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3800sc with stock 4spd by petehiggins75
Started on: 05-05-2015 09:33 AM
Replies: 4 (162 views)
Last post by: Arns85GT on 05-06-2015 08:16 PM
petehiggins75
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Report this Post05-05-2015 09:33 AM Click Here to See the Profile for petehiggins75Click Here to visit petehiggins75's HomePageClick Here to Email petehiggins75Send a Private Message to petehiggins75Edit/Delete MessageReply w/QuoteDirect Link to This Post
Any ideas for an at home 3800 swap.any input or threads would be great.Im buying an 86 gt sat for awhile.the guy claimed it ran when parked,we'll see but for a grand,you cant go wrong
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Mike Gonzalez
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Report this Post05-05-2015 12:18 PM Click Here to See the Profile for Mike GonzalezClick Here to Email Mike GonzalezSend a Private Message to Mike GonzalezEdit/Delete MessageReply w/QuoteDirect Link to This Post
What kind of Ideas are you looking for? I woulldnt use the 4 speed though. All the info you need for thee swap can be found on here, probably the best documented swap done.
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Dennis LaGrua
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Report this Post05-05-2015 01:10 PM Click Here to See the Profile for Dennis LaGruaClick Here to Email Dennis LaGruaSend a Private Message to Dennis LaGruaEdit/Delete MessageReply w/QuoteDirect Link to This Post
As per a conversation I once had with an engineer at the GM Muncie plant, he reported that the Fiero transmission was designed for a maximum torque of 200 ft. lbs. The 3800SC puts out more torque than the design limits. The transmission may last for around town use , trips and occasional full throttle use so determine how you will use your powertrain and then choose the parts. With the stick you will also need a HD clutch but keeping the 4 speed does greatly simplify the swap.

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" THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Flotech Afterburner Exhaust, Autolite 104's, MSD wires, Custom CAI, 4T65eHD w. custom axles, 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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FIEROFLYER
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Report this Post05-06-2015 10:47 AM Click Here to See the Profile for FIEROFLYERSend a Private Message to FIEROFLYEREdit/Delete MessageReply w/QuoteDirect Link to This Post
Personally I have seen the V6 4 speed with its 365 gears out last the 5 speed Getrag that came in the Fiero abuse wise, around town and light to light the 4 speed gears are a nice match to the 3800SC power but the higher rpm on the highway does cost a lot of extra fuel if you travel long distances
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Arns85GT
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Report this Post05-06-2015 08:16 PM Click Here to See the Profile for Arns85GTClick Here to Email Arns85GTSend a Private Message to Arns85GTEdit/Delete MessageReply w/QuoteDirect Link to This Post
Exactly, the 4 speed Muncie from the 95/96 is the strongest tranny, capable of handling v8s. I have 265 ft lbs running through mine and it takes it in stride.

The Gehtrag is not quite as strong, but it breaths better on the freeway speeds. There are SBC conversions that have broken the Gehtrag.

The 3800sc is a screamer so it will go like stink with the 4 speed.

Arn

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