ClassicOldsmobile.com  

Go Back   ClassicOldsmobile.com > Oldsmobile Classifieds > Parts > Parts For Sale
Sign in using an external account
Register Forgot Password?
Search

Welcome to Classic Oldsmobile Forum!
Welcome to Classic Oldsmobile forum,

You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to start new topics, reply to conversations, privately message other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, join Classic Oldsmobile Forum today!


Reply
 
 
 
submit to reddit
 
LinkBack Thread Tools Search this Thread Display Modes
Old November 7th, 2008, 04:37 AM   #1 (permalink)
Moderator
 
Jamesbo's Avatar
 
Join Date: Jun 2008
Location: Atlanta, Georgia
Posts: 9,489
L-69

I normally don't promote auctions but this is such a rare critter, I thought I'd make an exception

http://cgi.ebay.com/ebaymotors/1966-...1%7C240%3A1318

Behold a 1966 Mondello purple L-69 with carbs
Attached Images
File Type: jpg tri power.jpg (8.8 KB, 25 views)
__________________


69 H/O burnt to a crisp 9/4/2010
69 442 convertible
69 Vista Cruiser
69 442 hardtop gone to a new home

"Growing old is mandatory,Growing up is optional"
Jamesbo is offline   Reply With Quote
Old November 7th, 2008, 05:33 AM   #2 (permalink)
Moderator
 
citcapp's Avatar
 
Join Date: Nov 2007
Location: Bothell, WA
Posts: 8,826
Quote:
Originally Posted by Jamesbo View Post
I normally don't promote auctions but this is such a rare critter, I thought I'd make an exception

http://cgi.ebay.com/ebaymotors/1966-...1%7C240%3A1318

Behold a 1966 Mondello purple L-69 with carbs

I see this is for a 400, Would it fit a 455 that I am going to install in my 1948 Olds Sure would look cool. It is a retro with a 5 speed stick.
citcapp is offline   Reply With Quote
Old November 7th, 2008, 05:57 AM   #3 (permalink)
Moderator
 
Jamesbo's Avatar
 
Join Date: Jun 2008
Location: Atlanta, Georgia
Posts: 9,489
I will defer to the experts like Joe, Norm and other learned folks.

Rare unquestionably,

Yes, it looks cool, but my "local experts" aren't particularly fond of the L-69 or the "Goat" Tri-power.

They say [But like Joe has pointed out,"They say alot"]

It's not so hot performance wise.

Please, let's not turn this into a fist fight.

Ya know what they say about "opinions."

But I would look forward to an informative discussion of the +/- of this very unique Olds carb set up.
__________________


69 H/O burnt to a crisp 9/4/2010
69 442 convertible
69 Vista Cruiser
69 442 hardtop gone to a new home

"Growing old is mandatory,Growing up is optional"
Jamesbo is offline   Reply With Quote
Old November 7th, 2008, 07:59 AM   #4 (permalink)
"me somebody" site member
 
aliensatemybuick's Avatar
 
Join Date: Jul 2007
Posts: 1,352
The purple may be an illusion//perhaps its bronze. And of course it will fit any "modern" Olds big block (early/late 400...425...455). A few things look odd, though...the "erector set" looking linkage on the driver's side that extends form the center carb to the rear for example...also the center carb may be missing a bowl vent "flapper" on the air horn (towards front right).

In my opinion, the tri-carb setup is all about being "flashy" when popping the hood at a car show...not that there's anything wrong with that!

ON EDIT: The linkage may be correct, just disconnected somehow, allowing it to flip back towards the rear carb (which it should not), see pic below which also shows the vent device on the carter carb air horn:

Click the image to open in full size.

Last edited by aliensatemybuick; November 7th, 2008 at 08:10 AM.
aliensatemybuick is offline   Reply With Quote
Old November 7th, 2008, 10:18 AM   #5 (permalink)
Junior Member
 
88 coupe's Avatar
 
Join Date: Oct 2004
Location: Southern CA
Posts: 2,211
Seller says all three carbs have the same part number. Shouldn't the center (primary) carb have idle circuit and choke, not the end carbs?

