I was watching this video about an early 1990's Vector W8 supercar that made 625 HP and 650 TQ with a modified twin turbo Corvette engine. When the video got to the engine, it was clear that Vector was running an early version of the FIRST TPI intake. If you want to skip to the engine, go to time stamp 28:37
According to wikipedia, the engine made 625 hp at 8 psi of boost, but was tested to 14 psi of boost and made 1200 bhp. Wiki also has a picture of the engine that shows a FISRT TPI intake (most easily identified by the throttle body). https://en.wikipedia.org/wiki/Vector_W8

 

Looks like a stretched, V8 swapped Fiero. Pretty sweet!

 

It definitely was based off a Fiero and shares allot. I liked the coil on plug which was way ahead of its time back then

 

Doug Demuro Just did a great video on one.

 

i dont believe that number at 14 psi at all. Lol if it made 625 at 8, it wouldnt double its power with 6 more psi lol
it be more typical to see 20-40 hp per psi, so 14 would be closer to 735-865

 

I agree about the additional PSI not doubling the horsepower, but upon more reading, the 14 psi engine was the prototype Vector race engine. So I don't know if it's an apples and apples comparison,

What is interesting is that I found two different websites that said the production engine made the 625 HP at 5700 rpm. That is a little higher rpm than I thought a stock FIRST intake would pull to.

https://www.supercars.net/blog/vector-w8/
https://www.topspeed.com/cars/vector-w8/ke1287.html

 

I think they had 2 versions on the 1st intake a 750 TB and 1000 cfm TB or something like that...I have a very early 1st intake on my wifes 89 iroc with a 383 stroker...

 

Thats the video in post #1.

 

Thanks for posting the video – I had forgotten all about the Vector W8. They were using high-end parts on it for sure. Many were things that I REALLY wanted back then but couldn’t afford. For instance, the FIRST intake, B&M Hi-Tek 2-piece valve covers, and ADS 300i plate speakers.




From the picture below, it looks like they modified the FIRST runners in the later models, utilizing custom dual plenums and throttle bodies. I’m hoping the gutted siamesed runners will work for me, but if not, I may end up doing something like this myself.

 

I was running a box stock FIRST on a flat-top 355 with Trick Flow G1 Twisted Wedge heads (flow slightly better than a stock set of Vortecs), and a 218/228-110 cam. It ran 12.6s with temps in the high 80s and shifting at 5800 - i originally thought it was going to like being shifted around 6000, but it ran the same times shifting at 6000 as 5800, so I shifted at 5800.

That 6.0 engine in the W8 only has a few more cubes at 365 (interestingly enough, it's the same bore and stroke as a LS 6.0) and based on all the other high-end parts, I suspect a lot better heads than what I was running on the 355. It probably is running a slightly larger cam with a higher lobe spread also. So, making peak HP at 5,700 doesn't seem like much if any stretch to me.

 

We're building a 383 stroker with a 1st performance intake now I hope it performs well..

 

It shares nothing with a Fiero other than the power mirror control, steering column and key.


Check it out further....the car was phenomenal in it's day...and still is today. The Fiero, was not.

 

Oh young Grasshopper you wont find any wisdom with your eyes so closed.

I dont disagree that this car is amazing but there is most definitely queue from the Fiero other than you stated. It actually makes sense to look at another mid engine american car from that time who stole its design from Ferrari. This would also make some parts more readily available. The Fiero was definitely built from left over parts but still managed to beat the prized Ybody on the track which helped kill the little economy car. I am not saying its a rebodied kit car Fiero i am saying it does share more than you saw. look again at the fuel door, ebrake and hidden release handle. there are a couple other small items but
Next your going to tell me our beloved Fbodies dont resemble another economy car made ten years earlier (Hbody) also stated to be Quete " not phenominal" right down to the crappy 7.5 rear, intank electric pump and torque arm.
, I apologize to the OP as this is not a Fiero and i am not saying it was

 

uh. No old grasshopper. Other than the use of some gm parts bin stuff there is zero Fiero in its design.

Unless you count the fact that it has 4 wheels in common.

 

I agree with @Thirdgen89GTA

 

You might want to be sure who's eyes are closed before shitting diarrhea from your mouth. :thumbs:


Additionally, your made-up story about the demise of the Fiero....Yikes. Facts help.


If you look really REALLY hard...you can almost see how "It definitely was based off a Fiero and shares allot" (sic)






Maybe like the McLarren Senna "definitely was based off a Fiero and shares allot"?

 

Someone parked in a bad neighborhood.

 

NM, read wrong

 

Even I got the sarcasm in his post.

He was responding to a previous post in this thread claiming the Vector got much of its design from the Fiero.

Which would be funny because the Vector W2 prototype was 1978.

 

Ah, they used a standard aviation fuel cap. Reason it was blank is there was no requirement to show capacity in the tank on a car's fuel cap like there is on the aircraft they're usually used on. Neat video.