L27 Performance Ideas - 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 11-05-2003, 07:16 PM   #1
Senior Member
Posts like a Turbo
Thread Starter
 
Join Date: Oct 2003
Posts: 310
Thanks: 0
Thanked 0 Times in 0 Posts
94Regal is on a distinguished road
Default L27 Performance Ideas

Just look at my Sig

Stock L27 block in my 94 regal. Any ideas for mods? Exhaust/ and throttle body filtering will be done in spring/summer. Those are basic modifications

After reading a very written page on GM'* TPI system, I have realized after 4800, not matter what mods, my engine will never peak higher than that. The fuel system lacks the ability to distribute a proper mixture at higher rpms, and it chokes the engine, which is why all of the L27'* are rated stock at 4800 rpm for peak HP.

Revving any L27 past 5000 rpm is useless. New valves, cam, rockers, and head work done would only further the peak horsepower around 4800. It will remain the current beautiful bottom end block we have all come to love. So I guess you can sum it up in 2 ways.

Pros
-----

1. The Low End Torque Is Here To Stay, Forget About Your Mods
2. An Efficient Highway Driving Car
3. Responds Very Well To Mods
4. Extremely Reliable

Cons
------

1. Choking Issues at RPM >4800
2. Not Fuel Efficient For On and Off Throttle Driving
3. Not an L67
94Regal is offline   Reply With Quote
Old 11-05-2003, 07:20 PM   #2
Senior Member
Expert Gearhead
 
Join Date: Dec 2002
Location: Mississauga, Ontario
Posts: 20,892
Thanks: 0
Thanked 1 Time in 1 Post
Jim W is on a distinguished road
Default

Take a look at what Allmachtige did...granted the Regal and the Bonneville are geared differently and have a different intake/exhaust, but to get educated on what can be done with an L27, he is the MAN
Jim W is offline   Reply With Quote
Old 11-05-2003, 10:20 PM   #3
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

You can do virtually anything I've done except the SC pulley. And I really haven't done much.....yet. Tons of other possibilities. Read the 'first mods' article in Techinfo also.
willwren is offline   Reply With Quote
Old 11-06-2003, 12:06 AM   #4
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

Rockers are always a possibility, new cam is also a big thing, Chips will help a lot. Also rocker springs. Allmachtige has definetly done the most (some of us are broke college kids...).. I have lots of ideas, too.
BonneMeMN is offline   Reply With Quote
Old 11-06-2003, 01:01 AM   #5
Senior Member
True Car Nut
 
Join Date: Oct 2002
Location: Genoa, Illinois
Posts: 4,013
Thanks: 0
Thanked 0 Times in 0 Posts
Allmachtige is on a distinguished road
Default

I'm a broke college kid...I WAS a rich college kid, but then the boss left town with $140,000 and screwed me over for life.

Anyway, this next week I'm gonna setup the Mini AFC 2.0 in my car to get manimum power/efficiency and I'll let you know the results. For starters, do the basics like 180 stat, exhaust, intake (recommend Xstream 4750 filter), and then we talk bigger.
Allmachtige is offline   Reply With Quote
Old 11-06-2003, 04:57 AM   #6
Senior Member
Posts like a Corvette
 
Join Date: Oct 2002
Location: N.W. Indiana
Posts: 1,206
Thanks: 0
Thanked 0 Times in 0 Posts
Roadrash187 is on a distinguished road
Default

Quote:
Originally Posted by Allmachtige
I'm a broke college kid...I WAS a rich college kid, but then the boss left town with $140,000 and screwed me over for life.

Anyway, this next week I'm gonna setup the Mini AFC 2.0 in my car to get manimum power/efficiency and I'll let you know the results. For starters, do the basics like 180 stat, exhaust, intake (recommend Xstream 4750 filter), and then we talk bigger.
Are you just gonna put it on or actually have it tuned?
Roadrash187 is offline   Reply With Quote
Old 11-06-2003, 12:54 PM   #7
Senior Member
Certified Car Nut
 
Join Date: Jun 2003
Posts: 15,928
Thanks: 0
Thanked 0 Times in 0 Posts
BonneMeMN is on a distinguished road
Default

He has an A/F gauge on his pillar, he was telling me all about the mini afc when he as here... I want one... and a chip...
BonneMeMN is offline   Reply With Quote
Old 11-06-2003, 01:28 PM   #8
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

Jet still sells a chip for your car.
willwren is offline   Reply With Quote
Old 11-06-2003, 02:00 PM   #9
Senior Member
True Car Nut
 
Join Date: Oct 2002
Location: Genoa, Illinois
Posts: 4,013
Thanks: 0
Thanked 0 Times in 0 Posts
Allmachtige is on a distinguished road
Default

Bill I called up a million places one day and they didnt have any Jetchips for L27'*...where you finding these chips at?
Allmachtige is offline   Reply With Quote
Old 11-06-2003, 02:01 PM   #10
Junior Member
Posts like a Ricer Type-R
 
Join Date: Aug 2002
Posts: 10
Thanks: 0
Thanked 0 Times in 0 Posts
willwren is on a distinguished road
Default

www.jetchip.com

Go to the source, bud. I'm not sure about your 94, though. 92 and 93 are well supported.
willwren is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
performance ideas King_cobra Performance, Brainstorming & Tuning 2 08-27-2006 03:59 AM
{L27 Performance}...Already did all the common, whats next? Hans Performance, Brainstorming & Tuning 18 05-11-2005 02:05 AM
Is there any performance parts for the L27? Painkiller 1992-1999 8 01-14-2005 05:28 PM
'93 Bonne SE, i need PERFORMANCE IDEAS!! PONBON93LOVA Performance, Brainstorming & Tuning 3 12-23-2003 10:41 PM
ideas ideas....... Delirious0413 General GM Chat 9 12-10-2002 02:19 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 09:48 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.