LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

Those were the words photographer John Jackson humorously blurted out while at GoodFellows Classic Cars in Phoenix to shoot this gorgeous yet brawny ’66 Chevelle. It wasn’t because there was an underage girl behind the wheel, but due to the front license plate that reads JAIL B8. The story of the plate goes back to when Tina’s husband, AJ Schwichtenberg, owner of GoodFellows, had a ’62 bubbletop with that California plate. As AJ tells it, “I wanted to get that same plate for the Chevelle I was building for my wife, Tina, but the Arizona DMV wasn’t having it.” AJ kept the original and put it on the front of the Chevelle, which got Jackson’s attention as Tina was moving the car in position for the photo shoot.

“Hey, there goes Jailbait Tina!”


AJ has built and owned dozens of vintage Chevelles and found this one a few years back that a buddy of his was less than fond of, so he was selling it for a mere $1,500. Before it got in AJ’s hands, the prior shop deemed it unfixable — the rear quarters were welded in with a 1.-inch difference in height on each side of the car and the driprails were cut off the wrong way. Being the owner of a hot rod shop had its perks – one being having the talented crew who can pretty much fix anything related to vintage cars; having so much experience with Chevelles made it even easier.

LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

GoodFellows’ shop foreman Victor Hebert ditched the old quarters and stitched in a fresh set of sheetmetal from Original Parts Group. From gap to gap, Hebert prepped the body, massaged the wheel openings, and tubbed the rear inner fenders in preparation for massive rubber. He got the body back on track prior to dousing the classic in PPG Cortez Silver. Royal Plating in Tucson freshened up the stock bumpers, which now look better than new, and in GoodFellows fashion, Hebert tucked ’em to the body because they just look better that way.

LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

Hebert dropped the whole enchilada on an Art Morrison GT Sport chassis complete with their triangulated four-bar rear suspension arrangement. Strange coilover shocks and 250-pound springs take up residence out back, while Art Morrison Sport IFS control arms, modified C6 steering knuckles, Strange coilover shocks, 450-pound springs, and power rack-and-pinion steering reside up front.

AJ staggard the Budnik SKO wheels old school like and went with 18s up front and big ol’ 20s out back, then wrapped the quartet in Pirelli rubber. Although the wheels are modern in size, they possess enough vintage styling to preserve the Chevelle’s ’60s aura. Not vintage are the massive Wilwood disc brakes on all four corners, giving the Chevelle the ultimate in modern stopping power. A hydro-assisted Wilwood master ensures minimal effort for a smooth and predictable pedal.

LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

AJ has been a big fan of the LSA 376ci engine for years and informed us inventory on these mills is just about depleted, but he was able to rathole one away for his wife’s special build. The mostly stock bullet carries all the standard GM goodness with a stock bore and stroke, yet AJ upped the performance with a Texas Speed Stage 2 LS3-B cam. The American Billet LSA Two Tone Diamond Cut accessory drive kit features a black finish with silver accents, which comply with the custom GoodFellows valve covers and Eddie Motorsports hood hinges. GoodFellows’ Conor Jackson, who runs the fab shop, built and plumbed the custom cold air intake up to the cowl for a healthy dose of fresh atmosphere, which AJ claims is “worth 20 hp right there.” The spent greenhouse makes quick exit via the custom GoodFellows headers, 3-inch stainless custom exhaust, and Spintech mufflers. AJ’s efforts reward the Chevelle with 725 hp and 700 lb-ft of torque.

LS engined 376 ci 725bhp 1966 Chevrolet Chevelle

A GM 4L75E-HT automatic four-speed trans accepts the LSA’s fury and is backed by a 2,800-stall converter. A TAD 3-inch aluminum driveshaft dispenses power to a Strange 9-inch rearend loaded with a limited-slip posi, 4.56:1 gears, and 35-spline axles.

