1991camaro_rs

Hey guys, just a quick update before i get to the questions my wifes trans am is running great finally. Turned out the o2 extensions were absolutely not even spliced, all he did to get our car out of the shop was cut them and electrical tape them together GO FIGURE hahaha new o2's and some proper extensions and its fine and kicks *** she loves it... anyway

i was looking at some th350's or 400's because my trans is dying i do believe, and right after the converter swap HA. what im curious is
1.Who makes a mount for this swap.
2.is it really involved, or should i just get another 4l60e
3.Is it worth it, and what all do i need to do this swap.

Thanks guys for all the info!!!

RamAir95TA

iTrader: (2)

http://www.streetlethal.net/trans/

1991camaro_rs

Thank you!

TravisMcGill2000

iTrader: (2)

Lookin into performabuilt 4l60s. Ive been 6.7s in 1/8 with no problems. Id only do th400 if mainlt track inly.

quik95lt1

iTrader: (7)

doing a th350 in mine right now.......seems pretty simple......if you run a 9" tailhousing its the same length as the 4l60e so you can keep your driveshaft....shifter is a simple thing also.......as far as I can see all I gotta do to the mount is move the mount hole forward about .75" I welded up the original hole in the bmr mount I have and welded a plate to the bottom of the one that was there then just redrilled in the right spot.......actually stronger than it used to be and it fits fine...

myltwon

iTrader: (1)

What he said on the tailhousing for the th350

Basically dollar for dollar (trans alone) the TH400 will be stronger but take more power to turn. Also TH350s have a little steeper gearing typically and you can find TH350's with convertor lockup.

96capricemgr

iTrader: (1)

forget that idea unless a dedicated drag car.

TSAEB

iTrader: (5)

just wondering. Why did you decide on the tranny swap?

96capricemgr

iTrader: (1)

For him there are a lot of potential lightweight upgrades and such for his pretty max effort car, even as he does it I am sure he wouldn't suggest someone with a modest street car even consider such a thing.

quik95lt1

iTrader: (7)

^ what he said.....for a street car I would've never ditched my 4l60e....but for me it allowed me to get the right converter in my car finally, it gave me a taller first gear so it will come out of the hole more in control and it took my 3275lb raceweight and put me around 3150.......no to mention I finally got a real shifter in the car so no more misses and all the lost rotating weight from all the alum parts in the th350..........for me it was a no brainer....

96capricemgr

iTrader: (1)

A friend did a race th350 a couple years ago and with all the fancy light parts the thing weighed nothing and was like a 20someodd lbs reduction in rotating weight even from a stock TH350 which I would assume is lighter internally than a 4L60E since there is less going on.

I get what you are saying about first too. The 3.06 first in a 4L60E is great for a street cars with modest stall and such but once making real power with a lot of stall you can't really use it.

Ed Wright

iTrader: (1)

If your car makes any power, and hooks worth a damn, that 3.06 first gear can be hard to deal with. Such a narrow window between tearing the bumper off and blowing the tires off. It 's a constant adjustment deal. First pass of the day can be very interesting.

If you like scraping up VHT with the back bumper and shifting while looking at the sky, it 's the hot setup. Fun, but not the quickest way down the track.

A properly built T350 will handle anything 99% of you guys can throw at it. Lots of seven second Comp Eliminator cars running them with zero problems. Hardly anybody uses a T400.

quik95lt1

iTrader: (7)

that was my issue, it would blow through first so fast it be 3 feet in the air while I was shifting second gear....soon as it went into 2nd it'd come down hard cause it didn't have the power to pull it......looks cool but as you said........not the fastest way at all

Ed Wright

iTrader: (1)

I don't know how to post it here, but I have a picture of mine way out in 2nd gear, still dragging the bumper. Came down on the 2>3 hift. Not enough ***** to keep it up in high gear. LOL

quik95lt1

iTrader: (7)

I never had the ***** to come out that hard and stay in it that far ed lol I only came out at about 2400 on the footbrake lol

Ed Wright

iTrader: (1)

Just watch the guard rail, or center line out the side window, depending on which lane your in. As long as it's going straight it's cheaper to stay in it. Hard landings can get expensive.

TSAEB

iTrader: (5)

thanks for the info guys.. what would be the issue for guys who drive there cars on the street occasionally? not really a dd but lets say just for the weekend cruise or drive up to the track rather then trailer it?

1991camaro_rs

I was reading some good things about the th350 being able to take a ton of abuse while being mildly built thats why i was thinking that. If i could find a good deal on some built 4l60e's then i would get one, also not to mention the price for a built th350vs4l60e. Any suggestions on were to get a well built 4l60e?