and now the 6.2L and 6.5L GMs. Also, what about the budget builds for the '071/2-and-newer 6.7L Cummins? In your Power Stroke section you had an article just for the 6.4L trucks, but when you covered the Dodges, you included a little info for the 6.7L with the '03 to '07 5.9L engines. In my opinion, there needed to be a complete section just for the 6.7L Cummins.
Kelley Williams
Decatur, Texas
We've got an IDI Ford diesel truck in-house that we write about almost every issue. We've upgraded it with an ATS Diesel turbo and are looking for other suitable upgrades to show you in future issues. What else would you like to see?
As for the 6.7L Cummins budget buildups, we grouped the 6.7L in with the 5.9L engines because we felt most enthusiasts were modifying them using the 5.9L parts. But that doesn't mean we're done covering those engines. Stay tuned.
Every Back Issue-On DVD?
I am aware that some of your old articles are available via your website ( But can I purchase a DVD of all the back issues you've ever published? I have purchased this type of thing from Fine Woodworking magazine for $150 (for 15 years' worth of back issues). Surely someone planning to spend thousands of dollars on a vehicle could afford more. So tell the bosses they'll make money by offering this to your readers.
Keith Gordon
Via email
At this point, our back issues are only available in print version at But in the future, we may offer such a DVD. Perhaps we could offer a new DVD volume every five years and equip it with a search tool to navigate the material. Rest assured, we'll be looking into it!
6.2L Dual Exhaust
I just read the May '10 issue and was pleased to see info on the GM 6.2L. But if the engine is stock, it doesn't need a $450, 4-inch exhaust. Hooker Headers makes a mandrel-bent 21/4-inch dual exhaust system that bolts right up to the stock exhaust manifolds. I know because I just did it to my '83 Chevy C-10. This kit was less than $200 from, and for my truck the part number was HOK-16622HKR. Just add your choice of mufflers. I'm writing this hoping to help my fellow 6.2L and 6.5L owners save $200, which would cover the cost of an EGT gauge or whatever.
David Lee
North Logan, Utah
Never Quite Finished
My husband reads your magazine religiously, and I couldn't help but notice in the last issue you had a budget-built Power Stroke achieving 422 hp. My husband has a '94 Dodge Ram that he has spent considerably less on (he claims $500, but I would say maybe more around $1,200) and achieved the same power rating during a dyno test. He has always talked about submitting his story to you, but like any guy who is passionate about his truck, it's like a piece of artwork and never a finished project.
Bridget Siler
Boyceville, Wisconsin
We love seeing our readers' diesels and hearing their stories. Please, send them in-even if they're not quite finished.
Broken Bolt Repair
The Dec. 2009 issue (page 117) has a picture of a block with a narrative about two broken head bolts and the block and heads were trashed. I hope the block was beyond repair for other damage beside the broken bolts. We remove broken bolts from all types of engines from 6mm bolts in aluminum Porsche blocks to 64mm head bolts in Colt-Pielstick diesels.
Kenith D. Guthrie
CBG, LLC Maintenance Services
High-Speed Tires
I spent a lot of time on your April '10 tire guide. I found it very useful, as my tires are nearing the end of their life. But I found something missing. In today's world of super-powered diesel trucks, I would have liked to have seen the speed rating of each tire. I realize mud tires are probably not going to have such a rating, but many of the all-terrain tires you tested must have one.
Kelly Blakeman
Via email
Keep in mind that a tire's speed rating may vary by its size. Here are the speed ratings (letters and speed) of the tires we tested:
Toyo Open Country M/T 265/70R17: P, or 93 mph
Toyo Open Country H/T (Tuff Duty) 285/75R16: Q, or 99 mph
Nitto Trail Grappler M/T 35x12.50R17: Q, or 99 mph
Pit Bull Rocker XOR-LT 35x12.50R17: N, or 87 mph
BFGoodrich All-Terrain T/A KO 285/75R16: Q, or 99 mph
Mickey Thompson Baja MTZ 305/70R16: Q, or 99 mph
2010 Diesel Power Challenge
I have been searching every website and forum on the Internet to find one simple thing: Where in the heck is the darn Diesel Power Challenge this year? I can find everything else about it, down to the amount of fuel being used there, but I cannot find out how to go watch it.
Dave Wells
Annandale, Virginia
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The Diesel Power Challenge is not open to spectators, but you can get your fill of the action at In next month's issue we will profile the 16 competitors in this year's event.
Diesel Power- For The Next Decade
I just picked up an Apple iPad and downloaded the Popular Science magazine and Wall Street Journal applications. I am planning on getting two more iPads as soon as possible. This iPad is fantastic! I sure hope Diesel Power has plans for this mobile media device. Yes, I know I can access it through the web (which is very much appreciated) but an app on the iPad would be very, very elegant. Hope you are considering this. It is the wave of the future. Thanks for a great magazine!
Stanford K. Eastman
Sacramento, California
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You can download an app to read Diesel Power at
To all our readers, we thank you for your comments and compliments. Keep those emails and letters coming. Write to: Diesel Power, 831 S. Douglas St., El Segundo, CA 90245, or email us at


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