AJ formed a fairly modern-styled cabin that confidently navigates the vintage ’60s vibe. The black leather door panels provide a sporty impression while upholding the Chevelle’s classic roots. That’s a stock dash populated with Dakota Digital gauges. Although the Bluetooth head unit looks factory, the twin set of 300-watt amps wired to a quad arrangement of 6x9 speakers ensure it’s not. The black double-loop carpet is repro, and the Vintage Air HVAC unit blows through the factory vents. The stock seat was covered in leather with blue accent and custom stitching. AJ preferred the stock bench seat so “Tina can snug up next to me when I take the wheel,” AJ playfully confirms. The American Billet column shifter, Clayton Machine Works interior door handles, window cranks, and pedals certainly add some performance panache.

AJ and Tina are excited to point out that the car recently won the Builder’s Choice award at the 2022 Goodguys Spring Nationals in nearby Scottsdale and are currently looking forward to taking the Chevelle on several cruises this summer. A trip to Nashville and Reno’s Hot August Nights are circled in the dog-eared Thomas Guide so far. “We just like cruising with some good friends,” AJ says. “To us, that’s what this hobby is all about.”

Without giving away Tina’s age, we confess that she’s a few years beyond jailbait in every state in the union, but with her heavy right foot and tenancy to flex the LSA’s muscle, she’s on the fast track to hot water with local law enforcement.

So, if you see a Cortez Silver ’66 Chevelle cruising the streets of Phoenix there’s a good chance that’s “Jailbait Tina” behind the wheel–a gal known to leave a lasting impression and a haze of tire smoke.


  • OWNER: AJ & Tina Schwichtenberg, Phoenix, Arizona
  • VEHICLE: 1966 Chevrolet Chevelle


  • DISPLACEMENT: 376 ci
  • BORE: 4.065 inches
  • STROKE: 3.622 inches
  • CYLINDER HEADS: Aluminum L92-style port
  • ROTATING ASSEMBLY: Forged crankshaft, powdered metal rods, hypereutectic aluminum pistons
  • CAMSHAFT: Texas Speed Stage 2 LS3-B 0.641/0.649 lift and 235/235 duration at 0.050
  • INDUCTION: 1.9L Eaton TVS supercharger
  • EXHAUST: GoodFellows custom headers, 3-inch stainless exhaust, 18-inch Spintech mufflers
  • ANCILLARIES: American Billet accessory drive system, PRC radiator, custom GoodFellows valve covers, GoodFellows custom air intake, Eddie Motorsports hood hinges, Odyssey batteries
  • OUTPUT: 725 hp and 700 lb-ft


  • TORQUE CONVERTER: GM 2,800 stall
  • REAR AXLE: Strange 9-inch rearend, limited-slip posi, 4.56 gears, Strange 35-spline axles

Chassis & Brakes

  • CHASSIS: Art Morrison GT Sport chassis
  • FRONT SUSPENSION: Art Morrison Sport IFS control arms, C-6 spindles, Strange coilover shocks, 450-pound springs, adjustable spline sway bar, rack-and-pinion steering
  • REAR SUSPENSION: Art Morrison triangulated four-bar, strange coilover shocks, 250-pound springs
  • BRAKES: Wilwood 14-inch rotors, six-piston calipers front and rear, Wilwood master cylinder, Wilwood proportion valve

Wheels & Tires

  • WHEELS: Budnik SKO (18x10 front, 20x12 rear)
  • TIRES: Pirelli 275/35R18 front, 325/35R20 rear


  • UPHOLSTERY: Double loop black carpet, custom leather upholstery
  • SEATS: Stock bench, custom black leather and blue stitched cover
  • STEERING: ididit steering column, stock SS steering wheel
  • SHIFTER: American Billet Modified C10 column shifter
  • DASH: Stock, leather dashpad
  • DOOR HANDLES: Clayton Machine Works
  • PEDALS: Clayton Machine Works
  • INSTRUMENTATION: Dakota Digital
  • HVAC: Vintage Air


  • BODYWORK AND PAINT: Victor Hebert of GoodFellows
  • PAINT: PPG Cortez Silver
  • HOOD: AMD cowl
  • MIRRORS: Billet Rides (St. Petersburg, FL)
  • GRILLE: Stock
  • BUMPERS: Stock, trimmed and tucked
  • PLATING: Royal Plating (Tucson, AZ)
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