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| Best Automatic Transmission for Fiero (Page 1/2) |
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Reborn756
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MAR 17, 06:57 PM
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Howdy folks, thanks for having me on your forum!
as a preface here to my question, I'm a former 3rd gen TA guy that's finally decided to come to the Fiero side (still looking for a car, want an 88 Formula). I sold my Trans Am last year to pay for my truck (needed something better for PA Winters), but a year without a fun car has killed me. I decided I wanted something with some cornering capabilities, and being a Pontiac fan, decided the Fiero was my best bet!
I've always had hard, fast shifting, whiplash inducing automatic transmissions. While I don't expect the same thing from the Fiero, I want the best I can get.
So, onto my question: What is the best automatic transmission I can build for a Fiero, that is easy to swap in (even with the stock 2.8L V6)? What are my best options for rebuild and hard hitting shift kits for these transmissions? Does anyone know any secret hop-up techniques for an applicable transmission? For example, my Uncle Doyle plugs a fluid passage in the TH-350 and TH-400 valve bodies to REALLY make them slam into gear fast and hard.
We are fully capable of doing a rebuild on our own.
Thanks in advance folks!
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- Darryl[This message has been edited by Reborn756 (edited 03-17-2020).]
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Dennis LaGrua
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MAR 17, 08:17 PM
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With a stock 2.8L or 3.4L I would use a 4T60 transmission with the axles that can fit your car. . Its has four speeds, easily bolts right up and only requires minor wiring changes to the TCC . Performance shift kits are available and not difficult to install. ------------------
" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman Exhaust, P-log Manifold, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, Champion Radiator, S10 Brake Booster, HP Tuners VCM Suite.
"THE COLUSSUS"
87GT - ALL OUT 3.4L Turbocharged engine, Garrett Hybrid Turbo, MSD ign., modified TH125H
" ON THE LOOSE WITHOUT THE JUICE "
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Reborn756
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MAR 17, 09:14 PM
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Thanks for the quick reply Dennis! Where can I find information regarding the TCC wiring?
happy to hear about it being a direct bolt in, that's what I was looking for!
Do you have any information on the best rebuild kits and shift kits are for this transmission? We normally using Transtar and No-Yo-Yo kits. What vehicles and years are suitable donors for the transmission?------------------
- Darryl
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olejoedad
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MAR 18, 12:22 AM
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I second the 4T60.
I think the Georgia Fiero Club website has a page on the swap that would help.
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fierosound
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MAR 18, 12:53 AM
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Reborn756
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MAR 18, 10:23 AM
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Thanks for all the information so far fellas, I'll check that Georgia club site and that link there! ------------------
- Darryl
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Blacktree
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MAR 18, 12:22 PM
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If you're using a stock Fiero engine, or something from the same era, then the 4T60 (aka TH440) is probably your best bet. For engines with more advanced electronics, the 4T65-E would be a better choice.
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Reborn756
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MAR 19, 12:14 PM
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Thanks BlackTree! Anyone have recommendations on the best shift kits and modifications, and rebuild kits? ------------------
- Darryl
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TT Slick
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MAR 19, 12:58 PM
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Go to: Fiero th440-4t60 automatic transmission conversion.
I can't figure out how to post it here. I'm BC.
Good Luck
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Cunnive
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MAR 20, 03:16 PM
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Anyone got a recommendation on where one would find/buy one of these transmissions? This is all a first for me so I am not sure where to look outside of googling it.
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