Intake Manifold on New (to me) Riviera

Subject: Intake Manifold on New (to me) Riviera Sun Apr 17, 2011 11:45 pm

Hi all, im glad to have found this great forum.

I just got a 97 Riviera supercharged.
Currently the car is in great condition--everything works.

I wanted to change the intake manifold and gaskets, as this is a common problem for gm 3.8 engines.

Here is a part I found:
http://www.amazon.com/Dorman-615-180-Intake-Manifold/dp/B000C17G5E/ref=au_pf_pfg_s?ie=UTF8&Model=Riviera|394&n=15684181&s=automotive&Make=Buick|45&Year=1997|1997&newCar=1&carId=004

My question is, are supercharged 3.8 intake manifolds different, from non-supercharged ones? And will the part fit?

Also what are parts I should look to replace on the car?

Thanks in advance.

Subject: Re: Intake Manifold on New (to me) Riviera Sun Apr 17, 2011 11:50 pm

On the supercharged 3.8L the supercharger IS the intake manifold. These are not prone to failure like the N/A 3.8L.
If you want to dig into the motor you can change the LIM gaskets. Try searching around some in the "write-ups" link at the top of the page for more info and where to start.

Welcome

_________________
1996 with 254k miles, L32 4" FWI -> ported N* -> Ported Gen V w/3.0" Pulley, Stage 3 Phenolic I/C, ZZP FMHE, 1.84 RR, Headers and 3" pipe to mufflers, F-body brakes, and lowered on Eibachs. -RIP
AMG C400 White on black. Stage 2 w/E30 - 11.9@117 -daily
Intake Manifold on New (to me) Riviera Dsc_0110

Intake Manifold on New (to me) Riviera Dsc_0110

Subject: Re: Intake Manifold on New (to me) Riviera Sun Apr 17, 2011 11:55 pm

Thanks so much....wow... well that was stupid.
I dont have any experience with superchargers, but i knew something wasn't adding up lol.

Any recommendations on parts to replace that are problem prone??

Thanks again

Subject: Re: Intake Manifold on New (to me) Riviera Mon Apr 18, 2011 12:54 am

https://rivperformance.editboard.com/t769-faq-high-mile-club-wear-repair-reports

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'98 SC Riviera • 281k miles • 298 HP/370 TQ • 0-60: 5.79s • ET: 13.97 @ 99.28 • 4087 lb • 20.1 avg MPG • Nelson Ledges Lap: 1:30
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» Write-Up: Lower Intake Manifold (LIM) Gaskets
» Intake Manifold Replacement and ???
» New mods.. Gen V, Gen V lower intake manifold, N* TB
» Intake manifold leak at valley
» Write-Up: Lower Intake Manifold change on a '95