Need more HP out of a 1999 L67 motor - GM Forum - Buick, Cadillac, Chev, Olds, GMC & Pontiac chat


Performance, Brainstorming & Tuning Talk about modifications, or anything else associated with performance enhancements. Have a new idea for performance/reliability? Post it here. No idea is stupid! (please use Detailing and Appearance for cosmetic ideas)

Reply
 
 
 
Thread Tools Search this Thread
Old 02-12-2006, 09:31 PM   #1
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Oct 2004
Location: Winchester, Virginia
Posts: 190
Thanks: 0
Thanked 0 Times in 0 Posts
Taylora is on a distinguished road
Default Need more HP out of a 1999 L67 motor

Hey guys I am trying to get more horsepower out of my new 1999 Bonneville SSEi with out making the car loud which means no Flowmaster on this one. This is my first Bonneville this new and the fact of it being Supercharged. I would like to have some ideas for the future. Thanks

A.J.
Taylora is offline   Reply With Quote
Old 02-12-2006, 09:39 PM   #2
Senior Member
Posts like a Camaro
 
Join Date: Apr 2005
Location: montreal, Canada
Posts: 1,108
Thanks: 0
Thanked 0 Times in 0 Posts
mike_peperni is on a distinguished road
Default

-3.4 pulley -Fenderwell intake(supercharger louder=fun)
-colder plugs
-Reprogrammed PCM (intense or DHP)
-180 thermostat
-Rockers

Those are what i see without doing some exhaust job(cat, downpipe , headers...)

Just with that you can get very low 14'*.

The 3.4 pulley,FWI, and colder plugs are what people begin with.

*note: you need at least the intake and the plugs for supporting mod to go with the 3.4 pulley.


With that you will love it
mike_peperni is offline   Reply With Quote
Old 02-13-2006, 12:22 AM   #3
Senior Member
Certified Car Nut
 
Join Date: Oct 2003
Posts: 19,756
Thanks: 0
Thanked 0 Times in 0 Posts
1993 SLE is on a distinguished road
Default

a hight flow cat is also a good idea...you dont have to change the muffler unless you want a different sound (No performance gain to a muffler) but the gains from a high flow cat would be to your advantage
1993 SLE is offline   Reply With Quote
Old 02-13-2006, 08:48 AM   #4
Senior Member
Posts like a Turbo
 
Join Date: Jan 2005
Location: Melbourne, FL
Posts: 289
Thanks: 0
Thanked 0 Times in 0 Posts
96SSEi_tampa is on a distinguished road
Default

I pretty much just have an intake, colder plugs, a cat, and the 3.4" pulley and I run a [email protected] at the track on street tires. Add some slicks or drag radials to get the sixty foots down to ~2.1sec and my car should be around a 14.3.

Be sure to get a scantool to scan for knock retard. Without the help of some toluene to bump me up to 95 octane I could only run a [email protected] because the PCM pulled timing when it saw the knock I was getting one the high end.
96SSEi_tampa is offline   Reply With Quote
Old 02-13-2006, 12:54 PM   #5
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Oct 2004
Location: Winchester, Virginia
Posts: 190
Thanks: 0
Thanked 0 Times in 0 Posts
Taylora is on a distinguished road
Default

Well here is another question about the Supercharger. There is a slight knocking noise in the supercharger it only does it when in Park, when the car is put into gear it stops what is the problem?


A.J.
Taylora is offline   Reply With Quote
Old 02-13-2006, 12:58 PM   #6
Senior Member
True Car Nut
 
Join Date: Jan 2005
Location: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Posts: 3,882
Thanks: 0
Thanked 0 Times in 0 Posts
sonoma_zr2 is on a distinguished road
Default

Quote:
Originally Posted by Taylora
Well here is another question about the Supercharger. There is a slight knocking noise in the supercharger it only does it when in Park, when the car is put into gear it stops what is the problem?


A.J.
sounds like you need a coupler.
sonoma_zr2 is offline   Reply With Quote
Old 02-13-2006, 01:39 PM   #7
Senior Member
Posts like a Supercharger
Thread Starter
 
Join Date: Oct 2004
Location: Winchester, Virginia
Posts: 190
Thanks: 0
Thanked 0 Times in 0 Posts
Taylora is on a distinguished road
Default

What kind of coupler. I would like to know because I am going to the dealership on friday to get it checked out. If you might know I would like tell them what it needs.

A.J.
Taylora is offline   Reply With Quote
Old 02-13-2006, 01:45 PM   #8
Senior Member
True Car Nut
 
Join Date: Jan 2005
Location: Montevideo, MN MWBF '05, '06, '07 WCBF '06 '07 survivor
Posts: 3,882
Thanks: 0
Thanked 0 Times in 0 Posts
sonoma_zr2 is on a distinguished road
Default

Quote:
Originally Posted by Taylora
What kind of coupler. I would like to know because I am going to the dealership on friday to get it checked out. If you might know I would like tell them what it needs.

A.J.
change it yourself, but test first. remove belt from supercharger pulley and spin pulley back and forth quickly. Do you feel/hear play?.

sonoma_zr2 is offline   Reply With Quote
Old 02-13-2006, 02:03 PM   #9
DINOSAURUS BOOSTUS

Expert Gearhead
 
BillBoost37's Avatar
 
Join Date: Mar 2005
Location: Enfield, CT
Posts: 41,391
Thanks: 0
Thanked 0 Times in 0 Posts
BillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of lightBillBoost37 is a glorious beacon of light
Default

To go further on what Sonoma said. It sounds like a coupler to me as well.

There are about 10 bolts, all 10mm that come out after the belt is off. then the nosedrive of the supercharger comes off and the coupler is right there. It slides right off and right back on.

You would need
2 Bottles of supercharger oil ~$7 each
1 Small tube of GM red gasket maker ~$3
1 Coupler ~$30

A 10 mm socket on a ratchet and about 1/2-1 hour of time.
BillBoost37 is offline   Reply With Quote
Old 02-13-2006, 06:47 PM   #10
Senior Member
Posts like a Camaro
 
Join Date: Apr 2005
Location: montreal, Canada
Posts: 1,108
Thanks: 0
Thanked 0 Times in 0 Posts
mike_peperni is on a distinguished road
Default

Quote:
Originally Posted by 96SSEi_tampa
I pretty much just have an intake, colder plugs, a cat, and the 3.4" pulley and I run a [email protected] at the track on street tires. Add some slicks or drag radials to get the sixty foots down to ~2.1sec and my car should be around a 14.3.

Be sure to get a scantool to scan for knock retard. Without the help of some toluene to bump me up to 95 octane I could only run a [email protected] because the PCM pulled timing when it saw the knock I was getting one the high end.
i did 14.6 @ 96mph with a 2.1 on 60 foot with street tire.
no way you can get 14.3,not with just 2.1 ( i mean with your setup)
no additive.
mike_peperni is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Need some instruction on pulling an L67 motor out of a 96 SSEi. SSEiPoweredBuick 1992-1999 3 03-05-2009 10:54 PM
Swapping out motor to a Monte Motor, couple ???s STWater 1992-1999 13 01-20-2007 11:48 AM
We need more S1 L67 vids! Bonneville92V688 Your Other Rides: Pics & Videos 13 08-29-2006 10:02 AM
Series 2 L67 Engine cover on a Series 1 L67? DJ SHO Performance, Brainstorming & Tuning 7 07-19-2004 04:39 PM
First 04 MC SS kill? L67 II vs. L67 I! willwren General GM Chat 20 11-15-2003 07:48 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 10:35 AM.


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.