If you scroll through the pictures you will see an upper intake manifold cover with Pontiac written in the same script as "fiero". Does anybody have any info on this build? I find it to be really unique.
It seems that the prices for fieros is on the rise. Im not saying that you cant find good clean examples at a decent price, but the deals are few and far between. I dont think I would pay over 10k for a fiero at this time, but as time and mileage make more and more of these clean cars rare I may eat my words!
Originally posted by Gall757: WOW. This car is beautiful....
I wonder what the spacer does (besides increase access to the vacuum lines)?
Primarily, there are two "benefits" to a spacer like this. It increases the total plenum volume, and it increases the individual runner length. The additional plenum volume should allow a little more peak RPM, and the runner length should allow a slight increase in torque.
I've not seen such spacers made for a 2.8 intake before. There used to be a few items on the market though, for the TPI intakes, with different runners, since the TPI runners were just bolt-on pieces between the long rectangular plenum, and the lower intake manifold. Interesting to see such a thing on a Fiero, but mostly these spacers are a waste of money.
Primarily, there are two "benefits" to a spacer like this. It increases the total plenum volume, and it increases the individual runner length. The additional plenum volume should allow a little more peak RPM, and the runner length should allow a slight increase in torque.
I've not seen such spacers made for a 2.8 intake before. There used to be a few items on the market though, for the TPI intakes, with different runners, since the TPI runners were just bolt-on pieces between the long rectangular plenum, and the lower intake manifold. Interesting to see such a thing on a Fiero, but mostly these spacers are a waste of money.
I PM'd Matt from the mall. He is the one selling custom billet dogbones to see if he would be interested in making these spacers. Even if it is aesthetic only, they look great. This is what Matt makes: https://www.fiero.nl/forum/Forum4/HTML/072108.html
[This message has been edited by IMSA GT (edited 10-25-2015).]
I'm 99% sure this car was for sale on the Western Illinois Craigslist for months (I check it every day) priced at $6500 and the seller warned it was going to an auction soon. The car had about 94,000 miles per the ad and I specifically remember the silver Pontiac emblem on the upper plenum.
Primarily, there are two "benefits" to a spacer like this. It increases the total plenum volume, and it increases the individual runner length. The additional plenum volume should allow a little more peak RPM, and the runner length should allow a slight increase in torque.
I guess the obvious limitation to the height/volume of the spacers would be clearance with the decklid.
If someone could produce sets of spacers at a reasonable cost, I'd be very interested.
Curious, did the speedometer in the 85 GT only read up to 85 mph?
I am pretty sure all 85 v6 had 85 speedos. Due to the national speed limit law of 1974 vehicles could only go up to 85 in all American vehicles. This included vettes, trans ams, etc. I think around 1981 NHTSA talked about lightening the rules regarding the speedos as they did little to curb speeding. In 86 the speedos went up and up and now we have 4 cylinder KIAS having 140 speedos. HAHA.
Originally posted by Patrick: I guess the obvious limitation to the height/volume of the spacers would be clearance with the decklid.
If someone could produce sets of spacers at a reasonable cost, I'd be very interested.
For someone with a small CNC mill, it should be very cheap to produce such spacers (without any GM logos/names on them), in either aluminum or delrin, depending on thickness.
Not sure why you replied quoting my post, with only this picture of the same car in question. It still remains the only Fiero I've seen with any such spacers.
For someone with a small CNC mill, it should be very cheap to produce such spacers (without any GM logos/names on them), in either aluminum or delrin, depending on thickness.
Out of curiosity, I googled and read a few sites where Delrin versus Aluminum was discussed, such as HERE.
My five minutes of education on the subject would suggest that aluminum would be the preferred choice for these spacers.
It wouldn't be totally out of the question for an individual to make their own spacers using nothing but a hack saw, power drill and a file... but yeah, the proper tool for the job would certainly make the process a whole lot easier.
I am pretty sure all 85 v6 had 85 speedos. Due to the national speed limit law of 1974 vehicles could only go up to 85 in all American vehicles. This included vettes, trans ams, etc. I think around 1981 NHTSA talked about lightening the rules regarding the speedos as they did little to curb speeding. In 86 the speedos went up and up and now we have 4 cylinder KIAS having 140 speedos. HAHA.
I was thinking that but wasn't positive so wanted to make sure I was remembering correctly. I swear I had asked that before but couldn't remember for sure.
[This message has been edited by Khw (edited 10-25-2015).]
Out of curiosity, I googled and read a few sites where Delrin versus Aluminum was discussed, such as HERE.
My five minutes of education on the subject would suggest that aluminum would be the preferred choice for these spacers.
It wouldn't be totally out of the question for an individual to make their own spacers using nothing but a hack saw, power drill and a file... but yeah, the proper tool for the job would certainly make the process a whole lot easier.
I mentioned delrin because some phenolic spacers for carbs are made from it. Maybe I'll design and make some to sell, if I can get enough money to get the ball rolling smoothly on that project of mine too.
I mentioned delrin because some phenolic spacers for carbs are made from it.
I hope you haven't misinterpreted my post... delrin was most definitely a worthwhile suggestion. It simply appears that aluminum for this application would probably be superior and/or cheaper.
quote
Originally posted by dobey:
Maybe I'll design and make some to sell...
