SK Kustoms Goes 9s

SyTyRegistry — Wed, 16 Oct 2024 15:46:44 +0000

On October 4, 2024, at Great Lakes Dragway in Wisconsin, Sean Krupa, owner of SK Kustoms in Chicago, IL launched his 1993 GMC Typhoon into the record books once again by breaking his previous recorded time of being the quickest single-turbo V6 AWD Typhoon in the world!

From Sean’s previous run last April of a 9.87 @ 139mph, he decided to push his Typhoon a little more this time around. After 3 runs, his fastest was a 9.39 @ 144mph this past weekend making it his new personal best as well as the fastest AWD V6 Typhoon currently in the world. Recently Sean did some dyno tuning which the truck pulled just shy of 800hp while fighting wheel slip on the barrels. It is estimated the truck is around 880whp.

The setup includes a 4.8L stroker Bowtie V6 with Brodix heads and a custom cam. A Precision GEN2 8080 Sportman turbo spools up the power which is tuned via a Holley EFI ECU. To handle the power this truck puts down, the transmission was upgraded to a 4L80-E which is still connected to the stock Borg Warner 4472 transfer case. Custom powdercoated 17″ CCW Classics wheels wrapped in 275/40 and 315/35 drag radials keeps Sean’s Typhoon stuck to the pavement.

Sean has been working over the years to progressively get this Typhoon to it’s current power level. When he’s not under the hood of his truck, he offers tuning services and his expertise in SyTys under his business name, SK Kustoms. As impressive as a 9.39 is, Sean mentions that the truck still has more in it and will be pushing it further with at least another 10psi of boost. His goals? An 8 second time slip. Another track date is planned for the near future and we’re amped to see Sean gather that 8.99 or better time!

11/8/24 UPDATE!

Sean has once again broken his own record with a time of 9.26@149MPH. While it wasnt the 8.99 he was aiming for, we still congratulate him for another insanely fast run!

9.26 146MPH Worlds Fastest V6 AWD Typhoon Record Reset…AGAIN!!! We fought traction with this 50° day but made a solid pass after numerous attempts!! Unfortunately broke the rear differential the last attempt for an 8! I can’t even be upset, 115k miles on that bad boy all stock diff!! We will fix and come back out swinging again next year!! As always thank you again for the support!!! Now time to prep this Beast for the make over this winter!

The post SK Kustoms Goes 9s first appeared on International SyTy Registry.

Growing up SyTy

SyTyRegistry — Thu, 31 Aug 2017 19:15:13 +0000

For most car and truck enthusiasts, speed and power are 2 of the top-tier must-have items in their ideal vehicle. Of course, the Syclone and Typhoon came packed with both speed and power from the factory being able to produce 13-second timeslips and go zero to sixty in 4.2 seconds. With a 300hp 4.3 V6 powerplant under the hood, the Syclone and Typhoon still reign as some of the quickest production trucks ever produced. But for some, stock isn’t fast enough and the desire to push boundaries comes into play. For SyTys owners, shaving off the first second on your quarter mile time comes relatively cheap and easy….everything after becomes a delicate balance of proper modification combinations and your checkbook.

Back in July, we featured the accomplishment of Sean Krupa and his 10-second quarter-mile time slip with his GMC Typhoon. Having grown up within the SyTy Community, for Sean this has been a lifelong goal and achievement to be proud of. We had the chance to catch up with Mr. Krupa to talk about his truck, goals, and his new business in helping other SyTy owners.

ISTR: Sean, we remember what seems like so long ago of you as a young child walking around the parking lot of the SyTy Nationals surrounded by hundreds of trucks and owners. How long have you actually been around SyTy and owned your truck?

SK: I’ve been around SyTy since I was born in 93 since my dad was the original owner. I grew up to be passionate into cars just like my dad and fell in love with the Typhoon. I’d always try and help my dad wrench on it when I was little and even went to the 3rd Annual SyTy Nationals in 2000 held in Kansas City. He saw the passion and always told him I wanted it when I got my license. Well, as the day came when I got my license I was handed the keys to my dream vehicle. I made a promise to my parents that I’d stay focused in my life and not do drugs. I’ve kept that promise ever since as I’m now 24.

ISTR: What where your goals when you got your truck and have they changed over the years?

SK: When I got the Typhoon, it had the basic reliability mods, polished engine bay, chrome ZR1s, and cowl hood. So basically it was a great starting point. I haven’t really touched the exterior much as it was always taken care of and daily driven even through Chicago winters. The first summer owning it I spent most of that time cleaning up the frame and detailing everywhere I could. Of course like every other car guy, I wanted to go faster! I wanted to get into tuning and pushed the stock turbo into a 12.9 quarter mile and was actually very happy with that power level. But, I still had the itch and went with a bigger turbo and pushed that into the low 12s. Every winter I always did some modifications, and like everything else I was noticing the weak links. I then had the trans built, added a converter and still wanted to go faster. Then came tearing half the engine apart while still in the truck to do vortec heads, custom cam and an even larger turbo (72mm). I finally got my 10 sec pass and proud to say it’s a record for stock bottom end. So yes, I guess my goals did change over the years!

