Reply
 
Thread Tools Search this Thread Display Modes
 
Old 09-21-2015, 11:11 PM   #1
2 Rivet Member
 
1988 34.5' Airstream 345
San Francisco , California
Join Date: Sep 2015
Posts: 22
Which Banks Parts?

I just purchased a 1988 345 and want to upgrade it with the Banks Power Pack.

I called Banks, and they identified that I'd need part 49052. It should/would include everything I need EXCEPT a potential extension kit. Any idea which extension kit is required for this particular rig?

Also, would you suggest a muffler shop on the install or mechanic?

Thanks!

PS: Eventually, this one will get Cali smogged.
__________________

__________________
nums is offline   Reply With Quote
Old 09-21-2015, 11:21 PM   #2
3 Rivet Member
 
1968 24' Tradewind
1967 17' Caravel
Northborough , Massachusetts
Join Date: Jun 2015
Posts: 136
I had a Banks on my 95 30'... was very happy with it. I got both perfomance and increased mileage because of fewer downshifts.
I think the extension relates to where you want the exhaust to exit... in front of the rear wheel, behind the wheel, or out the back.
What does the unit currently have?

Chuck
__________________

__________________
cwbiii is offline   Reply With Quote
Old 09-21-2015, 11:31 PM   #3
Rivet Master
 
1982 28' Airstream 280
Redwood City , California
Join Date: Mar 2008
Posts: 1,735
I have the Banks system on my '82 280. If I remember correctly, I think the "extension" is simply another piece of pipe for the longer wheelbases such as the 345. My 280 did not require the extension. No matter what length you have they all exit in front of the drivers side rear wheel. Check out the Banks web site and find the diagram for the proper kit...I believe the diagram shows the extension piece.


Sent from my iPhone using Airstream Forums
__________________
http://projectupdraft.com/airstream

"We are free to go where we wish and to be what we are"
Richard Bach, Jonathan Livingston Seagall
dadstoy is offline   Reply With Quote
Old 09-21-2015, 11:35 PM   #4
Rivet Master
 
1982 28' Airstream 280
Redwood City , California
Join Date: Mar 2008
Posts: 1,735
And it is California smog legal. Mine is registered in calif and I have to get it smogged every other year. Just make sure you attach the CARB sticker on the air cleaner cover. Whether it is my truck or my motorhome, the smog techs call in those numbers every time to verify the mods are legal.


Sent from my iPhone using Airstream Forums
__________________
http://projectupdraft.com/airstream

"We are free to go where we wish and to be what we are"
Richard Bach, Jonathan Livingston Seagall
dadstoy is offline   Reply With Quote
Old 09-22-2015, 12:14 AM   #5
4 Rivet Member
 
TerraYacht's Avatar

 
2005 30' Land Yacht 30 SL
Castro Valley , California
Join Date: Jun 2008
Posts: 335
Even my newer 2005 needs smogging every other year (including sometime in the next couple of months.) Last time was breeze because 4 years ago it would not pass and I had to replace both cat's. perhaps the PO put some bad fuel in it: I only have 20K miles right now. They have never questioned the Banks input or output though.
__________________
Cliff & Andrea,
2 cats, but they stay home
TerraYacht is offline   Reply With Quote
Old 09-22-2015, 12:31 AM   #6
2 Rivet Member
 
1988 34.5' Airstream 345
San Francisco , California
Join Date: Sep 2015
Posts: 22
I did some more digging and found the model and wheelbases from this era (*http://www.airstream.com/wp-content/...acf9884f44.pdf).
270 - 178", 310 - 217", 345 - 224"

Examining the Banks website (Banks Power | 82-95 GM - 7.4L>>PowerPack® System) shows that the 310 and 345 both need the bigger extension kit. The 270 doesn't need one.

So, for my carb version, I think I need part numbers 49052 and 49152.
__________________
nums is offline   Reply With Quote
Old 09-22-2015, 12:42 AM   #7
2 Rivet Member
 
1988 34.5' Airstream 345
San Francisco , California
Join Date: Sep 2015
Posts: 22
answer

49152 and 49052 for carbed 310 and 345
270 doesn't need extension

sources
http://www.airstream.com/wp-content/...acf9884f44.pdf
Banks Power | 82-95 GM - 7.4L>>PowerPack® System
__________________
nums is offline   Reply With Quote
Old 09-22-2015, 01:11 AM   #8
2 Rivet Member
 
1988 34.5' Airstream 345
San Francisco , California
Join Date: Sep 2015
Posts: 22
Thanks for the above. It was helpful.

Based on your comments, I think i need the inside wheelbase not the tag wheelbase. That's 204" on my 345.

That means I need the extension 49150

thanks


http://www.airstream.com/wp-content/...8f36f3c34e.pdf
__________________
nums is offline   Reply With Quote
Old 09-22-2015, 10:30 AM   #9
3 Rivet Member
 
1982 31' Airstream 310
Henniker , New Hampshire
Join Date: Aug 2015
Posts: 132
I just installed kit 49069 with extension kit 49155 on my 82 310. I used the EFI kit because all of my emissions stuff has been removed. I did not want to have to plug the air tube holes on the headers. No smog test required here in New Hampshire, good thing since a the smog pump was long gone before I purchased the motorhome. I was very impressed with the quality of the kit and the fit of the components. I had no troubles installing it myself.

The extension kits are sold based on your wheelbase, just measure the length from the center of the front wheel to the center of the rear axle and pick the appropriate kit. The extension kit allowed my exhaust discharge to be right in front of the rear tires. I had to cut 3-4" off one of the pipes in the extension kit.

I would consider a mechanic instead of the exhaust shop because the kit includes the intake parts and does require some changes to the springs in the transmission shift governor.
__________________

__________________
chiefair is offline   Reply With Quote
Reply


Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Univolt internals - which fuse is which? barts Batteries, Univolts, Converters & Inverters 9 08-13-2017 10:18 AM
Heating and Air Cond. - Which wires are which? trekerboy Electrical - Systems, Generators, Batteries & Solar 12 08-09-2015 09:37 AM
Dump Valves Which is back and which is grey? clicker187 Waste Systems, Tanks & Totes 7 01-16-2013 09:15 PM
Which tank is which? dejahardy13 Fresh Water Systems 8 09-24-2010 10:23 PM
Which switch is which or what 74Sovereign Electrical - Systems, Generators, Batteries & Solar 6 09-10-2002 09:55 AM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 03:31 PM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.