Build #5 Naturally Aspirated Delivered

1972 CHEVY CHEVELLE

LS-swapped '72 Chevelle keeping it period-correct from the outside — Blueprint 427 ProSeries underneath, Hooker Black Heart headers, TREMEC TKX 5-speed, Classic Instruments cluster faithful to the original gauge layout.

Pensacola, FL · Mad Labs Performance HQ
1972 Chevy Chevelle
595
Peak RWHP
565
Peak RWTQ
6100
Peak RPM

Engine Dyno Sheet

HP & Torque vs RPM

Power and Torque Corrected to Standard Conditions
HP Torque (ft-lb)
Blueprint Engines · PSLS42730CTF · Measured at the flywheel · SAE Corrected
Published with the owner's permission. Dyno data shown with customer consent.

The Build

Engine
Engine Blueprint Engines LS 427 ProSeries — 625 HP Base Dressed, fuel-injected crate
Displacement 427 ci (7.0L)
Architecture GM-LS compatible aluminum block + heads
Camshaft Blueprint hydraulic roller (factory spec)
Heads CNC-ported aluminum (Blueprint ProSeries spec)
Induction Multi-port EFI
Headers Hooker Black Heart long-tubes
Tune HP Tuners — Mad Labs in-house
Warranty Blueprint 30 mo / 50,000 mi
Drivetrain
Transmission TREMEC TKX 5-speed manual
Driveshaft Custom
Suspension & Brakes
Front Suspension OEM (period-correct ride)
Rear Suspension OEM (period-correct ride)
Brakes 4-wheel disc conversion
Interior & Comfort
Gauges Classic Instruments — period-correct cluster
Displacement
7.0L V8 (427 ci)
Induction
Naturally Aspirated EFI
Fuel
Pump gas
Transmission
TREMEC TKX 5-spd

The Story

Jim's 1972 Chevelle is the bridge between the muscle-car era and the modern reliability era — vintage from across the parking lot, contemporary the moment you turn the key. It's the third car in his lineup to run the Blueprint Engines LS 427 ProSeries crate motor, the same 595 HP / 565 ft-lb fuel-injected 7-liter that lives in his C10 and 1968 Camaro.

Exhaust pulls clean through a set of Hooker Black Heart long-tube headers — coated, ceramic, and tuned for the LS bark without crossing into raspy territory. Behind that, a TREMEC TKX 5-speed manual — the third TKX in Jim's collection. He shifts the same gearbox in three different cars now, which says everything about how it feels.

The chassis stays factory front and rear. No coilovers, no four-link, no mini-tubs. Suspension is OEM Chevelle, on purpose — Jim wanted this one to ride like he remembered, not like a track car. The only chassis update is a 4-wheel disc brake conversion so 595 modern horsepower has modern stopping to match. Inside, a Classic Instruments cluster handles the gauges with a period-correct face that looks like it could have rolled out of Flint in '72.

Three of Jim's cars share the same engine, three share the same transmission, and every one of them tells a different story.

Built for Jim S. · Pensacola, FL

Photos

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