1989 camaro iroc z28 vert chassis flex
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Junior Member
Joined: Aug 2013
Posts: 12
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From: long island new york
Car: 1989 camaro vert
Engine: 305tpi/350tpi
Transmission: tr700
1989 camaro iroc z28 vert chassis flex
I kno their are many posts about this but I want to put a 350 or 383 in my vert but what do I need to do so i dont twist the car in half
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Joined: Dec 2000
Posts: 1,271
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From: stallings,n.c.
Car: 1989 camaro rs convertable
Engine: 305 tbi
Transmission: 700r4
Axle/Gears: 7.5"3.42 gears forth gen 2000 camar
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
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: 1989 camaro iroc z28 vert chassis flex
Don't hit the gas too hard.
My Formula 350 convertible has no problems... It is a stock engine, I do not plan on modifying or upgrading it either... Actually it probably squeaks less than almost any other 3rd gen I own.
My Formula 350 convertible has no problems... It is a stock engine, I do not plan on modifying or upgrading it either... Actually it probably squeaks less than almost any other 3rd gen I own.
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Joined: May 2005
Posts: 1,057
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From: Malvern, Arkansas
Car: 90 IROC 2-92 Zs blk vert & prpl
Engine: stealth ram brodix track 1 ful port
Transmission: 700r4 4l80e
Axle/Gears: iroc 375 lokr 92 Z 277 pos vert 327
Re: 1989 camaro iroc z28 vert chassis flex
Mine has the stock 305 tpi but I have stiffened up the suspension with all the lower control arms and all red sway bar and trans mount bushings, bilstein shocks, the works. It drives almost like a go-cart now and cracked the windshield the first time I took it around a good corner. I dont have sub frame connectors yet but that is on the list. I am going with a mild 350 since it will be a cruiser the rest of its life. They really do flex quit a bit.
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From: Doghouse ······································ Car: 1989 Formula 350 Vert Engine: 350 L98 Transmission: 700R4 Axle/Gears: B&W 3.27
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: 1989 camaro iroc z28 vert chassis flex
I will admit that yes they flex... Just take it down my driveway...
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From: Michigan!
Engine: Vortec 4200 Inline 6 PT70 Turbo..
Transmission: 4L65E
Axle/Gears: 3.73
Re: 1989 camaro iroc z28 vert chassis flex
I've made a few hundred track passes with 600-800hp..most were leaving violently off the transbrake.. It has Southside machine subframe connectors and a beefed up 6 point rollbar welded through the floor ONTO the subfames.. The rear lower control arms are tied into the subframe connectors also hich really helps get the power into the "chassis".. These cars are flimsy, thats a fact. The convettibles have some additional support but more is needed. Mine has never wrinkled the quarter panels, thankfully..
Doing just beefy subframe connectors helps a lot and actually makes the car stronger in a crash situation.. My SSM subframes were welded into my t top car 3 days before I totalled it.. I t boned a truck that turned in front of me. All of the front end damage stopped at the doors.. The gront portion of the subframes... We cut them out and they are now on my vert!
Doing just beefy subframe connectors helps a lot and actually makes the car stronger in a crash situation.. My SSM subframes were welded into my t top car 3 days before I totalled it.. I t boned a truck that turned in front of me. All of the front end damage stopped at the doors.. The gront portion of the subframes... We cut them out and they are now on my vert!
Last edited by AutoRoc; Nov 6, 2013 at 11:14 AM.
Joined: Oct 2001
Posts: 12,223
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From: Il
Car: 1989-92 FORMULA350 305 92 Hawkclone
Engine: 4++,350 & 305 CIs
Transmission: 700R4 4800 vig 18th700R4 t56 ZF6 T5
Axle/Gears: 3.70 9"ford alum chunk,dana44,9bolt
Re: 1989 camaro iroc z28 vert chassis flex
Put it in and enjoy.
Unless car is very rusty, you won't have a problem.
Subframe connectors are a must on any 3rdgen that will be driven.
Unless car is very rusty, you won't have a problem.
Subframe connectors are a must on any 3rdgen that will be driven.
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Re: 1989 camaro iroc z28 vert chassis flex
use outter SFCs - UMI or Jegster
and inner SFCs - MAC or Alston
this will stiffen the car up quite a bit, dual SFCs may be a bit of overkill.... Maybe you can install 1 set and see how you like it. If you want stiffer, install the 2nd set.
and inner SFCs - MAC or Alston
this will stiffen the car up quite a bit, dual SFCs may be a bit of overkill.... Maybe you can install 1 set and see how you like it. If you want stiffer, install the 2nd set.
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