Suspension / ChassisQuestions about your suspension? Need chassis advice?
Welcome to ThirdGen.org!
Welcome to ThirdGen.org.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join the ThirdGen.org community today!
I just finished installing the Jegster SFC's. All I can say is WOW!! what a difference.
The significantly reduced cowl shake, jounce over bumps, and rattles is amazing. I am not regularly impressed by performance parts, but this product is impressive in the difference it made. The fit to the car was outstanding...nice and tight up against the sill lip, with nothing visible below the car. They bolted right up. I have a 3-inch Flowmaster exhaust and there is at least a 1.5 inch gap between the SFC's and the exhaust.
I did not have to hassle with the exhaust at all!!!
Another thing is that they are precisely the correct length in order that the bolt holes align to the factory welded seam of the front sub-frame. The bolts go right where the metal is the thickest....very well engineered.
Installation took about 2 hours, after which I went down to the local performance exhaust shop and had them welded in. The guy at the shop said that they were the best SFC's he has seen yet for F-bodies. He asked me where I got them, and when I said Jegs, he picked up the phone and called and ordered 5 sets right there in front of me!! He said that he gets a discount from Jegs, and that he could sell them installed for $400.00 all day long. He even did the welding for free!!
Unlike other SFC's, the Jegster's fit tight up against the sill lip. This enables them to be mig-welded to the reinforced area of the sill plate without having to take up the carpet!!! This alone is worth every penny of the $179.99 they cost.
I know this sounds like I am a Jegs employee, but, I have had a lot of performance cars over the years, and I have lost count the number of times I have ordered a 'bolt-on' product only to cut, bend, grind and cuss before it fits up. I know that making SFC's is not rocket science, but it is nice to see a well crafted product that performs as advertised and at a good price.
The GTA I just purchased is the first third-gen GM car I have owned. The obvious question now is, why in the hell did GM not install something like this on these cars from the factory!! It boggles the mind how much more satisfying it is to own a car that feels solid and planted, and that makes you want to go out and by another car from GM. I have heard a hundred stories about how these cars sound like a bucket of junk inside from all the groans, rattles and squeaks, about how they crack above the door jambs, etc........a couple pieces of boxed steel makes them go away??? Hopefully GM has learned a few things since 1988.
I was wondering the other day about the same things with GM but its inherent with the unibody design that there will be rattles and cracks from its weak design. All in the name of saving money and materials thats why there aren't any reinforcements because they were trying to get away from the frame on body design.
I noticed though that I never heard any kind of frame rattles or whatnot in my dad's 84 Olds station wagon - simple reason - its body on frame design. You're basically just framing up a unibody which is an oxymoron.
I need a set of them too my car squeaks so bad and I can feel it flexing under stress just when I punch it.
__________________ 1988 Trans Am GTA
5.7 L98
700R4
3:27 posi rear
Aluminum Driveshaft
Engine: Holley Stealthram, Accel 24lb Injectors, Msd Superconductors, Ceramic Coated Edlebrock Headers, Gutted Cat, Hooker Catback, TPIS Airfoil, 160 Stat, Jet Cooling fan Switch, LSracing Custom PROM
Trans: Probuilt Street/Strip 700R4, Edge Racing 9.5 inch 2800 Stall Converter, Energy Suspension Poly Trans Mount
Chassis: Spohn SFCs, Spohn LCAs W/ Relocation Brackets, TDS Wonderbar, and a set of Nitto Drag Radials to plant the power.
Best ET 14.5 Best Mph 96.5 ( no new times since intake, chip, new trans or converter) http://www.cardomain.com/ride/2068044/1
do you have any pictures, or dimensions of these connecters, my brother is a welder/metal worker and would like to attemt to make a set for my 86 t-top
Originally posted by Z28guy83 i have them and they made a big difference now if i can just find that mystery rattle i have i would be set
Hey! the mystery rattle! I have that too
I was hoping sfcs would take care of that, darn. well, i need them anyways, i fell like the wheels are gunna come off even now when i gun it, in a week or so, when i have 400+ lbs of torque hehehehe (old motor is pulled, new one to be set in tonight!!!) im really going to feel like the thing is falling apart. its on my christmas list, although i may just buy some now, dont know if i can wait til next spring to put them on!
MORE POWER :hail:
__________________ ----------------------------------------------------------
Black Black '91 RS
383, Vortec heads, Keith Blacks, 6" H-Beams, Performer RPM AirGap, Holley 750, custom 3" exhaust with Flowmaster, Turbo 350 Manual Valve Body, Posi.
Alpine CDA-7853 Head Unit, 3 JL 10W6s powered by Precision Power PC1800 w/ Qbass, 6 1/2 Focal Components in Qforms powered by Precision Power PC4800, Kicker MB6 Midbass drivers in doors powered by Precision Power PC2400, Kicker KX-3 3-Way Crossover, Alpine ERA-G320 graphic EQ, I-pod adapted, Stinger wiring, distribution
if you have the mystery rattle and dont have SFC's then i know its not cause of them ......and as far as it goes i gave up till it breaks ir falls off i wont be able to find what it is someon told me it might be my hatch ..... but who knows
oh and i dont have any pictures of the SFC's installed
ok so i checked out my jegs catalog, im assuming you got the "bolt-in frame ties" (#550-40053) and had them welded on? im assuming so b/c its the right price and everything. my mystery rattle sounds to me like loose ground effects or something but nothing seems to be out of place. I too have resorted to waiting and watching my rearview for something falling off. Im guessing the dumb thing is just gunna rattle forever though. BOO I hate that.
