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David Geisler Jr. Goes 7s with 2-Valve ‘99-‘04 Mustang

It takes quite a bit of determination, money, and time, to get a New Edge 2-valve SN95 Mustang into the 7s, but that’s exactly what David Geisler Jr. did while testing at Orlando Speed World Dragway in Florida on March 26, 2020.

Geisler had been working on his ’99 model for the past few years, and the project kept evolving into something bigger as his desire to go quicker and faster accelerated as well.

“There have been some more racecar-type 2-valves in the sevens as far as I know, and David wanted to be one of those guys—but with a street car,” explained his friend and fabricator, Kurtis Forsberg of KMFF Racing. “He bends over backwards helping me with my car whenever I need it, so I give him the same treatment.”

With upwards of 400 (or more) passes on it, the 2-valve engine was built ages ago and is still going strong. Using a stock stroke 4.6L iron block and Kellogg Cobra crankshaft, it was topped with a set of Trick Flow cylinder heads from Jordan Martin’s Modular Head Shop along with a Pusher intake. Inside, Manley H-beam rods and pistons run through the Otto cycle with air compressed courtesy of a 91mm BorgWarner turbocharger modified by Forced Inductions and purchased from Synergy Tuning. Forsberg recently reworked the entire turbo setup and freshened the engine with a new set of rings and bearings.

The Brake Man brakes have been installed to quiet down the galloping Mustang, and tons of suspension odds and ends have come from both TRZ Motorsports and UPR Products. The one and only Cal Hartline of Hartline Performance hooked Geisler up with other items as needed.


Working through roadblocks with the setup for the past year thanks to help from fellow KMFF crew buddies including Wayne Stewart, Jon Pavia, Van Canada, and Ron Longo, Forsberg and Geisler finally made a breakthrough on the dyno at Redline Tuning in early 2020.

Geisler’s Turbo 400 transmission from FTI had been previously paired with a 9-inch converter also from FTI, but testing earlier this season showed that his car wasn’t happy with it.

“It went fast, but annihilated the converter, so I pulled my 9.5-inch FTI out of my Mustang, changed the stator, and put it into David’s,” Forsberg explained of the generous swap.

Eager to get back out there, they headed out for another private test day at OSW in late March. Geisler took the wheel of his Electric Green machine, and with Forsberg in charge of tuning the Holley Dominator EFI system, they picked up a time slip showing a quarter-mile time of 7.980 at 169.83 mph. The number makes them arguably the first 2-valve 4.6L ‘99-‘04 Mustang to run 7s as a street car.

Is it a microrecord? Sure, but it’s still something to be proud of, especially at a time where there’s very little racing happening at all.

“I’m really happy for David. He works really hard and is passionate. I’m just glad to be a part of it and to have a friend as crazy as I am,” laughed Forsberg, who has had a blast helping Geisler chip away at what’s possible.

Despite what haters may say since the guys posted a video on Facebook of it being loaded into a trailer, the fourth-generation Ford is still very much a street car. A full interior, including back seat, is accented only by a subtle set of necessary Kirkey racing seats. Power windows, power door locks, and just about everything else is still present… except air conditioning.

“I do all the fabrication on that car, and David is not getting A/C – there’s no room!” laughed Forsberg, who suggested his friend simply stick his hand out the window while he’s driving to direct the air in on hot Florida days. “He [David] really does drive that car everywhere he can, though, and takes it on cruises and to Cars and Coffee.” Both Geisler and Forsberg are regular QA1 True Street competitors at the NMRA Spring Break Shootout events in Florida as well.

With a new short block already in the works for Geisler, the guys are definitely curious to see how far they can push down into the sevens but will max out the current combination first since there’s still plenty left in it according to the data. And, once racing gets rolling again from the Coronavirus shutdowns, the pair plans to hit up as many local Street Car Shootout and No Time events as they can possibly find.


Ainsley Jacobs
Ainsley Jacobs
P.TEN Marketing's Ainsley Jacobs is a freelance motorsports marketing professional with extensive experience in marketing and communications, website development, social media management, photography, journalism, and more.
http://www.PTENmarketing.com
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