Hi forum, been working an this for more than a year and juat drove it for a few miles so I guess maybe I can "debut" it. Anyway, here are some details about the swap in no particular order.
-donor is a 98 firebird transam (wrecked). -target is a 87 fiero gt. -all emissions gear swapped and functioning, including the in-tank components from the transam. -reverse drive starter engaging the fiero starter ring gear from the transmission side. -quartermaster 2 disc clutch actuated by internal concentric slave cylinder. -1/2" thick steel adapter using all 6 fiero tranmission bolts. -4 sp high geared econo trans. -88 cradle. -stock fiero axles. -externally mounted vss pick-up. -electronically temperature controlled variable speed water pump. -ls1 water pump converted to coolant manifold. -stock transam exhaust manifolds. -2 stock cats. -2 turbo mufflers mounted in the tailpipe position. -2 tie rod end links bracketed to a strut tower and to the firewall for torque struts. -custom dash using the transam intrument cluster.
The swap was difficult (aren't they all?), but I was helped tremendously by all the great information provided here on the forum - made the swap lots easier than it would otherwise have been.
I'll appreciate all questions, comments, ideas, and critiques about anything technical or mechanical; but please, although cosmetics are important, in this case what you see is what you get.
As I said, I've driven the swap for a few miles. There were no strange noises,all the gauges read correctly, and surprisingly, there were no dtc's posted. However, at this point I still consider the swap tentative. I expect to have some problems and won't consider the swap a success until it has at least 500 trouble free miles.
The clutch also worked all right with only slightly greater peddle effort than a stock clutch. Of course, I paid close attention to California Kid's advice about not slipping it very much. Shifting through the gears was about like stock, but it will take some practiceto get my foot educated for starting out in first.
Here are a few pics.
Orville
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08:58 AM
PFF
System Bot
avengador1 Member
Posts: 35468 From: Orlando, Florida Registered: Oct 2001
That is sweet. Now there are two people that hace succesfully done the LS1 swap. I just have the Duke so I can't imagine the speed and torque you are pulling.
In my regards,
One last note: Where did you get that dash kit? That is sweet.
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09:28 AM
BUCK WILLIAMS Member
Posts: 110 From: WATKINSVILLE GEORGIA USA Registered: Dec 2000
like your conversion. i have a lt1 out of a 94 trans am that i may use. plentium is a little differant from yours. i love the dash would also like to know more about it and did you use a kit for conversion?
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09:29 AM
KissMySSFiero Member
Posts: 5542 From: Tarpon Springs, FL USA Registered: Nov 2000
Congrats. Nice job. If I may ask one question, though, why did you keep the air baffles? (Not a critique, just a question!) All the f-body guys ditch those first thing for a decent air box. I would think you could fab up a cold air kit that would fit better and make more power (not that this may be a large concern at this point!)
Ben Cannon 88 Formula, T-top, Metalic Red. (2:13.138 at Sears Point) "Every Man Dies, not every man really Lives" 88 Formula, Northstar, Silver, In-Progreess. -Mel Gibson, "Braveheart"
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02:28 PM
Raydar Member
Posts: 40912 From: Carrollton GA. Out in the... country. Registered: Oct 1999
Hi Artherd, Thanks. Maybe we could compare notes when you start working with your quartermaster clutch and slave?
Hartz, I wonder what rational the gm engineers have for that airbox/resonator/donkey-dong thing, other than to take up space in the engine compartment? I'm using it because 1) it was there and 2) because, for now, it provides a more stock look for when I have to have it checked by the carb ref's. Right now I still have several months to go before my next mandated smog check.
