Supernatural 2.8L. (Page 1/2)
La fiera FEB 20, 06:01 PM
https://rumble.com/v4ecgob-supernatural-2.8l.html

Hello guys! I'm starting to make videos about the engines I've done since I started with the Fiero. They will have information specifically for each of them. They will have if available, Dyno runs, street or track driving and other things.
Since my builds are very detailed here in the forum, I want to give the new members a chance to see what the Fiero with its original engine platform can do and I'll start with the 2.8L who made me a believer that this little commuter sportscar with some mods can run with the big dogs! (In a short track of course )

Enjoy the sound!
Patrick FEB 20, 06:50 PM

quote
Originally posted by La fiera:

Enjoy the sound!



lol It's great!

R Runner FEB 20, 07:37 PM
Man! Those are some great clips!

------------------
Paul

82-T/A [At Work] FEB 20, 08:07 PM

quote
Originally posted by La fiera:

https://rumble.com/v4ecgob-supernatural-2.8l.html

Hello guys! I'm starting to make videos about the engines I've done since I started with the Fiero. They will have information specifically for each of them. They will have if available, Dyno runs, street or track driving and other things.
Since my builds are very detailed here in the forum, I want to give the new members a chance to see what the Fiero with its original engine platform can do and I'll start with the 2.8L who made me a believer that this little commuter sportscar with some mods can run with the big dogs! (In a short track of course )

Enjoy the sound!




Dude, at 1:20... it sounds just like a Ferrari Daytona... seriously, that's awesome!!!
La fiera FEB 20, 09:10 PM
And I forgot to mentioned this is all with the stock ECM. No reprograming or anything like that. I think I had a Hypertech chip in it and you know what that does, RICH BABY!!

[This message has been edited by La fiera (edited 02-20-2024).]

hyperv6 FEB 21, 06:45 PM

quote
Originally posted by 82-T/A [At Work]:
Dude, at 1:20... it sounds just like a Ferrari Daytona... seriously, that's awesome!!!




Maybe a Dodge Daytona FWD.
La fiera FEB 21, 09:41 PM

quote
Originally posted by hyperv6:

Maybe a Dodge Daytona FWD.



Nope, I know a lot about those. Had a 2.5L turbo Spirit 450WHP 512WTQ. back in the early 2000's. It's firing order is 1342 not 123456 like the GM 60* and that is where the sound comes from.

[This message has been edited by La fiera (edited 02-21-2024).]

82-T/A [At Work] FEB 22, 08:32 AM

quote
Originally posted by hyperv6:

Maybe a Dodge Daytona FWD.




Like LaFiera said, it has to do with the design of our V6 engines. Ferrari's firing order (as he mentioned) as well as the degree (60 degrees) of the pistons, all result in the engine having the ability to produce the sound it does.

Incidentally, this is one of the reasons I'm not necessarily a fan of many of the engine swaps. The 3800, the 4.3, the SBC... they're all 90 degree blocks. It's all math-based of course... and I haven't done the math, but I've read several articles and watched a few videos that explain what the importance is. The 60 degree splay for a V6, and in that numbered firing order, ensures "optimal balance" for the engine. With a V6 that is largely based on a V8, like the 3.8, 4.3, etc... it is naturally imbalanced... to which a lot of additional work needs to be done to improve it. There's also the point of economics. A 60 degree engine can fit easier (though taller) in a smaller car, but by and large... it's able to produce a much better sound than a 90 degree V6.

All of that said, what prevents the Fiero from truly being able to produce the sound that Ferrari produces, is the design of the head, and a properly tuned exhaust, as well as the rpm with which the engine is tuned to make power. At the end of the day... we have a basic V6 GM engine that was specifically tuned by Pontiac to make a little bit more power over stock. They accomplished this with the Fiero's intake plenum which actually produces more power than the other intake plenums available at the time. But if you were able to truly build out the V6 engine... like what La Fiera and Lou Diaz are doing... you're able to get that same sound that Ferraris make. It almost all comes from the 60 degree design, and the tuning of the exhaust and intake.




This is a video that was making the rounds 14 years ago. It's a guy in Taiwan that has a couple of Fieros. This (at the time) was a totally stock 2.8 V6/60 with the stock intake plenum, but he had a specially made full-length tubular exhaust system for his Fiero. For each cyl head, he went 3 to 2, and then 2 to 1, each with a gradually increasing sized exhaust to a total of 2.25"s.


EDIT: This is another video worth watching. Most Ferraris use overhead cams, rather than pushrods since it's easier to dial in, can sustain higher rpms, less inertia in the rotating mass, etc. SOHC / DOHC engines also have a slightly different sound to it. Most Ferrari engines are DOHC, 60 degree, etc. So this is a Fiero with an LQ1 swapped in, that's the 3.4 DOHC motor. The sound is from inside (which is still cool), but presumably if we could find a recording of the outside, and it had a well-tuned exhaust, you'd probably be very close to the kind of sound you get from a Ferrari F355 or something similar (minus two cyls).

[This message has been edited by 82-T/A [At Work] (edited 02-22-2024).]

redromo FEB 22, 02:20 PM
Do you build engines for clients or just your own cars? I love the idea of keeping the 2.8 with some performance enhancements.
Frenchrafe FEB 23, 01:27 AM
Hi Rei,
I can't watch your video as Rumble is banned in France!
Sorry

------------------
"Turbo Slug" - '87 Fiero GT. 3800 turbo. - The fastest Fiero in France! @turboslugfiero
https://youtu.be/hUzOAeyWLfM