Quote:
Originally Posted by Jamesbo View Post
........ my "local experts" aren't particularly fond of the L-69 or the "Goat" Tri-power ........
Q-jet (750 CFM) is probably a better street setup, but the car wasn't meant for street use. They needed closer to 900 CFM and, as long as "street manners" was not a high priority, three 2 barrels was an easy way to get it.

I've found that 900 CFM works very well on 425 Olds engines.

Norm
88 coupe is offline   Reply With Quote
Old November 7th, 2008, 11:30 AM   #6 (permalink)
"me somebody" site member
 
aliensatemybuick's Avatar
 
Join Date: Jul 2007
Posts: 1,352
Front and rear carbs appear to lack chokes or idle circuits. Only the center carb has a tag (on wrong spot, i.e. on the backside), which presumably has the carb number the seller referred to.

Inneresting take on CFM on the similar pontiac tri-powas here:

http://www.pontiactripower.com/pontiac/FAQ.shtml#8
aliensatemybuick is offline   Reply With Quote
Old November 7th, 2008, 12:13 PM   #7 (permalink)
Moderator
 
Jamesbo's Avatar
 
Join Date: Jun 2008
Location: Atlanta, Georgia
Posts: 9,489
Quote:
Originally Posted by 88 coupe View Post
"street manners"

Norm
Thanks Norm,

I assume bad "Street Manners" would be a negative, Could you elaborate on what one could expect in terms of Bad "street manners" from a L-69 and why?
__________________


69 H/O burnt to a crisp 9/4/2010
69 442 convertible
69 Vista Cruiser
69 442 hardtop gone to a new home

"Growing old is mandatory,Growing up is optional"
Jamesbo is offline   Reply With Quote
Old November 7th, 2008, 09:14 PM   #8 (permalink)
"me somebody" site member
 
aliensatemybuick's Avatar
 
Join Date: Jul 2007
Posts: 1,352
Having owned a tri-carb car, I am unaware of any driveability issues with the setup. Basically its a 2 bbl car till you whomp on it. And then it sounds like the Batmobile. Excellent part throttle response, and as long as you configure the "blockoffs" to allow heat to the center carb, it'll warm up fast in cold weather.
aliensatemybuick is offline   Reply With Quote
Old November 8th, 2008, 12:19 AM   #9 (permalink)
Junior Member
 
88 coupe's Avatar
 
Join Date: Oct 2004
Location: Southern CA
Posts: 2,211
Quote:
Originally Posted by aliensatemybuick View Post
........ which presumably has the carb number the seller referred to ........
Quote:
Originally Posted by Bud Ward's Antique Cars
........ 3 Rochester 2 BBL Carbs part number 7026056 ........
Must be a typo.

Quote:
Originally Posted by aliensatemybuick View Post
........ I am unaware of any driveability issues with the setup ........
How was your fuel mileage, compared to that of a Q-jet?

Norm
88 coupe is offline   Reply With Quote
Old November 8th, 2008, 12:44 AM   #10 (permalink)
Junior Member
 
88 coupe's Avatar
 
Join Date: Oct 2004
Location: Southern CA
Posts: 2,211
Quote:
Originally Posted by Jamesbo View Post
........ what one could expect in terms of Bad "street manners" ........
Did anyone say anything about "Bad" street manners?

Quote:
Originally Posted by 88 coupe View Post
........ as long as "street manners" was not a high priority ........
The car was not supposed to drive like a 98.

