var _gaq = _gaq || []; _gaq.push(['_setAccount', 'UA-17264978-8']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + ''; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })();
Corvette Racing
Duntov Motor Co

Duntov's new book chronicles the history of both the Original and Continuation Grand Sports




Duntov Classics, LLC

13906-C Denton Drive
Farmers Branch, TX 75234

Toll Free Order Line
(888) 581-3838

Phone (972) 243-3838

Fax (972) 243-3828

M-F 9am - 5pm
Sat - by appt

Duntov Facebook

follow us on Facebook

Duntov Employment

Sportscar Vintage Racing

Duntov Motor Company
Return to full list

Protofab GT1 Trans Am Group 10 Corvette

The Protofab TA GT1 car was built by the Duntov team in 1981 to the then current Trans-Am rules. Eppie Wietzes had just won the Trans Am title in a similar car. The car was initially bodied as a 1982 Corvette and won every race it finished until the 1983 SCCA Runoffs where it finished 3rd, but first in class! By then fully tube framed cars were legal in Trans Am and GT1. In 1986 it was rebodied as a C4 Corvette and placed 7th in the Dallas Trans Am in 1988, but again first among Corvettes. Following the 1988 season, Gary Pratt (currently of Pratt and Miller) with Protofab Engineering sent the team a spare body from their successful 1988 IMSA campaign. The car first ran with the Protofab body in December 1993 when it lapped the field at the last SCCA race of the season at Texas World Speedway. Its last race was in October 2004 at Texas Motor Speedway where it retired with a broken differential while leading.

Grand Sport

In 2016 Duntov put the car through a total frame up restoration, including engine, transmission, differential, brakes ect. Everything. The body was taken down to its fiberglass and carbon fiber primer, repaired and repainted. Its first test session was at COTA in November 2016 where it showed potential but was not yet ready to race. Its first actual race will be the SVRA season opener in March 2017. We believe it will be a winner.

Grand Sport

ENGINE - Bow Tie Iron Block 366


Initial Build Date

Last Overhaul Date

Time Since Overhaul











First Race Date

Last Race Date

Cage Description





Fire System




As required


Time to Race Ready - 75 Days

Price, Race Ready - $95,000

Leasing and Financing available to qualified applicants

Interesting trades considered


Duntov Motor Company is the exclusive licensee for the continued production of the authentic original Corvette Grand Sport.  Duntov Motor Company is the exclusive licensee for the manufacturing and distribution of the updated street version of this famous car. We service what we sell. We also restore and service 1963-1982 Corvette race, street and performance cars using original and replacement parts including front and rear suspension, brake calipers, brake rotors, brake pads, both J-56 and stock brake caliper pistons, and Corvette stainless steel parking brake parts. We offer the finest original U.S. built Corvette spindles and GM stub axles, along with remanufactured Corvette differentials for both street and race cars. We build both new and rebuilt Corvette trailing arm assemblies for 1965-1982 Corvettes, and offer Corvette street and racing springs and both steel and composite leaf springs in a wide selection of spring rates. Check out our Corvette parts section for shocks, sway bars, upper and lower A-arms, Corvette ball joints, tie rod ends, pitman arms, idler arms, shocks and U-joints.

Site created and maintained by 1 Ton Design
Copyright © 2010-2021 Duntov Motor Company. All Rights Reserved.