Pulley Changeover to a 3.4" - Page 2 - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


2000-2005 Discuss your 2000-2005 Bonneville SE, SLE, and SSEi Please use General Chat for non-mechanical issues, and Performance and Brainstorming for improvements.

Reply
 
 
 
Thread Tools Search this Thread
Old 05-19-2003, 08:13 PM   #11
Senior Member
True Car Nut
 
Join Date: May 2003
Location: Holt, MI & Lima, OH
Posts: 3,022
Thanks: 0
Thanked 0 Times in 0 Posts
dbtk2 is on a distinguished road
Default

Quote:
The 90 mph hesitation is the PCM dumping the boost valve and this can be corrected by bypassing the solenoid.
The difference in torque is impressive with the 3.4" but I would recommend going to the 3.25" with a cone filter.
1) How do you bypass the solenoid, and I am assuming this still needs to be done on a 2000 SSEi?

2) I would definately NOT install a 3.25 with just a Cone Filter. You will get SO much Knock Retard you will be slower than with the 3.4. Install a 3.4, then once you get enough mods, and verify with a scan tool that you are getting 0KR, go to a smaller pulley then run the scan tool and see how much KR you are getting then. If it is less than 2KR then you will probably have more power leaving that pulley on, if it is more, then go to the next size bigger pulley.
dbtk2 is offline   Reply With Quote
Old 05-19-2003, 10:38 PM   #12
Junior Member
 
Join Date: Jun 2002
Posts: 0
Thanks: 0
Thanked 0 Times in 0 Posts
2000SilverBullet is on a distinguished road
Default

Quote:
1) How do you bypass the solenoid, and I am assuming this still needs to be done on a 2000 SSEi?

2) I would definately NOT install a 3.25 with just a Cone Filter. You will get SO much Knock Retard you will be slower than with the 3.4. Install a 3.4, then once you get enough mods, and verify with a scan tool that you are getting 0KR, go to a smaller pulley then run the scan tool and see how much KR you are getting then. If it is less than 2KR then you will probably have more power leaving that pulley on, if it is more, then go to the next size bigger pulley.
1) http://www.bonnevilleclub.com/forum/...pic.php?t=4481

2) Thanks for the advice. I have reconsidered and agree with you.

Quote:
why are you worried about waiting to do exhaust? I could understand headers maybe but the exhuast system itself even with a high flow cat makes a huge difference with a CAI and that definitely won't void your warranty....believe me I even asked specifically about that.

Jason
Hey that'* a good suggestion.
I just might do that.
2000SilverBullet is offline   Reply With Quote
Old 05-29-2003, 12:15 AM   #13
Member
Posts like a V-Tak
 
Join Date: Aug 2002
Location: New Jersey
Posts: 95
Thanks: 0
Thanked 0 Times in 0 Posts
streetracer is on a distinguished road
Default Re: Curious

Quote:
Originally Posted by jasonapr78
Streetracer,

I have a 2001 SSEi and am about to start my modifications myself. I'm having a custom exhaust done with a high-flow cat, CAI, and a 180 T-Stat. I expect to see a nice gain in HP and torque and haven't looked seriously yet into changing the pulleys although that would probably be my next step after I get headers installed. My question to you is were you completely stock when you threw in the 3.4"? I would obviously have the exhaust, cat, 180 t-stat, and CAI done at the very least so I would expect to see a more increase in power than you did if you only have the pulley? Also, do you have any existing warranty on your car? I have warranty (bumper-to-bumper) up to 150,000 and I'm sitting on 52,000 right now so I wanna be careful and not void my warranty...that'* why I haven't seriously considered the pulley yet. Just let me know..thanks!

Later,
Jason
I was completely stock when putting on the pulley. You should see more gains with those additional mods. The smaller pulley makes the supercharger push more into the engine - basically sucking it in from intake. A cold air intake will let it pull-in a greater amount of cooler (denser) air. The exhaust will let you get out used air faster and easier, meaning less boost waisted pushing it out of engine.

The intake, exhaust, and t-stat will also keep engine cooler, which will prevent knock retard and allow increased timing. This is usually not much of a problem with 3.4" pulley - but varies based on car and conditions.

You may want to use SLP parts if you do not want void warranty, or least maintain net coverage.

SLP offers a warrany which covers voided portions of GM warranty. They are also essentially an offical GM tuner. You use to be able to order GTX for Grand Prix and FireHawk for Firebird packages right from the dealer. GM would ship car to SLP for installation!
streetracer is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
The difference between "guts" and "balls" sse1990 Lounge 8 08-31-2006 11:31 PM
Where is the "chime" / "dinger"? PPrash 1992-1999 6 11-21-2005 09:11 AM
CHANGEOVER FINALLY COMPLETE smoosh 1987-1991 13 08-16-2004 08:32 PM
'91 L "snakes" intake on a "C" engine ? padgett 1987-1991 5 07-21-2003 08:12 PM
"D" or "OD" ? BusMaster007 1992-1999 23 01-09-2003 03:09 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 06:55 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.