p.1: Exterior pics and history
p.2: Performance Modifications
p.3: Other mods (you are here)
p.4: Pictures with other vehicles
The L67 engine proudly continued Buick's tradition of V6 forced-indction power.
Pulleys:
While doing the Camshaft, I replaced the tensionner pulley (right #3 on the picture) with a larger 3.5" metal unit. It picked up the slack in the supercharger belt.
As previously mentionned, I changed the lower s/c idler pulley (#9) with a heavy duty metal part.
Strut tower brace:
The brace by on its own
Installed
This part was OEM on the Cadillac Seville, which was on the same basic platform as the Riviera.
The brace(gm part# 25653157) as shipped most likely will not clear the brake fluid reservoir so you'll have to double bend the tabs a little bit to get some extra height.
Shim the STB using a 2 washers
Now you have about 1-2 mm clearance with the brake fluid reservoir.
ADDCO swaybars
Front: p/n 02018 1 1/4" (32mm)
Rear: p/n 02015 7/8" (22mm)
These bars were designed for the cadillac seville STS and replace the stock bars which are respectively 28mm and 17mm. The rear addco bar makes the stock rear bar look like a coat hanger. Handling is greatly improved by these bars and I really recommend them. If you DO order these from one of addco's distributors, make sure to mention you REQUIRE the spacer plates for the front bushings and that you want the rear 22mm bushings from addco too (GM P/N 25666235). You will NOT be able to install the bars without these parts and addco does not supply them by default!
