Factory Five Racing GTM Supercar, Assembly Manual

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www.factoryfive.com 508-291-3443
This chapter deals with the donor parts needed in addition to the parts that we included with our kit.
Many people choose to use parts from a single Corvette donor. If you are not going to use a donor car
but choose to acquire parts separately, this section may still be useful. The complete list of parts
required to build the FFR GTM is included in the Appendix of this manual. For specifications on the
Corvette donor by year, see the Appendix.
The fifth generation Corvette (the C5) was introduced by GM in 1997 and produced until 2004. Any
C5 Corvette (standard or Z06) can be used as the donor for the FFR GTM.
The transmission you will use for the GTM is the Porsche 911 G50 series gearbox. These
transmissions can be found in 5 or 6 speeds and with various gear ratios. For example, the Porsche
993 used a 6 speed G50. Factory Five supplies an adapter kit for 1990-1998 G50-03/05, G50-20 and
G50-52 Transaxles. For other styles, years and brands see the Appendix
Donor Part Selection Tips
Where to look
 Junkyards – If they do not have one on the lot, usually they go to auctions weekly and can get what
you want.
 Newspaper classifieds.

The Internet.
 Search “Factory GTM” on Ebay. There are companies that sell “GTM Corvette parts Kits” without
engines for $5,000.
Below is a list that contains salvage dealer websites we have found to be useful. Many of the dealers
listed often have multiple C5 Corvettes. For additional dealers, see the Appendix.
Dealer Location Phone Website
Corvette Shop and Supplies, Inc. Tampa, FL (813) 872-6907 corvetteshoponline.com
Kim Motor Company Petersburg, VA (804) 732-8001 kimmotor.com
Contemporary Corvette Bristol, PA (800) 367-8388 contemporarycorvette.com
Corvette Salvage. Com Picayune, MS (888) 467-8388 corvettesalvage.com
Ebay N/A N/A ebaymotors.com
SMC Performance Inc Aurburn Hills, MI (248) 276-0483 smcperformance.com
Price – Donor Car
Whether you’re buying a complete salvage yard car or a bunch of parts, it’s important to remember
which parts are worth money to the salvage yard and which ones are of little or no value. The drive
train, body panels and interior are of the most value. The other pieces such as the steering shaft, pedal
box, and other miscellaneous pieces usually are very inexpensive for the yard to include. When
negotiating the price from the parts yard, you might get a better deal if you let them have the parts you
won’t be using. We believe it is usually better to take the parts off yourself, because you will inevitably
do a better, more careful job. If you are using parts that are already taken off, you gain the advantage