SLP sway bar set
Posted 04 April 2017 - 11:13 PM
Posted 04 April 2017 - 11:41 PM
Way back when, we got the GMPP kit and it included sway bars and trailing arms and strut tower brace for cheap, see pic below. I think it came from rock auto but now it does not include the rear trailing arms and the STB for the rear is the same as the front and in the kit and you simply order a duplicate. Perhaps someone will chime in with the part numbers from GMP Direct. The Don Rome brackets are a must IMHO.
Posted 07 April 2017 - 12:05 PM
If memory serves me right SLP had the largest diameter rear sway bar. If you're thinking about upgrading I'd go for it.
Posted 08 April 2017 - 05:38 PM
Posted 08 April 2017 - 06:24 PM
Posted 08 April 2017 - 06:55 PM
Posted 08 April 2017 - 10:34 PM
All are upgrades so all are good IMHO. The GMPP stuff is great and has been in the car for several years and works/feels just great. It's when you start going to replace parts in the 'upgrades' then that tends to stiffen everything up like a Grand Prix. Depends what you're looking for.
Posted 09 April 2017 - 02:40 PM
Also if I went with gmpp bars, could someone please list the part numbers for the Moog end links and bushings to use with them?
Posted 09 April 2017 - 03:08 PM
As said, the end links and bushings that come with the GMPP Kit are just fine, no need for Moog anything really. The GMPP Kit is what they put on Police Impala vehicles.... good enough. The Moog hardware is going to be of a different material IIRC.... hence, a much stiffer ride, Solid ride vs Stiff ride - pick one. Others chyme in here please, especially if you exchanged the end links, etc for a stiffer material than OEM for Buick.
Posted 25 May 2017 - 04:27 AM
Posted 26 May 2017 - 01:04 AM
Posted 30 May 2017 - 04:40 AM
I got over the harshness, when you can at least sorta hang with an sti it's worth it.
Posted 07 June 2017 - 03:14 PM
Hey Kent. I do have a couple of stbs sitting around that are in good shape...let me know just want to get them out of the garage.
As for replacement bars a dorman bar is solid for the front and will fix most issues, and can also be had for a little cheaper. Someone said they found a larger rear bar, but I don't remember where.
Personally a larger rear bar will be a more neutral feel on the car versus going big front and bog rear. All a matter of what you want in your car.
Posted 21 September 2017 - 08:33 PM
I preferred the Poly bushings for the mounts ft and rear. But used the Rubber bar links on the front that came with the GMPP bars. kept the lean to a minimum without being harsh.
Posted 14 December 2020 - 03:28 PM
What happened to 3800performance & slp bars?
They are no more
Posted 17 December 2020 - 07:23 PM
3800performance was a guy drop-shipping from the Detroit suburbs years back, but faded away (a couple Motor City ClubGP guys used to go directly to him, but that was 10+yrs ago). SLP quit on our market in ~2003, so anything left from them is scattered among the crowd.
ZZP and Intense (to a fading degree) are the only major 3800/Wbody-specific vendors remaining... Milzy is out there, too, but I haven't looked into his operation aside from some conflicting feedback.
You can either go to them, or seek what you need from innovative/resourceful places, such as re-purposing things from other engines/platforms or items from cars like Police Impalas or GP GXP's, etc. We're in a semi-drought for performance options besides the main things left available, and it may stay that way for a while, unless people heavily return to this platform (probably just engine) for use in custom projects.
Posted 20 December 2020 - 08:01 PM
It does seem like ZZP is the big player left, with Intense being a not so interested 2nd player. I've looked at Milzy's site, but the pricing is rather high compared to everyone else.
Posted 24 December 2020 - 03:42 AM
Ya, a friend in FL was able to get some Intense parts this summer, but it seems like John R. isn't putting much into it anymore (bought it from Scott C. 5+yrs back). Sad, because ZZP has shown they're willing to continue pushing the platform (Zoom's stroker M90 build, new Stg 2.5 I/C and Bosch pump modification), but that won't continue for long if there's not a strong market to make them earn it. I know they're hunting for the next platform to battle for, since the smaller GM 4cyl stuff isn't as passionate/long-term as 3800's always have been.
Posted 28 December 2020 - 11:33 PM
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