Car Feature: Silver Sleeper


*photos by: Grant Cox Photography

Cadillac was once the standard of the world; a brand of prestige, elegance and excellence. Offering its buyers the latest technology, the most powerful engines and luxury appointments that set the brand to the highlest level of regard, Cadillac became a marque that everybody coveted. During the ’70s, ’80s, ’90s, and the initial half of the previous decade, Cadillac had found its way in a rut and at the back of the pack in terms of luxurious automotive refinement.

The brand has come a long way since the days of pleather and velour upholstery, and the V-series Caddies of the modern era are not only helping Cadillac regain market share, but its reputation and rightful place on the luxury totem pole. When you have buyers cross-shopping AMG Mercs and M-series BMWs with Cadillacs, you know you’re doing something right.

 “It’s a sleeper; it looks subtle and the sound is incredible.” -SW

One of those buyers was Sriyantha Weerasurin, or “SW” for short. Being the founder and owner of Elite Motorsports in Austin, Texas, a high-end muscle, luxury and super car dealership, SW can pretty much drive whatever he wants. Being a huge car fan himself; owning everything from pro-touring 2nd-gen Trans Ams, late-model Vipers, Supras and other examples of modern and vintage iron that range in power from 800-1600 hp to the tires, this daily-driven CTS-V remains his favorite.

Why? Because as SW simply puts it, “It’s a sleeper; it looks subtle and the sound is incredible.” In order to find out how a silver CTS-V can take precedence over other such remarkable high-horsespower vehicles in his collection, we’ll have to dig deeper – and so we shall.


Picking up the ‘V brand new back in November 2012 from the local Cadillac dealership, SW almost immediately went in search of more power from his daily-driven ride. After all, how can a 556 hp Caddy suffice when you’re used to something with 1600 hp, right? So he enlisted the help of 21st Century Muscle Cars (21MC) for a serious boost in performance, pun intended.

GM Engineering really did an excellent job with the LSA powerplant, maybe that’s why so many car builders leave the bottom end untouched – even with increased boost pressure? Such is the case with SW’s car.

Under the hood is an LSA with a completely stock bottom end. The factory original block, crank, pistons, rings, connecting rods, bearings, et al., are all accounted for.  The OEM cam has been removed, however, and a custom boost-oriented bumpstick spec’d by 21MC has went in its place. The cylinder heads were pulled, ported, polished, stuffed with 2.165 intake/1.59 exhaust valves with a 3-angle valve job and then reinstalled.

The OEM TVS 1900 blower was removed and given a makeover; 21MC ported the housing, the lid and snout, while an LPE LS9 solid blower isolator coupling, 8-rib belt, 21MC spacer were all added to the recipe. The stock heat exchanger was ditched in favor of a front-mount, high capacity unit with an “Ice Box” reservoir upgrade. The stock boost pressure was turned up to 15.5-psi. while engine spark is provided via the stock coil packs, MSD wires and NGK plugs.


Breathing air into the 6.2L mill is a custom air box and intake tube, that feeds, cool dense oxygen into a 102mm throttle body. The air/fuel ratio is balanced out by a set of FAST 65-lb injectors and believe it or not, the stock fuel pump. Tuning is handled by John Page at 21st Century Musclecars. The spent fumes exit the engine through a pair of stainless Kooks 2-inch, long-tube headers, high-flow cats and the stock catback.

Underneath the car, the chassis/subframe have been left completely alone as well as most of the suspension itself. The only changes were made to the springs, shocks and struts, with KW Suspension coil-over components going in at all four corners, lowering the car while improving handling capabilities.SILVERSLEEPER-6 copy

Thanks to the debadged body and HRE P47SC wheels measuring in at 21×9-inches in the front and 21×11-inches out back, SW’s Cadillac looks much more sinister than a standard CTS-V, aiding front end downforce along the way. Pirelli PZero rubber covers the HRE wheels and keep the power gripping the pavement, while a front splitter gives a hint of the car’s capabilities that lie within.

The interior is completely stock-appearing and quite plush as all Cadillacs are. The black leather/alacantara combination upholstery really enhances the the quality of the cabin, making occupants feel that they’re in a car that costs twice as much.

By now you’re probably wondering how much power emits from the boosted LS, and that magic number would be 733 horsepower 649 lb-ft. of twist to the rear HREs. That number translates to 10.30 at 135.7 mph in the quarter-mile – or roughly quick enough to get SW to work through the week until he straps into one of his uber-horsepower missiles.



