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Directory Topics Posts Last Post
Common Room
SyTySoGT Chat
General discussion, SyTy related or not. Most of these types of conversations are more fit for Facebook at this point, but we didn't want to eliminate this section completely.
Topics: 71 Posts: 274
71 274
Track & Racing
The proving grounds of SyTy racing. Drag strip, autoX, standing mile and street action.
Topics: 9 Posts: 34
9 34
ISTR Member Projects, Videos, & Pictures
Restorations, modifications, or just the joys of ownership...start a diary thread on your truck(s)!
Topics: 28 Posts: 158
Last Post: Syclone #2231
28 158
ISTR Forum News, Updates & Problems
ISTR news and updates regarding the forum. Post your issues or problems here.
Topics: 10 Posts: 12
Last Post: SyTy Chat Room
10 12
by Melody
ISTR Off Topic
This is a redirect to the ISTR OT on Facebook. If you are not on Facebook, anything you would normally post here may be posted in SyTySoGT Chat above.
Topics: 0 Posts: 0
0 0
Topics: 11 Posts: 13
Last Post: Aspen/Gray
11 13
ISTR Admin
Syclone (0/0)
Sonoma GT (6/8)
92 Typhoon (2/2)
93 Typhoon (3/3)
Information & Historical Data
Publication News & Documents
SyTySoGT related articles, news feeds, print media, TV appearance, and videos recently published.
Topics: 15 Posts: 16
15 16
SyTySoGT Spec Data & Buyers Guide
From part numbers to fluid info, your guide to SyTySoGT ownership.
Topics: 7 Posts: 11
7 11
SyTySoGT Historical Data
Learn about PAS, prototypes, and the history leading up to and during the production of the sportmachine trucks.
Topics: 12 Posts: 22
12 22
SyTySoGT Tech
HowTune Articles
SyTySoGT related how-to articles from modifications to fixing common issues. Sponsored by:
Topics: 7 Posts: 9
7 9
Topics: 47 Posts: 193
47 193
Topics: 17 Posts: 94
17 94
Topics: 18 Posts: 61
18 61
Topics: 4 Posts: 22
4 22
Topics: 7 Posts: 23
7 23
LS Conversions
SyTySoGT LS Conversion discussion.
Topics: 3 Posts: 50
3 50
SyTySoGT Events
SyTys @ Carlisle '20
2020 Carlisle Truck Nationals August 6th - 9th, Carlisle, PA
Topics: 0 Posts: 0
0 0
Topics: 22 Posts: 55
22 55
Topics: 51 Posts: 102
Last Post: WTB Stock turbo
51 102
S10 Guy
by S10 Guy
Group Purchase Deals
Powered by:
Topics: 3 Posts: 4
3 4
Vendors Row
Topics: 6 Posts: 14
6 14
by SVO
Topics: 1 Posts: 1
Last Post: Bumper bracket
1 1
by SyRob

Welcome to the ISTR Forums!


The International Syclone Typhoon Registry is an organization that is focused on the accurate history, preservation, technical information and data collection of the 1991-93 GMC Syclone, Typhoon, & Sonoma GT sportmachine trucks.

We appreciate you stopping by and hope you find the information you're after. We ask that you consider becoming part of the community and contributing as much as possible. We intend for this forum to be a consistent, stable resource for the entire SyTySGT community!

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Most users ever online was 330 at 04:48 AM on 03-25-2023.

ISTR Forum Stats


Topics: 427   Posts: 1,333   Members: 470   Active Members: 0
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