|
|
01-28-2012, 08:13 PM
|
#1
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
Trans Questions Part Duex
Ok, still up in the air about the trans I wanna throw behind the new engine.
Options are, 4L60E, 4L80E, TH400, or TH400/GV combo
Option 1: 4L60E costs $2925 with a 2 year warranty, and would require just a reflash of current converter. Downside is, google fast cars with 4L60Es and, you do not see many, if any at all. They are not meant to be raced and this is a factor in my choice. Upside is, it would obviously bolt right up and require no mods.
Option 2: 4L80E costs $2200 for a 1 year warranty, and would require a trans crossmember at $170 and a new converter at $845. OR, a full "kit" which covers all the stuff I need to swap it in for $3500 and also gives a 2 year warranty. The trans can handle more than I plan on throwing at it, and comes standard with a T brake, BUT, will require cutting/BFH mod to the trans tunnel.
Option 3: TH400 costs $2500 with no warranty(local used unit) but would come with everything I need to bolt in and go. Converter would need to be restalled. Upside it would also handle anything I throw at it but, I lose OD and lock up.
Option 4: TH400 with GV unit, not really a practical option as it would cost well over 5k to and I could easily just do a 4L80E for less.
So, at this point I am wondering how much value I place in lock up and OD in the trans. Granted cars came with 3 speed transmissions well before this so it can be done, just curious how people would feel in this situation given the options.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 07:42 AM
|
#2
|
Lord of the rings / 10 Second Club / Meet Coordinator
Join Date: Aug 2004
Location: Millstone Township, NJ
Posts: 6,353
|
You've stated the options but didn't mention your intentions with the car.
Based on our convos I would go 4L80E for the following reasons:
- sounds like it's overkill but I think that's a good thing.
- if you sold the converter you have, you would be close in price to the built 4L60E
- you would have OD
- taking a hammer to your car would be worth it for all the benefits
- I assume this would be a new unit rather than a used TH400 (told me never buy a used trans)
__________________
97 T/A Ram Air Convt
Forever dyno queen / 777rwhp 662 rwtq @ 17lbs / 10.2 @ 140
'24 Corvette Z06
17 Sierra 2500HD Dmax
81 Turbo TA
|
|
|
01-29-2012, 08:02 AM
|
#3
|
Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
|
Usage is key, absolutely.
Do you really need a lot of floor massaging for that? (not saying you are wrong, just asking). I know that trans slips into a lot of older cars w/o issue. Just as a for instance the t56 in my 77 required all sorts of surgery, but a 4L80E in a 2nd gen appears to require none. I have seen on some older cars some fairly minor floor hammering depending on which 4L80E you get as the coolant lines were relocated at one point.
th400 vs 4L80E
My $0.02 is if it is a street car that gets driven more than 20 minutes go 4L80E. If it is just a drag car getting towed then th400.
I have not checked prices, but $2500 for a used TH400 seems steep to me unless you know the whole history of that trans.
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
|
|
|
01-29-2012, 08:05 AM
|
#4
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
You need to cut a port for the wire harness going into trans, ears need to be cut off the trans and a few select areas need to be massaged.
So I guess you guys are implying that driving highway stuff without OD/lockup will get old fast?
And BLS, this is for a friends project
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 08:18 AM
|
#5
|
Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,673
|
Does the 4l80e come with a stand alone computer for that price? If so, that seems like a good deal to me. What is the HP rating? Have you see what is involved with the hump surgery? I wouldn't be opposed to cutting and welding if I owned your car. Provided it is done properly.
__________________
John
|
|
|
01-29-2012, 08:21 AM
|
#6
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
No, the trans would bhe controlled via the PCM. Trans is rated at 750hp
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 08:50 AM
|
#7
|
Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
|
Quote:
Originally Posted by LTs1ow
You need to cut a port for the wire harness going into trans, ears need to be cut off the trans and a few select areas need to be massaged. Child's play, IMO a non-issue.
So I guess you guys are implying that driving highway stuff without OD/lockup will get old fast? Yes. Come for a ride in my car this spring. I'll drive in 4th for a while, then go to 5 & 6. You decide
|
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
|
|
|
01-29-2012, 09:40 AM
|
#8
|
Ayatollah of Rock N Rolla / Admin
Join Date: Mar 2006
Location: Parts Unknown
Posts: 12,573
|
Matt:
I don't know if this is still the plan but you mentioned that you would be running 3.08 gears in your rear axle, so I'm just gonna throw that out there.
Personally I'd go 4L80E without much thought. TH400 with a GV is nice but that's basically a 4L80E anyway.
And to be honest, fab work will be required when you are throwing around some decent chunks of change and looking to go out of the normal "zone" like this. And unless it's really minor clearancing I'd look to cut and weld over a lot of hammering. Do it nice the first time.
|
|
|
01-29-2012, 11:24 AM
|
#9
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
I may bump it to a 3.42 gear set, but with OD, at 75mph thats roughly 2300rpm, which you can't beat.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 11:31 AM
|
#10
|
Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
|
Just to let you know, in your application, engine load is a must!!! OD trans has been proven to work, But T400 w/3:08 gears works exceptionally well.
__________________
Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
|
South Jersey Racecraft
|
|
|
01-29-2012, 11:33 AM
|
#11
|
Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,673
|
Are you going with an LT1 Boost kit?