  • CAR: 2013 CTS-V
  • OWNER: Sriyantha Weerasurin
  • PISTONS: Stock, LSA
  • CAMSHAFT: 21CMC; custom-grind
  • CYLINDER HEADS: LSA; Stage 2 ported and polished, 2.165 intake/1.59 exhaust valves
  • INDUCTION: Custom 4.5-inch airbox, 102mm throttle body
  • POWER ADDER: Stock TVS 1900 blower; ported, with a ported lid and snout, LPE LS9 solid blower isolator coupling, 8-rib belt, 21MC spacer
  • INTERCOOLER:  custom; front-mount heat exchanger
  • BOOST: 15.5-lbs.
  • IGNITION: Stock coil packs, MSD plug wires
  • EXHAUST: Kooks long-tube headers, high-flow catalytic converters, stock catback
  • FUEL DELIVERY: FAST 85-lb. injectors, stock pump
  • OILING: Stock
  • TUNING: John Page, 21st Century Musclecars
  • TRANSMISSION: Stock, 6L90E
  • CONVERTER: Stock
  • REAREND: Stock
  • SUSPENSION: KW adjustable coilovers at all four corners
  • BRAKES: stock
  • WHEELS: HRE P47SC 21×9 (front), 21×11 (rear)
  • TIRES: Pirelli PZero 255/30/21 (front), 295/25/21 (rear)
  • HP/TQ.: 733/649
  • BEST 1/4-MILE ET: 10.30 at 135.7
  • BEST 60-FT.: 1.62

Share this post


Add yours
  1. Ma Premer 29 April, 2021 at 22:44 Reply

    I believe this site holds some very fantastic information for everyone :D. “The ground that a good man treads is hallowed.” by Johann von Goethe.

  2. JasonMiz 12 May, 2021 at 18:39 Reply

    [url=]female viagra order[/url] [url=]united states viagra[/url] [url=]pharmacy discount coupons[/url] [url=]online pharmacy[/url] [url=]online sildenafil[/url] [url=]tadalafil citrate[/url] [url=]fluoxetine 80 mg daily[/url] [url=]zoloft 2 50mg[/url] [url=]canadian pharmacy brand viagra[/url] [url=]viagra 100 mg tablet buy online[/url]

  3. SueMiz 12 May, 2021 at 21:06 Reply

    [url=]lisinopril cost us[/url] [url=]cost of daily cialis[/url] [url=]viagra 100mg india price[/url] [url=]viagra united states[/url] [url=]sildenafil otc canada[/url] [url=]711 viagra pills[/url] [url=]ciprofloxacin 500 mg tablets cost[/url] [url=]order sildenafil uk[/url] [url=]how to get doxycycline prescription[/url] [url=]where can i get viagra online[/url]

  4. EyeMiz 12 May, 2021 at 22:16 Reply

    [url=]where to get generic viagra for women[/url] [url=]valtrex pill[/url] [url=]buy metformin nz[/url] [url=]how can i get sildenafil[/url] [url=]ivermectin 0.5[/url] [url=]prozac australia prescription[/url] [url=]propranolol 10 mg tablet brand name[/url] [url=]buy zithromax 250mg[/url] [url=]viagra 30 mg[/url] [url=]cost of viagra in us[/url]

  5. MiaMiz 12 May, 2021 at 23:35 Reply

    [url=]online viagra prescription usa[/url] [url=]canadian medicine viagra[/url] [url=]doxycycline 50 mg buy uk[/url] [url=]can you buy viagra[/url] [url=]how to purchase viagra pills[/url]

  6. MiaMiz 13 May, 2021 at 00:39 Reply

    [url=]order viagra online canadian pharmacy[/url] [url=]can i buy cialis in usa[/url] [url=]buy viagra usa online[/url] [url=]cialis order online usa[/url] [url=]order viagra online cheap[/url]

  7. JoeMiz 13 May, 2021 at 01:02 Reply

    [url=]tretinoin prescription cost[/url] [url=]inderal 40[/url] [url=]sildenafil citrate 100mg[/url] [url=]viagra discount[/url] [url=]ciprofloxacin 500 mg[/url] [url=]glucophage in usa[/url]

  8. JackMiz 13 May, 2021 at 01:53 Reply

    [url=]viagra price online[/url] [url=]how to buy tadalafil[/url] [url=]can i buy glucophage online[/url] [url=]viagra medicine online purchase[/url] [url=]buy fildena 50 mg[/url] [url=]where can i buy sildenafil tablets[/url] [url=]online pharmacy reddit[/url] [url=]cialis otc canada[/url]

