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Directory Topics Posts Last Post
Common Room
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: 45 Posts: 194
45 194
DaveP
F1 pushing for fans again
by DaveP
The proving grounds of SyTy racing. Drag strip, autoX, standing mile and street action.
Topics: 7 Posts: 17
7 17
Aeroking
Time Slip Contribution Thread
Restorations, modifications, or just the joys of ownership...start a diary thread on your truck(s)!
Topics: 21 Posts: 108
Last Post: 92 Typhoon #0255
21 108
JRoyPDX
92 Typhoon #0255
by JRoyPDX
ISTR news and updates regarding the forum. Post your issues or problems here.
Topics: 10 Posts: 11
10 11
sytyguy
ISTR Financial Reporting
by sytyguy
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
Information & Historical Data
SyTySoGT related articles, news feeds, print media, TV appearance, and videos recently published.
Topics: 15 Posts: 16
15 16
From part numbers to fluid info, your guide to SyTySoGT ownership.
Topics: 6 Posts: 10
6 10
SYO237
Stock Engine Specifications
by SYO237
Learn about PAS, prototypes, and the history leading up to and during the production of the sportmachine trucks.
Topics: 10 Posts: 12
10 12
SyTySoGT Tech
SyTySoGT related how-to articles from modifications to fixing common issues. Sponsored by:
Topics: 7 Posts: 8
7 8
Topics: 30 Posts: 104
30 104
JRoyPDX
TH350 Transmission in a SyTy
by JRoyPDX
Topics: 11 Posts: 35
11 35
Topics: 14 Posts: 38
Last Post: too much boost
14 38
Aeroking
too much boost
Topics: 2 Posts: 13
2 13
DaveP
Lighting wiring diagram
by DaveP
Topics: 4 Posts: 16
4 16
SyTySoGT LS Conversion discussion.
Topics: 3 Posts: 50
3 50
FastBlackTA
Ls Swap Single Turbo Build
SyTySoGT Events
2019 Carlisle Truck Nationals August 2nd - 4th Carlisle, PA
Topics: 3 Posts: 6
3 6
Graham1524
SyTys@Carlisle 2019 - ROSTER
2018 Carlisle Truck Nationals August 3rd - 5th Carlisle, PA
Topics: 6 Posts: 16
Last Post: Itenerary
6 16
Tbauer03
Itenerary
2017 Carlisle Truck Nationals August 5th - 7th Carlisle, PA
Topics: 11 Posts: 52
11 52
Topics: 22 Posts: 55
22 55
Aeroking
4th Annual Buffalo SyTy Meet
Classifieds
Topics: 38 Posts: 80
Last Post: Zr1 wheels
38 80
drhill
Zr1 wheels
by drhill
Powered by:
Topics: 4 Posts: 5
4 5
Vendors Row
Topics: 6 Posts: 14
6 14
SVO
BRUTUS: The new shop Typhoon
by SVO
Topics: 0 Posts: 0
0 0
Topics: 1 Posts: 1
Last Post: Bumper bracket
1 1
SyRob
Bumper bracket
by SyRob

Welcome to the ISTR Forums!

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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.

Please consider becoming an ISTR member to gain access to REALLY cool stuff, get entered into members only raffles, and to get discounts from our vendors!

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There are currently 20 users online. 2 members and 18 guests.

Most users ever online was 121 at 12:18 PM on 05-05-2017.

ISTR Forum Stats

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Topics: 336   Posts: 944   Members: 317   Active Members: 27
Welcome to our newest member, drhill.
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