It would be interesting to get a ballpark figure from someone with a CNC mill (and the time/desire) on the possible cost of such spacers. We've got to be realistic and acknowledge that any power increase from their use would probably be minimal, so that's ultimately going to limit how much anyone would be willing to pay for them.
[This message has been edited by Patrick (edited 10-25-2015).]
Was the fiero store or west coast fieros in business in the late 80s? I had a fiero performance parts catalog in 88 that had some unique pieces like this. Wish I had kept that catalog. It definitely would give you more torque on the 2.8 .
[This message has been edited by Silvertown (edited 10-25-2015).]
From what I gather in the discussion here, the power gains made with longer intake runners apply to an intake system which is "dry" (injectors near the intake valve) the same way as they do with a "wet" (TBI or carburetted) system? Is that correct?
I'm trying to remember the guys name who did these. Larry Johnson ring a bell? I think he was in the Iowa area. I'm reaching back for this one. I remember him attending several STL shows back in the 2001, 2002, 2003 time period. First class stuff. He did a lot of other CNC things too. I have a few buddies that would know for sure. I probably have a picture of his works of art around here somewhere.
I'm trying to remember the guys name who did these. Larry Johnson ring a bell?
I ran a search of his name and came up with a few things, including the following thread. No surprise, it appears this spacer idea has been discussed before...
Making the radii rounder can make the air flow easier, But lengthening the runner length reduces flow a little at the high rpm range.
What it will do is to increase low end torque and cut back on high rpm power.
I enlarged and cropped the image with all the custom manifolds. It's interesting to note that the manifold with the attached spacers has also had the plenum floor dropped.
[This message has been edited by Patrick (edited 10-25-2015).]
I'm trying to remember the guys name who did these. Larry Johnson ring a bell? I think he was in the Iowa area. I'm reaching back for this one. I remember him attending several STL shows back in the 2001, 2002, 2003 time period. First class stuff. He did a lot of other CNC things too. I have a few buddies that would know for sure. I probably have a picture of his works of art around here somewhere.
Paul, you're right, it was Larry Johnson. I'm willing to bet that Fred could tell you more about these pieces, and if they're still available or not.
I enlarged and cropped the image with all the custom manifolds. It's interesting to note that the manifold with the attached spacers has also had the plenum floor dropped.
The one before it has the polished raised box on top. If you couple that with a Dawg intake mod, you can have some great airflow.
The one before it has the polished raised box on top. If you couple that with a Dawg intake mod, you can have some great airflow.
Rather than the Dawg intake mod, I'd rather run a secondary throttle body as mentioned HERE.
Using spacers as discussed in this current thread would allow me to run a tube from the secondary throttle body to the underside of the plenum... which is an option that wasn't available with the upper plenum mounted in it's usual stock location. Hmmm... more stuff to now day-dream about.
A price of $12,000 for an 85 V6 Fiero with 93K miles is IMO unrealistic. Examine the prices of Corvettes for sale in the same era and you can get a far better, luxury sports car, with superior handling for far less money. If you wish to spend $12 K on a collectible car there are many great choices on the market right now . People will ASK all kinds of crazy prices for a Pontiac Fiero. In reality it is a economy car built on a cheap Chevette suspension and with many parts from the GM parts bins of the time. Its certainly the ideal low cost hot rod/custom car platform or a car for the budget collectors that we have here. You can give it a great paint job but its still a Fiero, an inexpensive economy car by its very design.
------------------ " THE BLACK PARALYZER" -87GT 3800SC Series III engine, custom ZZP /Frozen Boost Intercooler setup, 3.4" Pulley, Northstar TB, LS1 MAF, 3" Spintech/Hedman 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 "
A price of $12,000 for an 85 V6 Fiero with 93K miles is IMO unrealistic. Examine the prices of Corvettes for sale in the same era and you can get a far better......
No. Cars are worth what people are willing to pay and there is no C4 corvette I'd pay more for than the right Fiero it's great shape. It's not unreasonable to believe our oddball car with styling ahead of its time will surpass the value of the ugly gutless c4.
Ps, if anyone wants to try these spacers made out of abs, I'll make a set.
[This message has been edited by jmbishop (edited 10-26-2015).]
No. Cars are worth what people are willing to pay and there is no C4 corvette I'd pay more for than the right Fiero it's great shape. It's not unreasonable to believe our oddball car with styling ahead of its time will surpass the value of the ugly gutless c4.
Ps, if anyone wants to try these spacers made out of abs, I'll make a set.
I'm with you on the c4. My 88 gt will be sitting next to a 2016 camaro ss or a c7 by spring.
I keep returning to this thread. I find myself daydreaming of all the really beautiful pictures of what folks can accomplish with a little heart put into it.
The artwork called a dogbone being offered is on my fantasy list. Soonish...
I would love a Dawg modified intake with those spacers. Aesthetics more than anything.
So you believe those to be current pictures and the ancient carphone is still hanging there... along with the aftermarket cassette deck and this equally old radar detector?
And I realize some Fieros never had it done, but looking at the air filter snorkel and the decklid weatherstripping, I'd say this Fiero was pre-recall.
I'm really curious now how old all those images are.
[This message has been edited by Patrick (edited 10-26-2015).]
But, after a viewing, I was like... 
Very pretty car. 
Just when you think that you have seen it all...
