ClassicOldsmobile.com  

Go Back   ClassicOldsmobile.com > Repair & Restoration > Transmission and Driveline > Transmission
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 March 23rd, 2008, 05:57 PM   #1
Garland
 
Join Date: Mar 2008
Location: Salt Lake City, Utah
Posts: 10
Transmission options for 66 cutlass

I have a 1966 Cutlass with a 330 engine and a two speed Automatic Jetaway transmission. I want to upgrade to a three or four speed tranny, can anyone give me some insight on what options I have. If I buy a TH350 to install does it have to be a certain year, or will any BOP TH350 work? Any help would be appreciated. Thanks
garlandl is offline   Reply With Quote
Old March 24th, 2008, 06:37 AM   #2
Old(s) Fart
 
joe_padavano's Avatar
 
Join Date: Mar 2007
Location: Northern VA
Posts: 15,890
Quote:
Originally Posted by garlandl View Post
I have a 1966 Cutlass with a 330 engine and a two speed Automatic Jetaway transmission. I want to upgrade to a three or four speed tranny, can anyone give me some insight on what options I have. If I buy a TH350 to install does it have to be a certain year, or will any BOP TH350 work? Any help would be appreciated. Thanks
Any short tailshaft TH350 is a bolt-in (and is a popular replacement for the Junkaway). There are two issues you'll have. First, your stock shift quadrant will only have two detents for forward gears, so you'll only be able to manually access drive and second, not first. Second, the TH350 uses a cable kickdown. You'll need to get the bracket and cable from a mid-70s Olds to connect the cable to your carb throttle lever.
__________________
Joe Padavano

62 F-85 Deluxe wagon (the NV desert car)
62 F-85 Deluxe wagon (the San Jose car)
64 Vista Cruiser
64 Jetstar 88 Conv
66 442 L-69 Conv
68 W-30
69 H/O
69 442
70 W-30
72 442
84 Custom Cruiser
86 Caprice wagon (w/307 Olds)
joe_padavano is offline   Reply With Quote
Old March 24th, 2008, 10:39 AM   #3
Registered User
 
Oldsmaniac's Avatar
 
Join Date: Oct 2005
Location: NJ
Posts: 3,920
You can also use a short tail Turbo 400. If the car has column shift you can get the p-r-n-d-s-l indicator from a 67 442 column shift car as the dashes were pretty much identical. Also I believe the Vista Cruiser in 67 had the Turbo 400 trans as an option but finding parts from one of these would be rather difficult. The Turbo 400 doesnt need a cable like the 350 trans. Note you will also need the yoke and possibly the (driveshaft?) from the 442 as the Turbo 400 takes a larger yoke.
__________________




OCA Member 2587
'59 98 conv.
'66 Delta Fact.4spd 375HP
'66 Delta conv.
'67 442 post Trac Pac
'67 Cutlass Supreme TC
'67 442 conv
'67 Cutlass Wagon
'70 Rallye 350
'92 Custom Cruiser

Last edited by Oldsmaniac; March 24th, 2008 at 11:15 AM. Reason: additional info
Oldsmaniac is offline   Reply With Quote
Old March 24th, 2008, 11:30 AM   #4
Old(s) Fart
 
joe_padavano's Avatar
 
Join Date: Mar 2007
Location: Northern VA
Posts: 15,890
Quote:
Originally Posted by Oldsmaniac View Post
You can also use a short tail Turbo 400. If the car has column shift you can get the p-r-n-d-s-l indicator from a 67 442 column shift car as the dashes were pretty much identical. Also I believe the Vista Cruiser in 67 had the Turbo 400 trans as an option but finding parts from one of these would be rather difficult. The Turbo 400 doesnt need a cable like the 350 trans. Note you will also need the yoke and possibly the (driveshaft?) from the 442 as the Turbo 400 takes a larger yoke.
A few problems with this. First, in swapping from a 2 spd to a 3 spd on a column shift, it's not just the indicator that needs to be changed. There is a shift quandrant detent plate in the column that would also need to be swapped out. 67 columns are different from 66 columns and I don't know if you can just change the quadrant (by disassembling the column) or if you would need to swap the entire column.

Second, while you CAN swap in a TH400, the crossmember must move. A 66 will not have the holes drilled in the frame for this crossmember location since the TH400 was not offered in the A-body until 1967. Note that this is especially a problem for the convertibles, since the trans crossmember attaches to brackets welded to the inside of the boxed frame and for 64-66 cars these brackets don't extend far enough back to support the crossmember in the TH400 (or 200-4R) location.

Finally, the TH400 will require a new front yoke and a shorter driveshaft.