  9. NickMiz 13 May, 2021 at 02:29 Reply

    [url=]canadian pharmacy provigil[/url] [url=]viagra usa prescription[/url] [url=]viagra for female price[/url] [url=]propecia prescription canada[/url] [url=]albuterol tablets for sale uk[/url] [url=]sildenafil online canada[/url] [url=]sildenafil soft tabs generic[/url] [url=]worldwide pharmacy online[/url]

  10. MiaMiz 13 May, 2021 at 04:32 Reply

    [url=]cost of cialis 10 mg[/url] [url=]best tadalafil brand[/url] [url=]buy doxycycline 200 mg[/url] [url=]generic cialis fast delivery[/url] [url=]where to buy propecia in usa[/url]

  11. JackMiz 13 May, 2021 at 04:36 Reply

    [url=]how to order viagra online safely[/url] [url=]buy generic viagra online with paypal[/url] [url=]can i buy viagra over the counter[/url]

  12. AnnaMiz 13 May, 2021 at 04:57 Reply

    [url=]cheap viagra canada[/url] [url=]where to buy cialis online uk[/url] [url=]ciprofloxacin tablet price[/url] [url=]on line viagra[/url] [url=]canadian pharmacy viagra 50 mg[/url] [url=]buy ivermectin nz[/url]

  13. SamMiz 13 May, 2021 at 05:58 Reply

    [url=]cialis capsule[/url] [url=]cheapest tadalafil[/url] [url=]glucophage 850 uk[/url] [url=]viagra usa 100mg[/url]

  14. JackMiz 13 May, 2021 at 06:46 Reply

    [url=]propranolol online order[/url] [url=]levitra pills price in india[/url] [url=]how to get viagra over the counter[/url]

  15. JudyMiz 13 May, 2021 at 07:12 Reply

    [url=]female viagra online purchase in india[/url] [url=]femail viagra[/url] [url=]generic sildenafil 50 mg[/url] [url=]cheap generic viagra canada[/url] [url=]buy viagra online india[/url] [url=]cialis uk over the counter[/url] [url=]fildena 150 online[/url] [url=]ventolin 100 mg[/url] [url=]cheap genuine cialis[/url] [url=]buy real viagra online[/url]

  16. SamMiz 13 May, 2021 at 08:43 Reply

    [url=]economy pharmacy[/url] [url=]cheap viagra generic canada[/url] [url=]buy kamagra jelly sydney[/url] [url=]sildenafil coupon 100 mg[/url] [url=]viagra by mail[/url]

  17. SamMiz 13 May, 2021 at 09:20 Reply

    [url=]all med pharmacy[/url] [url=]prozac online pharmacy uk[/url] [url=]cheap generic sildenafil citrate[/url] [url=]cost of viagra 2017[/url] [url=]cialis online canada pharmacy[/url]

  18. NickMiz 13 May, 2021 at 10:45 Reply

    [url=]generic viagra usa[/url] [url=]viagra 100mg online india[/url] [url=]online pharmacy 365[/url] [url=]price of tadalafil 20mg[/url] [url=]legitimate online pharmacy[/url] [url=]sildenafil canada generic[/url] [url=]fildena 100 free shipping[/url] [url=]viagra for sale online uk[/url]

  19. AnnaMiz 13 May, 2021 at 12:25 Reply

    [url=]buy viagra canada[/url] [url=]sildenafil over the counter united states[/url] [url=]sildenafil 100mg discount[/url] [url=]price viagra uk[/url] [url=]female viagra cream[/url] [url=]cheap sildenafil 20 mg[/url] [url=]eu pharmacy viagra[/url]

  20. IvyMiz 13 May, 2021 at 12:26 Reply

    [url=]how to get valtrex online[/url] [url=]female viagra in india[/url] [url=]indian pharmacies safe[/url] [url=]legal online pharmacy[/url] [url=]can i buy modafinil[/url] [url=]best india tadalafil online[/url] [url=]buy zoloft online[/url] [url=]how to buy viagra tablets[/url] [url=]buy fluoxetine 10mg uk[/url] [url=]viagra 100mg online in india[/url]

  21. JoeMiz 13 May, 2021 at 13:51 Reply

    [url=]propranolol 25 mg[/url] [url=]cialis without a rx[/url] [url=]over counter viagra[/url] [url=]best online cialis canada[/url] [url=]canadian pharmacy viagra 50 mg[/url] [url=]ivermectin generic cream[/url] [url=]female viagra pills online india[/url]

  22. aplikacje android 10 September, 2021 at 02:54 Reply

    I wanted to check up and allow you to know how great I valued discovering your site today. I’d consider it a honor to do things at my workplace and be able to make real use of the tips provided on your website and also participate in visitors’ opinions like this. Should a position of guest writer become offered at your end, i highly recommend you let me know. firmonet

Post a new comment