In the last installment of the Retro 5.0 dyno testing, we made 829 horsepower and 673 lb-ft of torque, thanks to our Vortech Si-trim supercharger. That number was on Boostane Race E85, and we were being conservative, since the threat of splitting the stock block was ever-present in the dyno room. While a broken block wouldn’t have been the end of the world for the project, it would have prevented us from conducting the next test in sequence — comparing those numbers to pump 93 treated with Boostane Professional.
Boostane Race E85
First, let’s recap the details of the E85 pulls, since they happened first, chronologically. The Retro 5.0 engine is a 302 cubic-inch small-block Ford, running forged 2618 flat-top pistons, with a stock crankshaft in a stock ’93 Thunderbird engine block. A Trick Flow Twisted Wedge 11R170 Top End Kit (TFS1 cam, 170cc 11R heads, aluminum 1.6 roller rockers) caps off the short-block, with a Holley SysteMax II intake manifold. All of that runs through a set of JBA 1-5/8-inch-primary, unequal-length shorty headers. A Holley Terminator X controls the combination.
After tuning the combination ourselves at 11psi of boost, the real tuner — Tommy Keeter of KPE Racing — took over several days later and wrung out the combo, spinning the engine up to 7,000 rpm and making 17psi out of the Vortech Si-Trim supercharger. A quick note here, is that everything on the blower was exactly as it would come in a ’87-’93 Mustang kit, including the 3.33-inch blower pulley. On Boostane’s Race E85, fresh out of the drum, we made 829 horsepower an 673 lb-ft of torque, at 20 degrees of timing at peak boost. (Fun note, Keeter said he didn’t really have to touch the tuneup for those numbers, he just had far more confidence to spin everything harder. I’ll take that as a compliment.)
Our test engine for this is our Vortech-supercharged small-block Ford dubbed Retro 5.0. Stock displacement, stock block, and stock crank, meant we were a little worried about surviving the test at all.
Boostane Professional Additive With 93-Octane Pump Gas
With our E85 numbers cemented, Keeter drained the fuel system of corn juice and replaced it with some of Wichita Falls’ finest premium pump gas (no jokes here, the Sunoco 93-Octane E10 gas really has proven its mettle on this engine dyno many times over). We went to Boostane’s website to open up the mixing calculator and found that to elevate our five-gallon jug of 93 to 104 octane, we’d need 32.75…
Click Here to Read the Full Original Article at DragzineDragzine…