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Entries for this giveaway have closed — drawing September 30, 2026. We'll post the winner here. Browse live giveaways →

Win a Supercharged LS-Swapped 1983 Chevrolet C10 Square Body

Own Boss Supply Co's ten-day side drawing puts up a supercharged LS-swapped 1983 Chevy C10 square body carrying a $20,000 ARV in the rules — driver-grade restomod money with its own September 30 draw, separate from the big OB46 truck package.

Last updated · Independent listing — GiveawayCars tracks this sweepstakes but is not the sponsor.

Est. market value

$20,000

Entry price was

See rules

Entries closed

11:59:59 p.m. ET on September 20, 2026

Drawing

September 30, 2026

What you're looking at

A 1983 Chevrolet C10 with a supercharged LS swap under the hood — the square-body recipe that has quietly become the default build in American truck culture. The 1973–1987 GM pickup is the last body style you can still buy cheap, fix with hand tools, and make genuinely fast without fabricating anything from scratch, which is exactly why the LS swap found it.

The C10 badge decodes plainly: C means two-wheel drive, 10 means half-ton. Worth saying out loud because the campaign artwork for this weekend carries a "Chevy K30 Weekend" title, and a K30 would be a four-wheel-drive one-ton — a completely different truck with a completely different price. The binding official rules name the prize four separate times as a 1983 Chevrolet C10, and no operator page ever calls the prize itself a K30. The rules govern, and the rules say C10.

Beyond that, the spec sheet is genuinely thin. The rules name the year, the make and the model and stop. Displacement, blower make, boost, output, transmission, gearing, color and odometer reading are all unpublished. You are entering on the strength of "supercharged LS square body" and a number.

Why it matters

That number tells you more than the marketing does. A $20,000 ARV places this truck squarely in driver territory — the $16,000–$28,000 band where clean, sorted, swapped square-bodies actually change hands — and nowhere near the pro-built blown C10s that clear six figures at Mecum. That is not a knock. A $20,000 supercharged square body is a truck you drive to work, park outside without a panic attack, and improve on weekends. The six-figure ones are trailered.

It also makes this the more interesting of the two drawings running right now. The headline OB46 package is a $190,200 pile of Ford diesel and Caterpillar iron aimed at someone running a crew. This one is a toy, and a usable one, on a much shorter clock.

The fine print worth knowing

Two giveaways, two different deadlines. This is not the OB46 package and it does not share its calendar. Entries for the C10 opened at 12:00:01 a.m. ET on September 10, 2026 and close at 11:59:59 p.m. ET on September 20, 2026, with the drawing "on or about September 30, 2026." The Ford/Caterpillar package runs to September 27 and draws October 7. Miss the 20th and you are only in the big one.

The entry math, spelled out. The rules set the base rate at one entry per dollar: "For each dollar ($1) spent (excluding s&h or tax) via approved credit card transaction, the Participant will receive one (1) Sweepstakes entry," with announced bonus multipliers from 5X to 100X on top. The Quick Entry tiers show their work — the $75 Silver is marked "100X+1000" and pays 8,500 entries, which is 75 × 100 plus a flat 1,000. Gold is $125 for 17,500, Platinum $200 for 35,000. There is a 40,000-entry ceiling per participant across all methods.

The free route is unusually close to parity. A mailed 3×5 card earns 75 entries, and — this is the part that matters — the multipliers apply to mail entries too, by handwriting "MULTIPLE-5X" through "MULTIPLE-100X" on the card during an announced window. A maxed mail-in card is therefore 7,500 entries against the 8,500 a $75 purchase buys. One entry per envelope, no bulk shipments, postmarked between September 10 and September 21 and received by September 26 — note the mail window runs a day past the paid close, because physical mail has to be in hand before the drum spins.

Eligibility is narrower than the ads suggest. Forty-seven states plus D.C. and Canada, but Hawaii, Alaska and Michigan are out, and so are Puerto Rico, the U.S. Virgin Islands, Guam and overseas military addresses. Alabama and Nebraska residents must be 19. And the rules require that you "possess a valid driver license as of the date of entry" — an unusual condition that disqualifies an otherwise eligible entrant who happens not to hold a license.

Conditions on the winner. Seven days to return the required documentation after written notification or the prize is forfeited, a signed affidavit, and an arbitration clause limiting disputes to individual claims in Toledo, Ohio. The sponsor also "reserves the right...to substitute any prize...with another prize of equal or greater value," which is boilerplate everywhere but worth a glance when one specific truck is the entire pitch.

What you pay for after you win. The winner covers the associated costs — title, registration, insurance and taxes. The $500 travel allowance folded into the $20,500 maximum prize value is the sponsor's contribution to collecting it, and on a truck valued at $20,000 the federal and state tax bill will be the larger number of the two.

Spec Sheet

Year / Make / Model1983 Chevrolet C10
EngineSupercharged LS V8 (swap) — displacement and blower unpublished
DrivetrainRWD

The Mod List

  • +LS V8 engine swap — displacement unpublished
  • +Supercharged — blower make and boost level unpublished

Why It's Special

Not rare in the collector sense — GM built square-bodies by the million from 1973 to 1987, and 1983 sits in the final stretch of that run. What's gotten scarce is a clean one. Twenty years of these trucks being used as actual trucks thinned the survivor pool, and the supercharged-LS square body has since become one of the most-copied recipes in American truck building. The value here is in the combination, not the VIN.

Our value estimate

$20,000

The official rules set the Approximate Retail Value at $20,000 for the truck itself, inside a $20,500 maximum total prize value that also carries a $500 travel allowance — so $20,000 is the car-only number used here, with the travel money broken out into extras. That ARV is the anchor, and it sits comfortably in the real market: driver-quality LS-swapped square bodies trade roughly $16,000–$28,000, with the bulk of the range landing around $20,000–$24,000, while clean and lightly restored examples run $25,000–$50,000. Pro-built supercharged square bodies live somewhere else entirely — an '83 with a 418ci LS3 and a Whipple blower brought $228,250 at Mecum — so the $20,000 figure is itself the clearest signal that this is a driver-grade truck rather than a show build, and it should be read that way. Mileage, engine displacement, blower make and output are all unpublished, and every one of them would move this number: a fresh, big-boost build would sit well above the ARV, a tired one below it. Directly comparable dated sales of supercharged '83 C10s in this price band are thin, so the estimate leans on the operator's own ARV plus the driver-grade market band rather than on three matched auction results.

Editorial estimate based on recent comparable sales — not an appraisal.

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Common questions

Can I still enter the 1983 Chevrolet C10 giveaway?

No — entries have closed (11:59:59 p.m. ET on September 20, 2026). The drawing is on or about September 30, 2026; the winner will be posted here. Browse the live giveaways board for sweepstakes that are open right now.

How much is the 1983 Chevrolet C10 worth?

GiveawayCars estimates the 1983 Chevrolet C10 at about $20,000. The official rules set the Approximate Retail Value at $20,000 for the truck itself, inside a $20,500 maximum total prize value that also carries a $500 travel allowance — so $20,000 is the car-only number used here, with the travel money…

Who ran the 1983 Chevrolet C10 giveaway?

It was run by Own Boss Supply Co.. GiveawayCars is an independent directory and is not the sponsor.

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