1994 Callaway Twin Turbo ZR-1

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For Sale By Owner

1994 Callaway Twin Turbo ZR-1

The LT-5 DOHC 4 valve was powerful and pleasing in its King of the Hill home in the C4 chassis Corvette in 1994. Twin Turbocharging was the correct method for producing prodigious power because of the rpm potential of the engine and its high rpm breathing ability.

However, the approach was never seriously considered because there was physically no room, and very few people could handle the power responsibly. The client who commissioned the TTZR-1 was that guy, and with the right budget, the fabrication costs were not the stumbling block. The project resulted in a ZR-1 with a ZR-1 body relatively standard in appearance and very tastefully done that was constructed on a cost-is-no-object basis. The turbosystem placement, plumbing, and cleverness has resulted in a masterpiece of fabrication (by Vincent DiScipio) invisible until the body is opened.

To support the engine’s 780 bhp, all areas of the car were addressed: custom steel half shafts, half roll bar, custom fitted 5-point harness with modified seats, special security, coil-over suspension package, Brembo brake package. Special engine equipment includes: 8.5:1 CR twin Garrett T04B turbos with twin air-air intercoolers, high capacity injectors, recalibrated PCM, Carillo connecting rods, Cosworth pistons, Callaway intake cams, blueprinted and balanced ZF gearbox, (Transmission blueprinted by ZF) 18″ RW magnesium wheels (10″ front, 11″ rear) with Michelin Pilot SX (285/35 front, 325/30 rear), 3.92:1 rear gears fitted March 1996, single mass flywheel with Centerforce clutch, concealed injector kill switch, new completely blueprinted rear end… As you can tell, a custom car constructors bill of fare.

Excellent condition, always stored, 11,000 original miles.



To contact the owner, please email info@callawaycars.com or call Callaway Cars at (860) 434-9002. Our staff will connect seller and buyer as a courtesy. Callaway Cars is not involved in the transaction of any of the listed automobiles.

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The Callaway vehicle listed above as “For Sale by Owner” is displayed as part of a service to Callaway owners to promote vehicle sales. Callaway Cars Inc. has no confirmed knowledge or of the representation of the condition or of the suitability of this vehicle, unless specifically stated. This vehicle is not physically located at any Callaway Cars facility; however, it is confirmed to be authentic as Callaway-built. The vehicle has not been seen or otherwise inspected by Callaway Cars Inc. in conjunction with this listing.

This is a listing service only. Inquiries for this vehicle should be addressed to info@callawaycars.com. Reasonable and serious inquiries will be forwarded to the seller. All transactions will be between the seller and the inquiring parties. Callaway Cars Inc. does not become involved with the transaction beyond introduction of seller and the inquiring party/buyer.