Hey all,

First suspension mod I'm going to make are a pair of subframe connectors for my 2000 Pontiac Trans Am WS6. Three questions I have are:

Which brand / model is best? Ground Clearance is not an issue since I have not / probably will not lower the car.

What the heck is chrome moly? And is it worth the $$$ for a Daily Driver / Autocross car ?

The kind I am leaning twords are the Kenny Brown Double Diamond Subframe Connectors 93-02 Convertibles
http://www.lmperformance.com/2940/14.html

I am really excited about SFC because of how great the reviews are for them in general. But not many people get specific by brand / model etc.

Thanks a ton for your help / opinion / expertise

 

I'm too newb to have any info, but this thread might be better served in the Handling and Braking forum, even though it's vert-specific... mostly because more people will see it there.

Random question, do you know if those SFCs you linked are bolt-in or weld-in?

 

I'm very happy with my BMR SFC's. Really tightened up the car. Even stopped the small water leak between the A Pillar and the top.

 

I HAVE THE Kenny Brown Double Diamond Subframe CONNECTERS THEM.thay made the car so much tighter and the sit veryclose to the underbodie.im very happy with them

 

BMR here too.

 

I have BMR and truthfully they really didn't make a difference IMO. I sure don't feel one.

 

I have the KB's on mine and it made a big diffrence in stiffness. They are weld in, and excellent fit and quality. I saw some copies on ebay recently for about half the price, don't know about their quality though.

Basically chrome moly is very strong metal, more costly to produce too. Its pretty much mandatory for roll cages in competition cars...but you don't "need" it for SFC's

 

I'm fairly certain that the purpose of chromoly is just to be lighter. It's stronger than standard steel used in most suspension parts, so they make the walls thinner. Thus, these parts are slightly lighter than their regular steel counterparts. To be honest, unless you are really concerned with saving weight (and you're the type of guy who gutted the car and removed the steel bumpers) they're just the same part that is more expensive.

 

I have Don Goetz Sub Frame Connectors. I noticed a difference as soon as I drove down the driveway.

 

As stated above chromoly is simply stronger, not stiffer. You are getting less for more money with chromoly since all carbon steels are the same stiffness and you want to add stiffness to your car.

 

KBDD welded in here, and I simply love them. The car is much stiffer, rides better, and seems to handle a little better also.

 

Just got my BMR weld in SFC's put on yesterday, and i can only tell a little bit of difference. Maybe the KBDD would have been a better choice for a vert.

 

lol am I the only one who made his own. but yeah I noticed a diff

 

Could you show us some pictures? I might make my own but the only good pictures I have seen are on coupes.

 

I'll have to go get my buddy's Camara to get the pictures sorry i'll do it this weekend

 

BMR's welded on.

 

Ditto.

Chromemoly will save you weight but may require a tig welder to install them.

 

BMR's in my 94 vert...made the car ride like an 00...seriously...rattles shakes all gone...weld in!!!! Do not Bolt or you'll just end up weldin em later.

 

/i plan on the KB's as well.

 

Well I just welded in the Kenny Brown Double Diamonds and I can tell a big difference. The car feels totally different. Just driving through town the car feels tons stronger.

Next weekend is the two day autoX event at Miller Park in Milwaukee. I'll be interested if some of the other WS6 owners will be able to tell cuz we switch cars etc all day.

The welding wasn't all that hard at all. They went in easy and in my opinion they were the strongest ones out on the market.