Aftermarket Product ReviewProvide questions and answers about aftermarket parts for the Third Generation F-Body.
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I am in the market (again) for another transmission. I looked at Probuilt, Raptor, and Performabuilt products. I am sick of rebuilding my transmission over and over again so I will be buying a new transmission from one of the companies listed above. I have heard good stuff about Probuilt, Raptor and Performabuilt has nothing but good things said but it seems Performabuilt just doesnt have as many customers as the other two.
I looked further into Performabuilt and talked to one of their employees and I learned they offer a 1 year warranty with their transmissions. This is great because my trans seems to die on me within 8 months or so. The only dilemia I have is that I was getting ready to purchase an Edge Converter and after looking at Performabuilt, I only pay $50 more for their custom converter. Plus there is only a 6 month warranty if i dont use their converter, which is understandable considering another companies product is being used, which could damage their product(not that Edge is a bad company)
My question is if anybody has used Performabuilt Converters and what their experience was with them. I also would like if somebody used another company for one converter and then used performabuilt. I would appreciate it.
That thought did cross my mind, however I do drive the car on the interstate and i do not burn my own chips. I was thinking later down the road when I win the lottery or something, I would convert to the th350 and make it just a drag car.
With 3.23:1 rear gears i don't think a th350 will be a problem at all.
If you have a larger than stock cam in your motor, your th700r4 is not saving you any real gas in OD. Your rpm in OD with 3.23:1 gears is too low to be efficient on the hyway with a motor with a larger than stock cam.
Having been there done that myself i can tell you the cost savings over time of running a th350 as compared to a th700+ the inevable future costs of maintaining that th700 is more than offset by any fuel savings of having over drive. How may times have to fixed/rebuilt that pig trans now?
You'll save more money by driving the speed limit on the hwy.
you could buy a Honda to commute on the hyway with the money you will not have dumped onto a th700 AGAIN...
how many times did u rebuild your 700r4 before you ditch it? With what brand parts? Did you do your own work? BTw the 323's are in the car right now, and have 120kmiles on them. I had bought 373's and new L/S unit and axles to rebuild the rear end.
Now I understand where you are coming from and if it is as easy as you are saying then I might get the th350 but I already have a torque arm i was going to bolt in along with an aluminum DS. Basically I have everything setup for the 700r4.
This is an off the wall question but is the th350 lighter or heavier than the 700r4?
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Quote:
Originally Posted by F-BIRD'88
With 3.23:1 rear gears i don't think a th350 will be a problem at all.
If you have a larger than stock cam in your motor, your th700r4 is not saving you any real gas in OD. Your rpm in OD with 3.23:1 gears is too low to be efficient on the hyway with a motor with a larger than stock cam.
Having been there done that myself i can tell you the cost savings over time of running a th350 as compared to a th700+ the inevable future costs of maintaining that th700 is more than offset by any fuel savings of having over drive. How may times have to fixed/rebuilt that pig trans now?
You'll save more money by driving the speed limit on the hwy.
you could buy a Honda to commute on the hyway with the money you will not have dumped onto a th700 AGAIN...
kinda hard to here in Northern Va.....everybody drives like a maniac and if you dont speed, you get you arse run over
Last edited by 89formula350b2l; 12-02-2007 at 07:48 PM.
Reason: Automerged Doublepost
I have been more than happy with the performance and durability of the TH700R4 in my car. First gear is a little too low, in my opinion. But I don't see why one would take a dump that often unless some real abuse or neglect has been applied. Mine has seen a lot of pin-the brakes-in-first-smoke-the-skins-shift-to-second while it's still smokin'-with the brakes-pinned type of burnouts with no trans failures. Had a Pro-Built street / strip rebuild kit installed at 58K miles to handle future power, but the trans was functioning great before the rebuild. I like it even more now. Unless you really have a TON of power, why not enjoy OD? That's my opinion, yours may be different. Bill
I used mine behind my mild 350 vortec motor for about a year.
Started having trouble with it not shifting into 3rd gear at WOT. had to let off the gas for it to shift. Cleaned and played iwth the valve body and govenor etc etc Supeior shift kit et cetc eventualy it came unglued.
Had my old trusty th350 that my friend burned out high the high gear clutches on when he borrowed it to run behind a 600hp small block. Did the math on what was going to cost to fix. the th350 only needed new clutches to put it right back into service. The th700 had multiple issues. was going to cost three times as much to rebuild with no garantee it would not have the common high gear no shift fault. I was going to a more powerfull 400ci motor so the th700 was jsut not going to work for me. The th350 works flawlessly as it always had. I've owned this trans for some 20+years. Once the th350 2nd gear sprag is upgraded with a heavy duty one they are near indistructable and dirt simple to service if nessessary. Any trans builder can fix this trans with one eye open. Was able to afford a brand new not exctly cheap 3500stall converter too boot.
And still not spend near what the th700 would have cost to fix.
The th350 is a little lighter in weight and takes a little less power to turn.
You'll have to way your options and make your own best decision. After reading about all the continuous headaches and misterious common faults that even pro trans builders seem to have a lot of trouble solving on the th700r4 (especially the early ones) It was a no brainer. I cannot afford to put $1000's into a trans over and over again. My 400 makes BIG block torque and would kill a th700r4 in short order. Sold off the Corvette/iroc hi stall converter as a usable core and junked the 700 trans. No regrets.
Picked up just over 4 tenths seconds in the quarter ET as well.
thats the company i am looking at for a converter but if performabuilt uses good converters too ill gowith them bc its only $50 bucks and 6 mroe months of warranty