Pulley upgrade kit? - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Forced Induction All questions and problems regarding Superchargers, Turbos, NOS, ZEX, intercoolers, water injection, etc.

Reply
 
 
 
Thread Tools Search this Thread
Old 07-10-2011, 05:20 PM   #1
Junior Member
Posts like a Ricer Type-R
Thread Starter
 
Join Date: Apr 2011
Posts: 14
Thanks: 0
Thanked 0 Times in 0 Posts
ChickenPickin' is on a distinguished road
Default Pulley upgrade kit?

I own a 1997 Bonneville SE with an L67. I'd like to put a 3.4 inch pulley on it. From what I understand, switching to a smaller pulley typically requires supporting mods. I thought I saw a kit awhile back that came with pulley, belt, colder plugs, cold air intake, and filter, but I can't find it anymore.

Are these additional modifications necessary? Does anybody package a kit containing everything needed? Do I have to modify the exhaust too?
ChickenPickin' is offline   Reply With Quote
Old 07-10-2011, 05:40 PM   #2
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Thanks: 0
Thanked 0 Times in 0 Posts
sawgunner is on a distinguished road
Default

that kit sounds like a kit intense offers. yes you will really want to to the other mods before or at the same time as dropping the pulley size. also if you do headers that will also improve the power of the mod
sawgunner is offline   Reply With Quote
Old 07-10-2011, 05:43 PM   #3
Senior Member
True Car Nut
 
sawgunner's Avatar
 
Join Date: Jan 2009
Location: Dover, NH
Posts: 7,122
Thanks: 0
Thanked 0 Times in 0 Posts
sawgunner is on a distinguished road
Default

you will also want to get a tune to your PCM before and after dropping your pulley to make sure you have no KR (knock retard) which can kill your motor
sawgunner is offline   Reply With Quote
Old 07-10-2011, 09:04 PM   #4
-- SITE DONATOR --
True Car Nut
 
ymmot04's Avatar
 
Join Date: May 2009
Posts: 4,638
Thanked 5 Times in 4 Posts
ymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of lightymmot04 is a glorious beacon of light
Default

A 3.4" SHOULD be fine on that year of Bonneville, but make sure you get a scan tool and scan for KR so you aren't damaging the engine. A 3.5" would probably be safer unless you plan on having someone tune the car as well. Definitely get the colder plugs and CAI on before dropping pulley sizes.
ymmot04 is offline   Reply With Quote
Old 07-10-2011, 10:19 PM   #5
Retired Senior Admin

Expert Gearhead
 
Danthurs's Avatar
 
Join Date: May 2006
Location: Sheboygan Wisconsin
Posts: 29,661
Thanks: 0
Thanked 16 Times in 13 Posts
Danthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to allDanthurs is a name known to all
Default

My advice, don't go smaller then a 3.5" More engines have been wrecked with a 3.4" pulley then any other mod.

To run a 3.4" here is what you will need. A scan gauge. Any time your smaller then 3.5 you should be scanning for knock retard. A shift kit, yes, sounds funny, but it does help a bit. A performance tune, even a canned tune will help. Where are you located, might have a tuner near by. High ration rockers, like 1.9:1, or better yet, a cam. And some kind of exhaust mod. PEMs are cheep and easy, but not real good, better then nothing, PLOGs, better then PEMs, or headers, best option.
Danthurs is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
(1) Brake upgrade (2) Sway bar upgrade wrair 2000-2005 3 04-04-2012 01:12 PM
FE2 swaybars upgrade: springs upgrade optional or no? Bugsi Performance, Brainstorming & Tuning 7 11-20-2005 09:16 PM
Strongly considering an upgrade...Upgrade complete! randman1 1992-1999 21 06-28-2004 01:14 AM
Nice "little" upgrade (turbo upgrade that is) Burgundy_Boat Lounge 6 09-07-2003 04:36 AM
Less boost after SC pulley upgrade? SSEi95 Forced Induction 8 05-01-2003 09:07 PM


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 02:59 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.