Orville
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06:00 PM
LS1swap Member
Posts: 1181 From: McHenry,IL.USA Registered: Jan 2001
Hey Orville nice job they drive nice don't they.... I wished we lived closer.. You definitely did do some things different. Where did you put your water pump, and what kind did you use? Would it violate your CA. emissions to us the K&N. I see you flipped the fuel rail and vapor vent lines as well. are you still running the vapor line through the throttle body? I know allot of people bypass that. No carburetor icing in CA.( I don't mean plug it off for it lets steam off the top of the heads but not run the hose through the throttle body) I surprised you haven't thrown the codes for skip shift solenoid, and reverse inhibit solenoid. You can place a 4.9K resistor in each should fool the PCM. I imagine I am throwing codes left and right. (egr inop, egr pintle pos. Fuel quantity indicator, EVAP canister solenoid, low engine temp Vs time, and no rear O2's) haven't noticed any driving differences though. I plan on getting the PCM reprogrammed.
I have ran into just a couple problems so far.... Alt belt loose (easy fix) and fuel pump started loosing pressure. Will be driving it to fieroama Sunday we will see if I have any more. Once again great job... Love the f-body dash
edit... We must have been posting at the same time ... You just answered my question on the air box
[This message has been edited by LS1swap (edited 09-06-2002).]
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06:13 PM
LS1swap Member
Posts: 1181 From: McHenry,IL.USA Registered: Jan 2001
More pics of the rest of your car! Taillights arent my style but definately unique! very good job on the swap. Seems like you do good work for fiberglass, you could custom make a beauty cover if you wanted to
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--Adam-- 1987 Blue GT 5-speed IM AOL: GTFiero
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10:21 PM
Sep 7th, 2002
Leper No longer registered
Report this Post09-07-2002 03:15 AM
Leper
posts Member since
Aren't you the guy that had that green fiero with the truncated front end? Did the LS1 car used to have a speaker grille looking rear taillight setup on it?
Anyways, nice work on the LS1 swap.
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03:15 AM
Orville Member
Posts: 263 From: Bakersfield, Ca USA Registered: Dec 2000
Thanks for the encouragement, I need it and appreciate it.
LS1swap, yes, Allen, it's too bad we're not neighbors. The water pump is Davies Craig with the electronic controller. it's located at the bottom of the radiator on the outlet side. The throttle body is as it was. I bypassed the shift solenoids with resistors. I think the reverse lockout takes twice the resistence to give the pcm the correct feedback. Yeah, I don't understand it either about not getting dtc's. We might both be running in open loop, but doesn't the pcm post codes anyway? The K&N will be ok, in fact, I've puchased one - thanks for the part #.
Leper, yes, no, thanks.
Philipine, GTFiero1, here are some other pics of the car.
Orville
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10:25 AM
PFF
System Bot
2.8-4spd Member
Posts: 181 From: Cincinnati,Ohio,USA Registered: Oct 2001
Orville, you don't happen to have another Fiero (stock) to park it next to and take some pictures do you? I'm wondering how much shorter that front end is. I have plans on doing something similar, and am interested in a comparison. Also, care to show some 'hood off' pictures, and let us know what (if anything) you cut away or relocated in the forward area there? Thanks.
- dosed
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02:01 AM
G-Nasty Member
Posts: 2099 From: woodlands,TX,USA Registered: Jan 2001
ORVILLE: The Fiero gods will be pleased...your sacrifice & effort will not go unnoticed. I believe that futuristic creation resembles the goddess Fieronia (Part fiero GT & part shellfish). Actually it resembles the new Lexus 2-seater convertible. In any case its a beautiful car-and a masterpiece. Good Luck w/ the debugging my brotha'- OUT>
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05:43 PM
Sep 11th, 2002
Orville Member
Posts: 263 From: Bakersfield, Ca USA Registered: Dec 2000
2.8-4sp, dosed, here's a pic of when I was just starting to build the plug. It shows how far back the frame was cut and also the radiator position. My camera is loaned out, when I get it back I'll take a shot of the car as it is now with the hood up.
Orville
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10:43 AM
AgaricX Member
Posts: 1165 From: A genetics lab somewhere in TX, USA Registered: Aug 2001