TurboTec’s 85GT LS4 build thread
Printed From: West Coast Fieros
Category: Technical Topics Forum
Forum Name: Build Threads
Forum Description: A Place to post step by step build threads.
URL: http://www.westcoastfieros.com/forum/forum_posts.asp?TID=3594
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Topic: TurboTec’s 85GT LS4 build thread
Posted By: TurboTec
Subject: TurboTec’s 85GT LS4 build thread
Date Posted: 10 February 2015 at 6:58pm
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Hello All, this thread will document a LS4 swap into my '85 GT. The engine and transmission was a complete dropout from a 2006 Impala SS with 41K
A list of mods planned goes something like this: DOD Delete, LS7 lifters and ZO6 camshaft with Patriot gold valve springs Custom built Intercooler and radiator with trans cooler by IRCFabrication Magnashift tranmission controller and Microsquirt fuel control Stock LS4 exhaust with T66 turbocharger This project has been on hold (In Storage) for a few years as I've moved countries, across the content from New York to Alberta Canada. Its been almost 2 years in Canada and normal is starting to return to our daily life. The car is in transit as I type and I hope to be continuing my LS4 Fiero build soon. |
Replies:
Posted By: TurboTec
Date Posted: 10 February 2015 at 8:25pm
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Posted By: beken
Date Posted: 11 February 2015 at 1:26pm
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That's a nice looking car. Can't wait to follow your
build. -------------  Beken (aka Ken) - bekentech@westcoastfieros.com Original and still the owner of an 85SE 2M6 4spd |
Posted By: ARTIC-1
Date Posted: 11 February 2015 at 4:28pm
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HI Nice to see new members,an there Fieros. Good choice in power,took a quick look at the LS4 an with the Alum block, an FWD Applications,remote ELE cooling pump,it should work out nice.Are you going to move everything over from the doner car,or go with what is in the Fiero. Good luck on your build. Joe ------------- SNOW MAN 87-GT/AUTO-2.8_ WHITE 88-TTop/ Duke-2.5. RED |
Posted By: Capt Fiero
Date Posted: 11 February 2015 at 6:15pm
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Now this is a build I have to follow, as I may be mirroring your build minus the turbo in 6 months to a year. I'll warn ya on one thing, if you are planning on going standard trans, you will have a nightmare trying to find a clutch that is small enough to fit in the bell housing and still handle the power of a Turbo V8. A former member of this forum built a ZZ383 with a large turbo hooked to a 6spd in the end was forced to swap out to a 4T65HD trans that was custom built with a custom controller. IIRC Low boost was 600hp and turned up was estimated at close to 1000hp. I don't know all the exact details but a year after it was built the car was parked and is said to be on the chopping block to be parted out.
------------- Capt Fiero 88 Fiero GT 5spd V6 Eight Fifty Seven GT V8 5spd. |
Posted By: TurboTec
Date Posted: 11 February 2015 at 7:13pm
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Thanks guys, really looking forward to working on it.
ARTIC-1 Yes, Im using the Monte SS LS4 and the 4T65E transmission. Im going with a radiator mounted remote electric water pump to push the cold water reverse flow through the engine. Capt Fiero, Tim at Magnashift has a kit that is perfect for this swap and that's what I'm planning to use. It offers stand alone control with full manual shift control and a launch control for the 4T65E. For the EFI Im going Microsquirt with the 24X LS1 mod and Sloppy mechanics turbo tune for start. My goal is 500 600WHP and to make it as street able as possible. I want the car to look as stock as possible on the outside but open the hood and "Bling"... LOL |
Posted By: Dr.Fiero
Date Posted: 12 February 2015 at 6:30am
Yup. 
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Capt Fiero wrote:Posted By: TurboTec
Date Posted: 12 February 2015 at 10:14am
So was that Fiero308? |
Posted By: Dr.Fiero
Date Posted: 12 February 2015 at 5:04pm
Yes. |