Indian equity benchmarks are likely to make a positive start on Wednesday tracking gains across other Asian markets, a day after official data showed India's GDP grew 8.4 percent in the September quarter. At 8:55 am, Nifty futures trading on Singapore Exchange -- an early indicator of the Nifty50 index -- were up 86.5 points or half a percent at 17,150, suggesting a strong opening ahead on Dalal Street.