__________________
John
|
|
|
01-29-2012, 11:34 AM
|
#12
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
Yea I know Curt, hence the lower gear set, 3.08/3.23 pending rear end brand and available gear sets
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 11:47 AM
|
#13
|
The Mayor / 2009 Member of the Year / Moderator
Join Date: Jan 2005
Location: Northwest
Posts: 8,859
|
4L80E. You drive your car a lot (when it works).
__________________
1995 Z28 Convertible A4 13.78 @ 100 (CAI, high flow cat, catback, 160 thermo, hypertech, Strano springs, Koni yellows, sway bars, 3 pt. UMI SFC)
2018 Sea Doo GTX - 3 cylinders and das boooooost
Quote:
Originally Posted by BonzoHansen
Is English your 2nd language? Did you graduate high school? Your posts make my head hurt.
|
Team FARM
|
|
|
01-29-2012, 12:44 PM
|
#14
|
Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
|
Quote:
Originally Posted by Featherburner
Are you going with an LT1 Boost kit?
|
Matt.... ummm I have a T400 just hanging out here on shelf. I was going to use it my car, I just cant persuade myself to give up rowing gears. I'll give ya a screaming deal on it.
__________________
Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
|
South Jersey Racecraft
|
|
|
01-29-2012, 12:46 PM
|
#15
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
I just am not sure whether I am able to give up OD and highway cruising yet Curt, gotta call a builder tmmr and I will let you know.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 12:49 PM
|
#16
|
Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
|
T400 & 3:08's are perfect, nice cruising on highway. Ask a couple FI guys on tech.
My Brother has T400 with 3:23's in his 02 WS6 and goes down GSP with it from howell to my house all the time. But I like the 3:08's a bit better due to lower rpms at 70-75mph
__________________
Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
|
South Jersey Racecraft
|
|
|
01-29-2012, 12:52 PM
|
#17
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
How is his rpms around town, red light to red light though?
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 02:49 PM
|
#18
|
Meet Coordinator
Join Date: Jan 2008
Location: brick/pt. pleasant beach
Posts: 19,341
|
th400 will be quicker racing too....
|
|
|
01-29-2012, 03:03 PM
|
#19
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
He is not building a full out race car though, so that won't really matter all that much.
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 03:31 PM
|
#20
|
Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
|
N/A Ls2 motor 534hp t400 3:23's runs around 2900-3000 rpms @ 70+mph
Turbo'ed t400 3:08's ran 2600-2700 rpms @ 70+mph
neither one was bad at all from red light to red light.. try it with a stock motor and sure it will be a dog.
I believe both were with a 28" tire
YOU DONT NEED GEAR FOR A TURBO CAR!!! The lower the gear the better in most cases.
__________________
Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
|
South Jersey Racecraft
|
|
|
01-29-2012, 03:33 PM
|
#21
|
Join Date: Jul 2009
Location: barnegat nj
Posts: 1,340
|
Quote:
Originally Posted by sweetbmxrider
th400 will be quicker racing too....
|
Also cheaper for parts, more reliable, & can withstand more HP than a A4
p.s. if you only want to spend your money once & have room to grow (hp wise)
1) spend a buttload on a 6l80e setup
2) spend less than half w/t400 & 3:08's
or....
you can spend a buttload on T56 and keep dumping $ into it like me....
__________________
Quote:
Originally Posted by SRGN
I never pulled into the staging beams at the track and saw a dyno in the other lane.
|
South Jersey Racecraft
Last edited by S.J.SLEEPER; 01-29-2012 at 03:37 PM.
|
|
|
01-29-2012, 03:41 PM
|
#22
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
a 6l80E Curt?
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 04:41 PM
|
#23
|
Join Date: Jun 2007
Location: Arm pit of the world... NJ
Posts: 2,673
|
Quote:
Originally Posted by S.J.SLEEPER
|
I was asking because Fastbird made over 750 hp with one of his kits.
__________________
John
|
|
|
01-29-2012, 04:43 PM
|
#24
|
Mongo the Meet Coordinator
Join Date: May 2008
Posts: 16,896
|
Quote:
Originally Posted by Featherburner
I was asking because Fastbird made over 750 hp with one of his kits.
|
In a manual, with a ton of meth and really pushing the poor 76gts
__________________
Quote:
Originally Posted by KirkEvil
repo bigals turd gen and part it out to a loving home
|
|
|
|
01-29-2012, 04:44 PM
|
#25
|
Admin.
Join Date: Aug 2005
Location: Hamilton, NJ
Posts: 20,149
|
6L80E has no after market controller, and is tall & low so it presents packaging issues. It is not yet proving to be a good retrofit trans for the masses.
A 4L80E will let you run better rear gears and is as strong as a th400. Best of both worlds. It's a beast, it's a TH400 with 4th gear. IMO that is doing it once & right
If you do a TH400 you can probably add a gear vendors are a later date. But often later never comes.
Who is the car for?
"I may bump it to a 3.42 gear set"
"I just am not sure whether I am able to give up OD and highway cruising yet"
"He is not building a full out race car"
Now we are into gear selection, etc. Is it a turbo car? What is the total application? Is it a street car or race car? How many street miles a year on it? What is the engine RPM range?
__________________
Vent Windows Forever!
The looser the waistband, the deeper the quicksand. Or so I have read.
Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.
Hey everybody, it's good to have you on the Baba-too-da-ba-too-ba-ba-buh-doo-ga-ga-bop-a-dop
|
|
|
Posting Rules
|
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts
HTML code is Off
|
|
|
|
|
|