ISTR: Tell us a story or a memorable moment youve had with owning your truck.

SK: Hard to give a good story as I’ve had many, but I’d say the most important memory was my 10.71 pass on the stock 100k mile bottom end engine. Many don’t realize the struggle to get into the 10s. Sure you can buy all the go-fast parts, but you have to have all your ducks in a row. Getting into that power level, I began breaking parts like the transfer case viscous clutch locking up which took out the CV shafts and front diff. I broke the output shaft on the built 700r4 too. So yes, it was a challenge. Took 100+ datalogs to get it just right and learn what the truck liked. Playing with suspension settings at the track. With 4 or 5 low 11 second passes, I got my 10 second time slip. All the hard work and of course money paid off!

ISTR: You’re truck is stout and has been a proven build that has gone 10s now. You also could daily drive it and it’s fully street legal. We know you’ve had some small setbacks but overall, you achieved a very respected goal in the SyTy community. How hard was that to achieve and what advice can you offer others who are trying to break into the 10 second club?

SK: Since owning the Ty, if a problem ever came up I always tried to get it back on the road in a short amount of time. I drive it a lot compared to most and built it so I could drive it reliably. Like I said above, it was a challenge when getting into this power level to still keep my sanity as their were times I had enough. At the end it was worth it to know others were just as happy as me and can show what these trucks can do when you spend the time and dedication to bring a truck into this level.

Advise I would give is, if you’re planning on getting into the 11s or even 10s, please do your research on what the other fast guys are doing. Yes, get the good go-fast parts, but make sure you spend the time making sure your tune is 110% before you go spend time and money at the track. Ask others what they suggest as that’s what I did. I’m always here to help!

ISTR: What are your future plans or goals for the truck now that you have gone 10’s, are you going to try for 9’s or is your focus going to go into other areas of the truck?

SK: My goals since I’ve gone 10’s is to keep it on the road. The “Typhoon 2.0 Build” was the build to get the truck “finished” the way I dreamed of and do things the right way meaning – built engine and trans with the supporting tuning equipment. The body is in good shape considering it was a Chicago daily for 16 years. I have 2 doors I want to get painted to swap out due to some rust. Underneath is really clean so I’m happy with that. The engine bay is the way I want it. Since I went to the track with the new 2.0 setup earlier this year and ran 10.49, I know their is more in the truck. I learned what it liked and what I need to do for next time. I do plan on racing again SOON. As far as goin 9s, it has the parts to do so it’s just a matter of…DO I TRY? I mainly want to now focus on the body work and get it the way I want it even though I’m proud of what it currently looks like. Also want to add a rollcage since I’m at this power level just for piece of mind.

ISTR: You now offer services under SK Kustoms. Tell us more about what you are doing and the services you offer.

SK: SK Kustoms, well since my dad used to have a side business (RK Kustom) dealing with ATR and Kenne Bell and also selling custom embroidered carpet mats and got that reputation in the SyTy community, I want to follow in his foot steps. I’m dedicated to these trucks and have basically done it all. Since guys have seen my progress over the years, I want to help others get their truck to a level they dream of as some don’t have the time or motivation. Right now, I’m doing a full suspension build and have done a tune on another Typhoon. I’m starting off with projects that I can get done quickly such as tune-ups, suspension work, tuning, go-fast parts as I work full time and do this on the side while getting it done in a timely manner for the customer. It would be great to turn this into a full time gig, but for now I’m helping the local midwest guys.

SK KUSTOMS TYPHOON DETAILS:

Engine & Trans Modifications:

Forged DSS Pistons
Eagle Rods
4 Bolt mains
Nitrated Stock Crank
Half Filled Block
Ported Brodix -8 Heads
Custom Cam
Headers
Precision 72mm Turbo with fender exit
3.5″ Exhaust
120lb Injectors
Holley Dominator ECU
E85 fuel
Stage 2 4L80e with Circle D Billet Single Disk 3,200 Converter.

Interior:

LED Cluster
Dome lights
Racing Seats
Grant 3 Spoke Steering wheel
Holley 3.5″ Gauge screen
Pillar Gauges – Boost/Trans/Fuel Pressure
Bravada Outside Temp/Compass display in the upper Console.

Suspension:

JSM Front Viking Double Adjustable Coilovers
JSM 4 Link with Viking Coilovers
LS1 Camaro Front and Rear Polished Calipers (polished by SK Kustoms)

The post Growing up SyTy first appeared on International SyTy Registry.

Sean Krupa | International SyTy Registry

SK Kustoms Goes 9s

Growing up SyTy

SK KUSTOMS TYPHOON DETAILS: