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Username Post: Winter project        (Topic#353765)
Hards..60 
Contributor
Posts: 528
Hards..60
Loc: Northern Ontario,Canada
Reg: 10-20-07
11-04-18 04:47 PM - Post#2750463    

I had my power glide rebuilt a few years ago and installed it two summers ago and it's been nothing short of a pain. It seems to be dragging for some reason and leaks like mad.

So I'm considering a swap over the winter months from a cast iron power glide to some thing like a 2004r or 700r4 or possibly a th350.

Have any of you made a swap....removing the PG and replacing it with something else?

If so would you be willing to share or provide thoughts on this type of swap.

Will/are there issues with mounts, flywheel, starter, driveshaft length, cooler lines or bolt patterns to engine (I have a 348)tunnel clearance ect., ect.

Thanks.

Roger.

1960 Impala 2dr hard top - 348 tri















 




TYTILIDIE 
Gold Supporting Member
Posts: 139
TYTILIDIE
Age: 42
Loc: Colorado Springs
Reg: 10-21-15
11-04-18 07:17 PM - Post#2750475    
    In response to Hards..60

Just my opinion here, I drove my car from Rhode Island to Colorado with the Powerglide, it was brutal. I wouldn't hesitate to do an LS swap with the 4l60e or even 80e. Everything is soooo much better.

1959 Biscayne with Impala Moldings, 5.3l LS Swap, 4l60e trans, factory PCM
1992 GMC Typhoon - Bowtie block and heads, forged everything, PTE76mm Turbo, 4L80E, Stock PCM's

"You'll never get anywhere if you keep starting over".

Me


 
Keith_Knox 
Moderator and "16th Year" Gold Supporting Member
Posts: 6006
Keith_Knox
Age: 77
Loc: Napa, Ca USA
Reg: 04-02-00
11-04-18 07:32 PM - Post#2750480    
    In response to TYTILIDIE

Don't think I would change out the engine. Of course I don't know if adaptors are available for the later transmission, but I would bet they are.

29-41, 42-48, 49-54 Moderator
1948 Chevy Fleetmaster Coupe Purchased 6/2010. Stock with rebuilt 52 216 installed May 1966.
1946 Chevy 1/2 ton pickup, stock. Purchased 11/18/17.
1962 Ranchero Purchased 4/2017 221 V8 Auto. Sold 9/20/18
2013 F150


 
TYTILIDIE 
Gold Supporting Member
Posts: 139
TYTILIDIE
Age: 42
Loc: Colorado Springs
Reg: 10-21-15
11-05-18 04:11 AM - Post#2750488    
    In response to Keith_Knox

There are definitely adapters for all this, you can a whole kit for it. Its just nice not having to dink around with carbs, points and distributors.

1959 Biscayne with Impala Moldings, 5.3l LS Swap, 4l60e trans, factory PCM
1992 GMC Typhoon - Bowtie block and heads, forged everything, PTE76mm Turbo, 4L80E, Stock PCM's

"You'll never get anywhere if you keep starting over".

Me


 
DonSSDD 
Silver Supporting Member
Posts: 6909
DonSSDD
Loc: Nova Scotia, Canada
Reg: 08-21-01
11-05-18 04:31 AM - Post#2750490    
    In response to TYTILIDIE

Tytilidie, blasphemy to remove a 348 for an LS, and he has 3 carbs, you won’t go to heaven if you do that. You will also look much better with a 348 tripower than with anything else.

Lots of kits for this and lots of people have done this swap. Me I’d add a clutch and get rid of all those automatic tranny problems.

63 Pontiac Parisienne Sport Coupe(CDN Chev mechanically (409, 4 speed),62 Bel Air SC (sold), 59 El Camino (sold), 62 Bel Air SC(sold), 63 SWC Vette (sold),
Member #2194


 
Hards..60 
Contributor
Posts: 528
Hards..60
Loc: Northern Ontario,Canada
Reg: 10-20-07
11-05-18 06:00 AM - Post#2750498    
    In response to TYTILIDIE

  • TYTILIDIE Said:
There are definitely adapters for all this, you can a whole kit for it. Its just nice not having to dink around with carbs, points and distributors.



No that won't happen the 348 was also recently rebuilt and I have no issues with it.

Don....blasphemy is the correct word that I would use if I switched to four speed also.

I'm not a fan of four speeds, unless the shifting is automatically done for me.

Who and where can someone get information on these swaps?.....remember I live in Canada, eh.


Roger.

1960 Impala 2dr hard top - 348 tri















 
DonSSDD 
Silver Supporting Member
Posts: 6909
DonSSDD
Loc: Nova Scotia, Canada
Reg: 08-21-01
11-05-18 07:50 AM - Post#2750503    
    In response to Hards..60

Roger, I guess you are too old to operate a clutch?

Search “700r4 transmission on here and on 348 -409 in the 58-64 forums and you should find some guidance. I think the 700 is stronger than the 200, the t350 is an easier swap but you don’t get the od.

