THE SLEEPER THAT OUTSMARTED GM EPA & INSURERS IN ONE MOVE

Описание: Imagine a 1970 Chevy Nova so fast and sneaky that insurance companies refused to insure it… while it crushed 427 big-block legends on the street. This is the Yenko Deuce — Chevy’s secret COPO LT-1 sleeper that almost disappeared from history.

Only 175 examples were ever built. In this never-before-seen deep dive we reveal: • The hidden COPO loophole that delivered 360 hp in a 2,950 lb package • Power-to-weight math that made it quicker than heavier Yenko Super Novas • 2026 authenticity checklist: how to spot real vs. the forgery epidemic (replicas now outnumber originals 3:1) • Latest auction sales hitting $230K+ and why this is the smartest 1970 muscle car buy today
Timestamps:

0:00 – The Insurance Slayer Nova That Shocked GM
1:45 – How the LT-1 350 Became a Street Assassin
4:30 – The Math Chevy Hoped You’d Never Calculate
7:20 – Don Yenko: The Dealer Who Outsmarted Detroit
10:00 – 2026 Guide: Real Yenko Deuce vs Fakes (Authenticity Checklist)
12:45 – COPO 9010 & 9737 Production Secrets
14:30 – Why This Is the Smartest 1970 Muscle Car Investment Today
16:45 – Final Thoughts & Your Questions

Comment “DEUCE” below if you want a full buyer’s guide in Part 2!
Which would you rather own — Yenko Deuce LT-1 or a 427 Yenko Camaro? Vote 👇

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THIS WASN’T A SCANDAL IT WAS THE SMARTEST PERFORMANCE HACK OF THE ENTIRE MUSCLE CAR ERA


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innovations:

The Yenko Deuce used the standard 1970 Chevrolet LT‑1 350 small‑block specification as installed via COPO, essentially the same as Z/28 and Corvette LT‑1s of that year.
Core LT‑1 specs (as used in Deuce)

Displacement: 350 cubic inches (5.7 L) small‑block V8.

Rated output in the Nova/Yenko Deuce: 360 hp (gross) with solid‑lifter camshaft.

Compression ratio: 11.0:1 high‑compression performance setup.

Induction: High‑rise aluminum dual‑plane intake with a Holley 4‑barrel carburetor (around 780–800 cfm).

Valve train: Mechanical (solid) lifters, high‑lift performance cam, 2.02 in intake and 1.60 in exhaust valves in high‑flow heads.

Construction details: 4‑bolt‑main block, forged pistons, heavy‑duty rotating assembly and bottom end suitable for sustained high‑rpm use.

In Yenko Deuce form, that LT‑1 was backed by a 4‑speed manual and a 12‑bolt Positraction rear (often 4.11:1), making the car a very high‑revving, small‑block “junior supercar.”

Mechanically, the LT‑1 in a Yenko Deuce Nova is the same basic 350 LT‑1 small‑block that Chevrolet used in the 1970 Corvette and Z/28; the differences are in application, rating, and supporting hardware rather than a special “Yenko‑only” LT‑1 design.
Engine itself

Internal specs
Chevrolet rated the Corvette LT‑1 at 370 hp and the Camaro/Nova LT‑1 at 360 hp, but the engines themselves are effectively the same

Chassis and installation context
In the Corvette, the LT‑1 sits in a heavier, independent‑rear‑suspension sports car with factory Corvette cooling, exhaust, and gauges; in the Yenko Deuce it is installed in a lighter, leaf‑spring Nova body via COPO, backed typically by a close‑ratio 4‑speed and a 12‑bolt Positraction axle with aggressive gearing.

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