1965 Mustang Project Fastback, A-code, Factory 4bbl, 4-spd, Twilight Turquoise on 2040-cars

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Submit your questions for Autoblog Podcast #310 LIVE!

We record Autoblog Podcast #310 tonight, and you can drop us your questions and comments regarding the rest of the week's news via our Q&A module below. Subscribe to the Autoblog Podcast in iTunes if you haven't already done so, and if you want to take it all in live, tune in to our UStream (audio only) channel at 10:00 PM Eastern tonight.
Discussion Topics for Autoblog Podcast Episode #310
Buick GN and GNX will return

Ken Block's 1965 Ford Mustang Hoonicorn RTR and CR Supercars Villain are retro done right

Gymkhana king Ken Block has had a pretty simple car history in his trademark videos, starting out with Subaru Impreza rally cars before moving into Ford Focus racers for the past four installments. His next video, though, Gymkhana Seven, kind of goes back in time.
Rather than the cutting-edge rally racers of past videos, Block will pilot a heavily modified 1965 Ford Mustang, called the Hoonicorn. How heavily modified is it? Well, Block's Hooligan Racing Division, ASD Motorsports and Vaughn Gittin Jr.'s RTR, spent two years working on it, ditching the standard engine and rear-wheel-drive layout and replacing it with a 410-cubic-inch Roush Yates V8. Yes, that's a NASCAR engine, and it produces 845 horsepower.
A NASCAR-powered Mustang would be news in itself, but it's the other powertrain changes made by Block and Co. that really makes headlines. Power is channeled through a one-off Sadev transmission and all-wheel-drive system, meaning that Block has basically married a NASCAR stock car with a WRC racer. ASD also developed the customized suspension, tubular chassis and roll cage. The wide Mustang body is the work of RTR and Block's own Hoonigan Racing Division, while the 18-inch fifteen52 wheels are shod in Pirelli Trofeo R tires that use a specialized compound exclusive to Block.

The tricky business of octane, power, and MPG

Given tepid green-car sales numbers this year, consumers in the US aren't making the transition away from internal combustion engines too quickly. Regulations are still mandating cleaner emissions, though. In addition to downsizing and turbocharging, there's growing consideration about moving to higher-octane fuel to improve overall efficiency. In a new report, engineers at FCA, Ford and General Motors Powertrain are showing that it could work, too. The major advantage to higher-octane fuel is that it supports higher compression ratios. That in turn can lead to more power from burning the same amount of gas. "Higher ethanol content is one available option for increasing the octane ratings of gasoline and would provide additional engine efficiency benefits for part and full load operation," the researchers write in the study's abstract. The authors even think it could be possible to update some modern vehicles' engine calibration to be optimized for the better gas. While the benefits are there, we still have a long way to go before higher-octane fuel becomes a national standard. According to Green Car Congress, 87 percent of the gas sold in the US is regular grade 87-octane. Meanwhile, premium 91-93 octane makes up just 10 percent. The various grades of fuel illuminate even more annoyances with the current system. For example, Ford generally recommends 93-octane for EcoBoost engines, and the power outputs that the company publishes are based on using it. However according to Green Car Reports, such premium gas is very difficult to find in some regions of the US, especially along the West Coast. The powertrains still run on lesser grades but with lower power output. The researchers' discussion of possibly increasing ethanol in gas also comes during a heated debate on the substance. The current administration is pushing for less of the corn-based fuel in the coming years. Although, several presidential hopefuls might be favor of reversing that course.