Rebuild of Indy Fiero #163 Super Duty 4 (Page 3/28)
fiero67 NOV 10, 06:00 PM
great job you are doing. I love threads like these that restore indy fieros. I wish I had one. keep posting !!! John

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Project88GT build up thread

Dennis LaGrua NOV 10, 06:31 PM
I saw this car a few years back at Carlisle when the previous owner showed it and it looked nothing like you have it looking now. For the money that you paid it should have looked like this when you received it. Not trying to rub it in but just wanted to complement your fine work. Do the future plans include converting to EFI? The Webers that you have are efficient carbs but there is no room for any real air filtering. I believe that EFI would boost cold weather starting, efficiency, drivability and gas mileage With a 4BBL manifold from Clifford you could bolt on a Holley TB or even an AC Delco injection system.

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87GT - 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "

The_Stickman2 NOV 10, 07:02 PM
Actually an intake from Clifford research won't work on a Super Duty head. It will bolt up alright. But the ports on the SD-4 head are so big they are actually taller than the intake flange in those intakes. Same with the stock ones. Not sure about the Holley TBI intake.
Dennis LaGrua NOV 10, 10:00 PM

quote
Originally posted by The_Stickman2:

Actually an intake from Clifford research won't work on a Super Duty head. It will bolt up alright. But the ports on the SD-4 head are so big they are actually taller than the intake flange in those intakes. Same with the stock ones. Not sure about the Holley TBI intake.




Well, it looks like the four expert has me proved wrong again but what do you expect from a diehard V6 man? Then I must acknowledge that the SD4 head ports must be huge, so much so, that even porting the Clifford intake won't do it. The Holley TB FI system will bolt up to any manifold that is drilled for a Holley carburetor but since we don't have such a manifold then that takes out that option unless an intake can be made up from mandrel tubing with a flange welded to it or we modifiy an SD4 manifold. A while ago I read the performance specs of the SD4 and geeze that engine screams!

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87GT - 3800SC Series III engine, 3.4" Pulley, N* TB, LS1 MAF, Flotech Exhaust Autolite 104's Custom CAI 4T65eHD w. custom axles, HP Tuners VCM Suite.
87GT - 3.4L Turbocharged engine, modified TH125H
" I'M ON THE LOOSE WITHOUT THE JUICE "

Raydar NOV 10, 10:46 PM
Nice job!
I wondered about that car...


quote
Originally posted by fierosound:

...I didn't like the 3.33 final drive (35/35 gears), so I dropped the cradle again to have the transmission gearing changed to a 3.73 final drive (33/37 gears) which was much better match with the engine performance and the larger 15" wheels I would be using.



Before I did my 5 speed swap, I was also contemplating doing this with a 4T60, to use with my 3.4.
Did you do the work yourself?
Do you know how difficult it was?

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Raydar
88 4.9 Formula IMSA Fasback..........................88 3.4 coupe -soon to be something other than red

Read Nealz Nuze! Praise the Lowered!

Bradley Jay NOV 10, 11:49 PM
And where the HECK did you get that Indy Fabric?

Great build so far, keep it up.
fierosound NOV 11, 11:27 AM

quote
Originally posted by Bradley Jay:

And where the HECK did you get that Indy Fabric?

Great build so far, keep it up.



Thank you

Dom Corey Interiors - I don't think he has any left though.
https://www.fiero.nl/forum/...100421-4-042279.html

[This message has been edited by fierosound (edited 09-02-2023).]

fierosound NOV 11, 12:39 PM

quote
Originally posted by blackrams:

Wow Tony! All I can say is that sure isn't the car I delivered to you way back when. Though I don't pretend to have any special insight into the car, I did transport it and therefore was under the car to tie it down and did a pretty close inspection to note any issues prior to transporting it. It was a pretty nice but typical car with the exception of the SD4 in the engine bay and a pretty nice interior...




Thanks Ron. Pictures of what you delivered here:
https://www.fiero.nl/forum/Forum2/HTML/095615.html

[This message has been edited by fierosound (edited 09-02-2023).]

Fiero5 NOV 12, 11:49 AM
Wow!
fierosound NOV 12, 07:46 PM

quote
Originally posted by Dennis LaGrua:

IDo the future plans include converting to EFI? The Webers that you have are efficient carbs but there is no room for any real air filtering. I believe that EFI would boost cold weather starting, efficiency, drivability and gas mileage With a 4BBL manifold from Clifford you could bolt on a Holley TB or even an AC Delco injection system.




Nope. We don't have the expertise up here to get something like that tuned and working properly. If it was a Chev or Ford V8 - no problem. Everybody's an "expert" in those things to the point where they don't have to think. And THAT's the problem. It's like the problem I had when I went Supercharged - it's outside everyone's area of expertise. The engine shop never saw a 4-banger like this before - luckliy all they needed was a complete copy of the SD4 guide.

Keep in mind, this will not be a daily driver, won't be driven in winter weather at all and will be primarily a summer weekend driver and a Show and Shine participant.