Rebuild of Indy Fiero #163 Super Duty 4 (Page 27/28)
shemdogg MAY 15, 05:47 PM
Bro the car n motor are BEAUTIFULLLLLL! very nice!

shem
fierosound MAY 16, 12:42 AM

quote
Originally posted by shemdogg:

Bro the car n motor are BEAUTIFULLLLLL! very nice!

shem



Thank you... your comment is appreciated.

[This message has been edited by fierosound (edited 05-19-2018).]

edfiero NOV 26, 12:56 PM
So after a summer of dialing in tune, how is the performance? Has she been on the dyno for a HP check or have you done any timed 0-60 and/or 1/4 mile runs to estimate the horsepower?

Also, I'm intrigued by your finding that you needed more intake. I'd read from several sources that the V6 dual TBI can flow about 490 cfm. I don't know what the SD heads will flow, but if it is in the 300 cfm range, on the surface it would seem like the the 490cfm flow would be more than capable of feeding anything the heads could handle. Any idea what accounts for your finding? I'm now wondering if I should be on the look out for the big 454 TBI, as it will flow over 600 cfm to put in my SD4.

[This message has been edited by edfiero (edited 11-26-2018).]

fierosound OCT 11, 08:42 PM
Last month, took the Indy for a drive from Calgary to Red Deer and return for a small Fiero meet.
That's about 145 kms (90 miles) each way at speeds averaging 110 kph (70 mph)

The SD4 seems terrible on gas in the city.
The fuel gauge needle seems to have moved every time you look down at it.

Keep in mind, the 84 has a small tank and you can't avoid "stepping on it" with the SD4.
So I honestly didn't know what my mileage would be like for the trip.

Anyways, after the round trip and a refill I got 36 mpg (30 mpg to US gallon) with the SD4 Indy
This was the longest drive I'd taken it on with the new MPFI system I built.

My GT with the 3.4 V6 Vortech S/C got 31 mpg (26 mpg to US gallon) on the same trip.

------------------
My World of Wheels Winners (Click on links below)

3.4L Supercharged 87 GT and Super Duty 4 Indy #163

[This message has been edited by fierosound (edited 10-11-2019).]

fierobear OCT 30, 01:35 PM
I finally finished catching up with this thread. Absolutely unbelievable amount of work you put into this, standing ovation! Thank you for sharing with us.

I have an SD4 engine that’s been sitting in my shop for a long time. I wanted to build a super duty Indy but after reading everything in here I think I will pass! I don’t think I have the patience.
fierosound OCT 31, 08:29 PM

quote
Originally posted by fierobear:

I wanted to build a super duty Indy but after reading everything in here I think I will pass!



Find an Edlebrock 2-bbl intake manifold and run a 2-bbl carburetor.
Had I done that at the beginning, most likely I'd still have that setup on the engine.
The 4-bbl was just unworkable... could not eliminate "bog" when you punched it.

[This message has been edited by fierosound (edited 11-01-2019).]

tmadia NOV 30, 12:19 PM
Just read through your whole thread and, wow! Great job on the restoration! Looks fantastic!

When I got to the part where you were having carb issues kept thinking "Why doesn't he just go efi?" I've done about 5 Megasquirt installs and this is a perfect use for one. Looks like you have it pretty well figured out using GM stuff so great job there! Again, fantastic build!
fierosound DEC 06, 07:10 PM

quote
Originally posted by tmadia:

... kept thinking "Why doesn't he just go efi?" I've done about 5 Megasquirt installs and this is a perfect use for one. Looks like you have it pretty well figured out using GM stuff so great job there! Again, fantastic build!



Thank you...

A lot of it is "if only I knew THEN what I know NOW..."

And... the tiny Bosch EV14 injectors that make the MPFI I built possible didn't exist before fall of 2012.

[This message has been edited by fierosound (edited 06-08-2022).]

FIERO JOHN-WI JAN 25, 02:09 PM
I don't know if anyone he collects rare Fiero Super Duty Literature, this came from a Pontiac service managers estate sale, very interesting stuff. Plus look at my other auctions I have listed some other Indy pace car stuff.
https://www.ebay.com/itm/84...9:g:JW8AAOSwZehgBMJe
fierosound SEP 09, 11:56 AM
Just making the rounds with the Indy to local car shows these days.
People are very receptive to seeing and talking with us about the Fiero.
(Indy and GT next to it are mine )

[This message has been edited by fierosound (edited 09-09-2021).]