63 Pontiac Parisienne Sport Coupe(CDN Chev mechanically (409, 4 speed),62 Bel Air SC (sold), 59 El Camino (sold), 62 Bel Air SC(sold), 63 SWC Vette (sold),
Member #2194


 
Hards..60 
Contributor
Posts: 528
Hards..60
Loc: Northern Ontario,Canada
Reg: 10-20-07
11-06-18 05:54 AM - Post#2750591    
    In response to DonSSDD

Thanks Don, I will check those out.

Roger.

1960 Impala 2dr hard top - 348 tri















 
Hards..60 
Contributor
Posts: 528
Hards..60
Loc: Northern Ontario,Canada
Reg: 10-20-07
11-07-18 04:45 PM - Post#2750706    
    In response to Hards..60

Thought I'd add this.....
I received some very good information from Chevyfan60 that is going to help me out a great deal.

Thanks Michael much appreciated.

Love this site....

Roger.

1960 Impala 2dr hard top - 348 tri















 
Chevyfan60 
"15th Year" Silver Supporting Member
Posts: 954
Chevyfan60
Loc: Longmont, CO
Reg: 04-19-01
11-08-18 10:09 PM - Post#2750847    
    In response to Hards..60

  • Hards..60 Said:
Thought I'd add this.....
I received some very good information from Chevyfan60 that is going to help me out a great deal.

Thanks Michael much appreciated.

Love this site....



You're welcome Roger, just payin' it forward!

Michael
1960 Impala 348, 1960 El Camino (x2), 1960 Nomad, 1992 S-10 Blazer, 2001 GMC Sierra 2500HD,
2002 Trailblazer


 
ragtp66 
Contributor
Posts: 710
ragtp66
Reg: 12-09-07
11-11-18 07:32 PM - Post#2751095    
    In response to Hards..60

Roger,

Just finished up a 700R4 into a 58 Belair that was a PG car. In my opinion I would not bother with a TH350 since there is no overdrive and about all you will accomplish is having a little better trans that won't puke all over the garage floor. The 2004r is another good choice but still requires other modifications. Kind of a coin flip but the gear ratios are a bit different for either OD trans, so you should take into account your current rear end gear, tire size and what you want your end result to be.

Short list of things I had to do for the 700R4

Trans Crossmember kit lots of different sources I chose Truckandcarshop in Orange Ca. But lots of other places. Show-Cars.com, Bowtieoverdrives.com etc.

Cooler lines are available prebent from https://shafersclassic.com/ or Show-Cars and fit like a glove.

Driveshaft needs to be shortened-- can be done locally--be sure to take note that on the front shaft GM puts the u joints 90* OUT of phase make sure you tell your shop to put them the same way when they shorten it and they will probably try to convince you that it is WRONG but it is not GM designed it that way if they are in phase you will end up with a nasty driveline vibration around 30-45mph. If you are running lowered suspension I would highly recommend also doing a slip yoke in the rear shaft. Showcars can help also Inland Empire Driveshafts can take care of you. If you want to upgrade the carrier bearing to the poly/billet unit then definitely do the slip yoke in the rear shaft. The stock carrier bearing is designed to allow the driveshaft to move front to back slightly as the rear end articulates through its travel, when you put in the rigid poly/billet mount the driveshaft can no longer slide in or out of the trans and that is why you need the slip joint in the rear shaft. On lowered cars it exacerbates the problem.

Chris

You will need to get a TV cable setup either Lokar or Bowtieoverdrives will be good choices. TV cable is CRITICAL that it is installed and set properly -not hard but is an absolute must you can destroy your trans if you try to drive it without it hooked up.

You will need a gear shift linkage kit -- Lokar worked good for me. Others have cobbled factory linkage to work. The shift indicator on the steering column is available form several sources.

All in all it is well worth the effort when your done. The car is much more enjoyable to drive and can cruise all day long on the highway. Engine temps run lower it is pretty much a win all the way around.

For your core trans try to find one that is 85-87 with a 30 spline input shaft Those have the better upgrades and are your best choice to start with.

You will need to add a new brake light switch and a little bit of wiring for the lockup converter again Bowtieoverdrives.

If you have a bellhousing mounted starter on the 348 you will need to switch to a block mount, the holes SHOULD be already in the block. The 348 flywheel should be fine.

I would highly recommend at least checking out Bowtieoverdrives.com website if you have any questions call them they are very knowledgeable and will answer any questions you have.


Toys:
1958 Impala 2dr Hardtop Under Construction
1966 Chevelle Malibu Convert M20/350 Aztec Bronze
1987 Sea Ray Pachanga 22
2002 Cadillac Escalade EXT Parts chaser
2007 Trailblazer SS -gone and missed


 
Hards..60 
Contributor
Posts: 528
Hards..60
Loc: Northern Ontario,Canada
Reg: 10-20-07
11-12-18 06:34 AM - Post#2751142    
    In response to ragtp66

Thanks ragtp66.
I'm torn between a 700r4 and a th350 right now. It feels like I've spent a million dollars on this car and still having to spend more. I live in a part of Canada that is away from places like speed shops and parts providers for our cars. I think I can safely say that everything I have bought for this car comes from the U.S. regardless as to whether I bought it from a Canadian supplier or not.

So right now I just want to stop the "bleeding" both money wise and transmission. I tend to believe that a th350 will be easier for me.

Really appreciate the info......undecided....

Roger.

1960 Impala 2dr hard top - 348 tri















 




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