None of these items are insurmountable, but (especially for a 330) the TH350 is as close to a true bolt-in as possible.
__________________
Joe Padavano

62 F-85 Deluxe wagon (the NV desert car)
62 F-85 Deluxe wagon (the San Jose car)
64 Vista Cruiser
64 Jetstar 88 Conv
66 442 L-69 Conv
68 W-30
69 H/O
69 442
70 W-30
72 442
84 Custom Cruiser
86 Caprice wagon (w/307 Olds)
joe_padavano is offline   Reply With Quote
Old March 24th, 2008, 11:57 AM   #5
Registered User
 
Oldsmaniac's Avatar
 
Join Date: Oct 2005
Location: NJ
Posts: 3,920
Thanks for the details....I wasnt sure what all was involved but figured it could work and look stock while in the driver's seat.
__________________




OCA Member 2587
'59 98 conv.
'66 Delta Fact.4spd 375HP
'66 Delta conv.
'67 442 post Trac Pac
'67 Cutlass Supreme TC
'67 442 conv
'67 Cutlass Wagon
'70 Rallye 350
'92 Custom Cruiser
Oldsmaniac is offline   Reply With Quote
Old March 25th, 2008, 10:00 PM   #6
Garland
 
Join Date: Mar 2008
Location: Salt Lake City, Utah
Posts: 10
Thanks for the info guys...it will make my rebuild much easier
garlandl is offline   Reply With Quote
Old March 27th, 2008, 05:23 AM   #7
Landyacht Club President
 
Olds64's Avatar
 
Join Date: Jul 2007
Location: Lawton, OK
Posts: 7,336
TH 350 is the way to go. Especially if you don't want to mess with all the stuff Joe mentioned. If you have alot of money to burn you could always check out these guys once you get the TH 350 in.

http://www.gearvendors.com/index.html
__________________
1971 Oldsmobile 98
2011 Ford Flex
Olds64 is offline   Reply With Quote
Old March 27th, 2008, 01:28 PM   #8
Junior Member
 
Join Date: Jan 2008
Posts: 15
If you have a floor shifter, you can use a small metal file and file out enough metal to allow you to grab first gear.
arocars is offline   Reply With Quote
Old March 27th, 2008, 02:47 PM   #9
Old(s) Fart
 
joe_padavano's Avatar
 
Join Date: Mar 2007
Location: Northern VA
Posts: 15,890
Quote:
Originally Posted by arocars View Post
If you have a floor shifter, you can use a small metal file and file out enough metal to allow you to grab first gear.
Actually, if you have a floor shifter, Shiftworks makes a conversion kit for three speed and four speed transmissions:

http://www.shiftworks.com/cutlas.htm
__________________
Joe Padavano

62 F-85 Deluxe wagon (the NV desert car)
62 F-85 Deluxe wagon (the San Jose car)
64 Vista Cruiser
64 Jetstar 88 Conv
66 442 L-69 Conv
68 W-30
69 H/O
69 442
70 W-30
72 442
84 Custom Cruiser
86 Caprice wagon (w/307 Olds)
joe_padavano is offline   Reply With Quote
Old April 3rd, 2008, 02:25 PM   #10
car guy
 
gearheads78's Avatar
 
Join Date: Apr 2008
Location: Dallas TX
Posts: 5,271
All great ideas but the BEST option involves 3 pedals

I will document my TKO 5speed conversion with a factory 4 speed console. Should be in the next month or so.... stay tuned.
__________________
-Richard "If I only had the time, talent and money to build everything in my head....."

66 Cutlass built and gone to new owner
54' 2dr HT future badass






6-25-2010 RIP Chloe Rene Daddy loves you always
gearheads78 is offline   Reply With Quote
Old July 1st, 2008, 06:33 PM   #11
Garland
 
Join Date: Mar 2008
Location: Salt Lake City, Utah
Posts: 10
The car is a stock column shift but I have noticed that I can buy an aftermarket floor shift for around 200 dollars. Would it be better to buy that than trying to convert the column shifter to a three speed?
__________________
1966 Cutlass Convertible
garlandl is offline   Reply With Quote
Old July 1st, 2008, 08:29 PM   #12
car guy
 
gearheads78's Avatar
 
Join Date: Apr 2008
Location: Dallas TX
Posts: 5,271
Quote:
Originally Posted by garlandl View Post
The car is a stock column shift but I have noticed that I can buy an aftermarket floor shift for around 200 dollars. Would it be better to buy that than trying to convert the column shifter to a three speed?
I am going to be using a column from a 66 Lemans. Who makes the 200.00 floor shift column?
__________________
-Richard "If I only had the time, talent and money to build everything in my head....."

66 Cutlass built and gone to new owner
54' 2dr HT future badass






6-25-2010 RIP Chloe Rene Daddy loves you always
gearheads78 is offline   Reply With Quote
Old July 3rd, 2008, 05:50 PM   #13
Garland
 
Join Date: Mar 2008
Location: Salt Lake City, Utah
Posts: 10
B&M offers a few different options for relocating the column shift to the floor anywhere from $120-$300 through Original Parts Group and Year One.
__________________
1966 Cutlass Convertible
garlandl is offline   Reply With Quote
Old July 3rd, 2008, 05:50 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
1987 Cutlass Transmission marcar1993 Drivetrain/Differentials 25 December 10th, 2008 06:23 AM
442 Transmission Options desert442 442 6 March 28th, 2008 01:07 PM
'71 Cutlass Supreme in need of Transmission WasteOfMind00 Transmission 8 February 24th, 2007 10:14 PM
seat options for a 78 cutlass supreme west tenn. 1 Small Blocks 0 May 5th, 2004 04:16 PM
1975 cutlass supreme coupe (hurst options) chkoo7 Transmission 1 August 10th, 2003 10:05 PM


All times are GMT -7. The time now is 11:16 PM.


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