__________________ ----------------------------------------------------------
Black Black '91 RS
383, Vortec heads, Keith Blacks, 6" H-Beams, Performer RPM AirGap, Holley 750, custom 3" exhaust with Flowmaster, Turbo 350 Manual Valve Body, Posi.
Alpine CDA-7853 Head Unit, 3 JL 10W6s powered by Precision Power PC1800 w/ Qbass, 6 1/2 Focal Components in Qforms powered by Precision Power PC4800, Kicker MB6 Midbass drivers in doors powered by Precision Power PC2400, Kicker KX-3 3-Way Crossover, Alpine ERA-G320 graphic EQ, I-pod adapted, Stinger wiring, distribution
if you have the mystery rattle and dont have SFC's then i know its not cause of them ......and as far as it goes i gave up till it breaks ir falls off i wont be able to find what it is someon told me it might be my hatch ..... but who knows
oh and i dont have any pictures of the SFC's installed
If you still have your stock brake calipers you may want to check them. My '92 RS has a hard to track down rattle. I found that it's the caliper bouncing around on it's bolts. Aply a small of brake and the noise stops. I'm assuming that the bolt holes are worn which allows it to hop around a bit.
down that road already my mystery noise sounds like part of the body is gonna fall off i replaced al my calipers now im starting to do the bushings etc etc
Originally posted by TA-Wizard I just finished installing the Jegster SFC's. All I can say is WOW!! what a difference.
The significantly reduced cowl shake, jounce over bumps, and rattles is amazing. I am not regularly impressed by performance parts, but this product is impressive in the difference it made. The fit to the car was outstanding...nice and tight up against the sill lip, with nothing visible below the car. They bolted right up. I have a 3-inch Flowmaster exhaust and there is at least a 1.5 inch gap between the SFC's and the exhaust.
I did not have to hassle with the exhaust at all!!!
Another thing is that they are precisely the correct length in order that the bolt holes align to the factory welded seam of the front sub-frame. The bolts go right where the metal is the thickest....very well engineered.
Installation took about 2 hours, after which I went down to the local performance exhaust shop and had them welded in. The guy at the shop said that they were the best SFC's he has seen yet for F-bodies. He asked me where I got them, and when I said Jegs, he picked up the phone and called and ordered 5 sets right there in front of me!! He said that he gets a discount from Jegs, and that he could sell them installed for $400.00 all day long. He even did the welding for free!!
Unlike other SFC's, the Jegster's fit tight up against the sill lip. This enables them to be mig-welded to the reinforced area of the sill plate without having to take up the carpet!!! This alone is worth every penny of the $179.99 they cost.
I know this sounds like I am a Jegs employee, but, I have had a lot of performance cars over the years, and I have lost count the number of times I have ordered a 'bolt-on' product only to cut, bend, grind and cuss before it fits up. I know that making SFC's is not rocket science, but it is nice to see a well crafted product that performs as advertised and at a good price.
The GTA I just purchased is the first third-gen GM car I have owned. The obvious question now is, why in the hell did GM not install something like this on these cars from the factory!! It boggles the mind how much more satisfying it is to own a car that feels solid and planted, and that makes you want to go out and by another car from GM. I have heard a hundred stories about how these cars sound like a bucket of junk inside from all the groans, rattles and squeaks, about how they crack above the door jambs, etc........a couple pieces of boxed steel makes them go away??? Hopefully GM has learned a few things since 1988.
I had a similar experience with my Spohn SFCs. What a difference!
Thanx,ANDYZ28
__________________ 82 Z28- 383 roller w/Vortec heads Edelbrock Performer Vortec intake, Edelbrock Q jet, serpentine belt drive.TH700R4 w/B&M holeshot 2000 converter,& megashifter.1LE front brakes, 9bolt 3.27 w/1LE rear brakes.Aluminum driveshaft,boxed rear susp. poly everything, IROC swaybar+wonderbar and steering box. Spohn subframe connectors. 70mph@2200rpm ASE Master Tech plus L2
also Latest project car,'86 IROC stock 305TPI hit on left side,but not too bad ( now repaired and equipped with the 1LE brake system). Also 1990 IROCZ 5.0 TPI 5 speed (drive train has 150 miles since new), and another 1990 IROCZ 5.7 G-92 etc., and yet another 1990 IROC-Z, red w/flames, and 1988 IROC-Z convertible, red w/59,000 miles.
pics would be cool, to see what the connectors look like and also of where how they mount onto car exactly.
hmm
__________________ IM or text me 217 671 7792 i don't check forums often!! fastr68 on yahoo msngr anytime! 1982 Trans Am HT WS7 - i have no F-body cars any more- i still do have many '82 to 84 AND '85-up bird and camaro parts and parting out 1991 S10 also all pieces blue colorCo-Founder of the Early Bird Club(82-84)