Factory GM Sub Frame Connectors????
#1
Junior Member
Thread Starter
iTrader: (3)
Join Date: Jan 2007
Location: Rhinelander, WI
Posts: 94
Likes: 0
Received 0 Likes
on
0 Posts
Car: 89 Formula
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: 9 Bolt 3.27
Factory GM Sub Frame Connectors????
Did GM ever produce or have RPO code for factory sub frame connectors? I know the IROC-Z28 have the wonder bar in the front. Reason being a friend of mine insists that his IROC came with factory sub frame connectors. I could and or understand that maybe a dealership would install aftermarket on a t-top car with a 5-speed. But don't see a RPO code for factory sub frame connectors.
#4
Senior Member
Re: Factory GM Sub Frame Connectors????
my uncle owns a 89 GTA convertible, I'll ask to see if he has any pics of the undercarrage.
I've seen the undercarrage of it and i have to say it's much more beefy then a typical 3rdgen chassis.
I've seen the undercarrage of it and i have to say it's much more beefy then a typical 3rdgen chassis.
#6
Moderator
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 164 Likes
on
119 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Factory GM Sub Frame Connectors????
No the T-top cars may have had a more substantial floor, but beyond that there was nothing significant about the structure. The biggest difference is T-top cars had the door jamb wedges that would stiffen the car, it transferred the load to the door jamb itself rather than the Chassis.
You can see the "factory" SFC's on my car here...
You can see the "factory" SFC's on my car here...
#7
Senior Member
Re: Factory GM Sub Frame Connectors????
wow, didn't know this topic was off for awhile, time flys after the holidays are over!
well i was searching and searching for a pic of the undercarrage of convertible 3rd gen and finally found a good one, off a ebay pic....so i thought i post it here to show what it looks like for the undercarrage support of a 3rdgen convertible. Also Ofkoz, i haven't ignore you about the information for my uncle's gta convertible. He just hasn't had any time for the past few weeks for me to go down and see it....but i'll keep you inform as soon as i can...
well i was searching and searching for a pic of the undercarrage of convertible 3rd gen and finally found a good one, off a ebay pic....so i thought i post it here to show what it looks like for the undercarrage support of a 3rdgen convertible. Also Ofkoz, i haven't ignore you about the information for my uncle's gta convertible. He just hasn't had any time for the past few weeks for me to go down and see it....but i'll keep you inform as soon as i can...
Trending Topics
#8
Moderator
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 164 Likes
on
119 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Factory GM Sub Frame Connectors????
No problem
#11
Moderator
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 164 Likes
on
119 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Factory GM Sub Frame Connectors????
I know the sunbird and cavalier used similar subframe connectors, not sure how different they are. I know our cars are shorter for sure because you can take the trim piece from a Cavalier convertible from the same era, cut it to fit my Formula.
John
#12
Senior Member
iTrader: (2)
Join Date: Oct 1999
Location: Hattiesburg, MS, USA
Posts: 893
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1992 Jade Green---Trans Am Converti
Engine: LS1
Transmission: T56
Re: Factory GM Sub Frame Connectors????
Here's a good shot of the passenger side:
You can see it's a u-shape, but is formed to follow the floor pan curves. It pretty much covers just the pinch weld and does not tie the sub-frames together.
The UMI pieces make great additions and improvement:
Kevin D.
You can see it's a u-shape, but is formed to follow the floor pan curves. It pretty much covers just the pinch weld and does not tie the sub-frames together.
The UMI pieces make great additions and improvement:
Kevin D.
#14
Moderator
Join Date: Mar 2001
Location: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
Posts: 14,235
Received 164 Likes
on
119 Posts
Car: 87 Formula T-Top, 87 Formula HT
Engine: 5.1L TPI, 5.0L TPI
Transmission: 700R4, M5
Axle/Gears: Sag 3.73, B&W 3.45
Re: Factory GM Sub Frame Connectors????
I am not positive, but it would not surprise me if they used basically the same SFCs for most of the cars they converted, from the Rivieras to the F-body, they would trim and modify them to fit.
John
John
#16
Supreme Member
iTrader: (1)
Join Date: Jul 2007
Location: Great Smoky Mountains, Bryson City North Carolina
Posts: 1,258
Likes: 0
Received 1 Like
on
1 Post
Car: 86WS6 30K and 82WS7 24K
Engine: 86:305 TPI, 82: 305 LG4
Transmission: 86:700R4, 82: T200C
Axle/Gears: 86:3:27 9 bolt, 82: 3:23 10 bolt
Re: Factory GM Sub Frame Connectors????
Those look nice. It almost makes a framed car out of a thirdgen. How effective are they?
Thread
Thread Starter
Forum
Replies
Last Post