First off, I love your tech article in the S-10 Special Sept. '04 issue. It was a huge help. I'm curious, though, are there any other performance parts for the four-cylinder motor? I haven't been able to find any and I'm running out of ideas. I'm highly considering turbocharging it, but would my motor be able to handle the boost? Also, any idea how much power I can send through my automatic tranny without it blowing up on me? Some say it can't be done, so I really want to prove them wrong. Any suggestions would be greatly welcomed.
Eric Hodes, via e-mail
Turbocharging is a great performance solution, though we're not aware of any commercially available turbo kits. We are aware that the folks at Gale Banks Engineering have a 2.2L S-10 mule they're turbocharging, but there's no word on whether it'll make it into the company's catalog. However, John Espino at GBE said to give him a call [(626) 969-9600, ex. 4300] and he'll be happy to help you get hooked up and haulin'.
Central Port-Injection Woes
In the Letters column by Kevin Wilson, there was an article about CPI fuel injectors saying that someone made an error in the way CPI worked. In the reply, he talks about why a CPI system is not a good candidate for enhanced power, then he talks about changes to a CPI Tahoe. What changes were made? My friend and I have '97 S-10s with 4.3L V-6s that we want to be hot rods. We're thinking about boring them out 0.030 inch over, installing a new cam and 1.6-inch rockers, and cleaning up the heads (port and polish). But all this will not work if the trucks are going to run lean. If you could send me a copy of the story on the CPI Tahoe, it will help.
John via e-mail
All we did with the Tahoe you're referring to was install an aftermarket intake and exhaust. We didn't reprogram the computer on that unit. We also stroked a CPI 350 and reprogrammed the computer and it worked OK. So the fuel system has a little reserve to create some additional power. We think the mods you're thinking about with a CPU edit would most likely do you fine. But give Dave Darge a call at Powertrain Electronic at (805) 466-5252 or check out the Web site (www.powertrain.net) for a custom edit.
In your Aug. '03 issue, you had an S-10 Special that included a buildup on a 4.3L making 300 hp. I read this article and found it very informative. Something came to my mind a few days ago that wasn't in the article. I understand the whole idea that the 4.3L is basically three-fourths of a 350. The 4.3L in stock trim displaces 262 ci. If the 350 can be stroked to 383, would a 4.3L be able to be stroked to (if I did my math right) a 287? If there isn't a kit to your knowledge, would you be able to mill off the other two cylinders of a 383 crank? I enjoy your magazine every month; please keep up the good work.
Joshua F. Firestone, via e-mail
Thanks for the compliment. Creating a crankshaft isn't that simple. Fortunately, you don't have to. Speed-O-Motive [(626) 869-0270] makes a crankshaft and stroker kit for that very application but with 272 cid instead of your larger figure. The kit comes with a fully prepped cast 4.3L stroker crank, 5140 forged 6-inch I-beam rods, ARP wave loc bolts, full-floating Keith Black hypereutectic flat-top pistons [0.040 and 0.060 available], Speed Pro Moly ring set, Clevite tri-metal main and rod bearings, 168-tooth auto-trans flexplate, and 6.18-inch-diameter harmonic damper, and it's balanced to within half a gram. Give 'em a call.
Sex Appeal Is Not Immoral
I'm 68 years of age and I used to give your magazines to my grandson after I read them. Well, I don't anymore, due to your bikini-clad young ladies on the cover. The three on the cover of Sept. '04 issue - is this considered conservative attire? And just because there are magazines on the newsstands such as Playboy, doesn't mean you should put these in Sport Truck magazine. And maybe you should edit for morality.
John Zimmer, via e-mail
First off, thanks for supporting our magazine; we appreciate your point of view and don't blame you for not passing the magazine to your grandson. But consider this: Our core reader is 18 to 35 years old. We're not sure how old your grandson is, but if you remember what excited you when you were the age of our core readers, I think you'll agree we're not as risqu as you think. As a matter of fact, we were watching some footage of the Bob Hope USO tours in Korea and Vietnam. In one of the clips, he commented on one of the female entertainers, scantily clad as showgirls usually are. He said, as he spun her around, showing her to the admiring troops, "I just wanted to remind you of what you're fighting for," to which he got thunderous applause. As you can guess from our demographic age, we have a lot of military readers, a lot stationed overseas in places such as Iraq, Afghanistan, and other hot spots. We view our covers and show coverage as a reminder of what they're fighting for.