Norm
88 coupe is offline   Reply With Quote
Old November 8th, 2008, 07:19 AM   #11 (permalink)
Moderator
 
Jamesbo's Avatar
 
Join Date: Jun 2008
Location: Atlanta, Georgia
Posts: 9,489
Quote:
Originally Posted by aliensatemybuick View Post
Having owned a tri-carb car, I am unaware of any driveability issues with the setup. Basically its a 2 bbl car till you whomp on it. And then it sounds like the Batmobile. Excellent part throttle response, and as long as you configure the "blockoffs" to allow heat to the center carb, it'll warm up fast in cold weather.
Thank you, That answers the question I evidently posed incorrectly.
Glad someone could comprehend what I was trying to say.
__________________


69 H/O burnt to a crisp 9/4/2010
69 442 convertible
69 Vista Cruiser
69 442 hardtop gone to a new home

"Growing old is mandatory,Growing up is optional"
Jamesbo is offline   Reply With Quote
Old November 8th, 2008, 08:53 PM   #12 (permalink)
"me somebody" site member
 
aliensatemybuick's Avatar
 
Join Date: Jul 2007
Posts: 1,352
Yeah. Good thing I sold that L69 car too; I couldn't sleep nights worrying about the mileage that thing got!
aliensatemybuick is offline   Reply With Quote
Old November 9th, 2008, 06:38 AM   #13 (permalink)
Moderator
 
citcapp's Avatar
 
Join Date: Nov 2007
Location: Bothell, WA
Posts: 8,826
I was interested until the bidding exceeded $1,800.00 for the set up. I will be happy with a 4-barrel in my 1948 Olds. This stuff goes for out of site prices. Does someone make a after market tri-carb manifold for an Olds 455 (Norm you will notice I stated tri-carb). I think it would fit the look I am going for.
citcapp is offline   Reply With Quote
Old November 11th, 2008, 11:02 AM   #14 (permalink)
Registered User
 
442garage's Avatar
 
Join Date: Aug 2008
Location: Goldbar, Wa. 98251
Posts: 270
Quote:
Originally Posted by citcapp View Post
I was interested until the bidding exceeded $1,800.00 for the set up. I will be happy with a 4-barrel in my 1948 Olds. This stuff goes for out of site prices. Does someone make a after market tri-carb manifold for an Olds 455 (Norm you will notice I stated tri-carb). I think it would fit the look I am going for.
Citcapp,

The Parts Place, from time to time has been offering an opportunity to bid on a reproduction of the AU L69 manifold on E bay. I don't know if they actually have any units for sale yet. Run to Rund can verify this, but I believe this isnt your best choice for a tricarb manifold. The most desirable and the one I have is the later AZ manifold with the larger center carb mounting pad. Some individuals seem to feel that this is a poor choice for a performance manifold, especially for the street, but I am a stubborn non conformist, and I like the looks and accept the compromise in performance.
Attached Images
File Type: jpg 055.jpg (73.3 KB, 13 views)
442garage is offline   Reply With Quote
Old November 11th, 2008, 06:45 PM   #15 (permalink)
Registered User
 
Join Date: Mar 2008
Posts: 2,676
Except for full race setups, the TriCarbs are about the best, imho. I tested them back to back vs. 800 spread bore Holley/torker in 1975 and the TriCarbs were better by a tenth or two on the strip. Just like a rochester 2 Jet most of the time, and then you go up to 850 cfm on the four barrel rating scale with three accelerator pumps. not at all bad for someting designed well over 40 years ago. AZ is the best version because the center carb pad is bigger, sealing the vacuum passage better. The Service Guild bulletin of Feb 66 said to use Permatex #1 to help seal the base gasket on the AL and AU versions, although they did not identify the castings.
Run to Rund is offline   Reply With Quote
Old November 11th, 2008, 06:45 PM
ClassicOldsmobile
1957 Oldsmobile




Paid Advertisement
 
 
 
submit to reddit
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

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 -7. The time now is 03:55 AM.


Advertising - Privacy Statement - Terms of Service - Jobs
All content Copyright 2008 by Internet Brands, Inc.

Search Engine Friendly URLs by vBSEO 3.5.2

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62