When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
One of those Koenigsegg freevalve engines. It uses pneumatic actuators instead of a camshaft to move the valves. It allows for infinitely different combinations of lift, duration, and overlap to maximize power and efficiency at every RPM. Because it’s all controlled electronically there’s no need for a camshaft, timing chain, wastegate, or throttle!
The 2 liter, 3 cylinder version makes 600hp
I think I have come to a decision and am going to put a twin turbo Ferrari FF F151 v12 in it. It makes 650 hp stock and I’m gonna put twin turbos on it, tune the hell out of it, potentially cam it cuz I’ve never heard of a cammed Ferrari v12, performance exhaust, intake, etc. aftermarket fuel injectors, run e85 and whatever else there is to do to the thing. Hopefully I’ll get 1000+ hp by the end of that. Still working out what I’m gonna do when it comes to the frame though.
C3s are very narrow compared to C7s. But with a Modern frame and C7 suspension, and L88 flares, you could put really wide tires on it, like 335s, and get "most" of that 1000 HP to the ground!
No way I would stick with a stock C3 geometry suspension and weak 400HP IRS parts with your concept!
SRIII is pretty much the cream of the crop in the chassis department, with a C7 suspension and tube frame, and it could be bolted in at home! https://www.sriiimotorsports.com/
Pretty much nothing looks meaner, or curvier, or can fit bigger tires, than a C3 with L88 flares: Look at these rear wheels!
These would look awesome with the 81 front end as well.
C3s are very narrow compared to C7s. But with a Modern frame and C7 suspension, and L88 flares, you could put really wide tires on it, like 335s, and get "most" of that 1000 HP to the ground!
No way I would stick with a stock C3 geometry suspension and weak 400HP IRS parts with your concept!
SRIII is pretty much the cream of the crop in the chassis department, with a C7 suspension and tube frame, and it could be bolted in at home! https://www.sriiimotorsports.com/
Pretty much nothing looks meaner, or curvier, or can fit bigger tires, than a C3 with L88 flares: Look at these rear wheels!
These would look awesome with the 81 front end as well.
Wild project.
We will love to see it.
Please Post pictures!
I wasn’t able to find l88 flairs for an 81, would I be able to just take them from different years and use them with maybe some small modification? Also, I couldn’t find any with that exact rear end as the orange vette in your photo, but that’s what I want, does anybody know how to do fiberglass molding or something so that I can get those on there even though it’s an 81?
Yes, the L88 flares will work on a later car with modifications. It sounds like from your plan you’ll be doing a lot of that though.
The orange car in the picture has a ‘68-‘73 style rear bumper with the actual chrome pieces removed. A number of people have converted their cars from the later style bumpers to that kind. Here is a thread, for example.
The orange C3 with the flares - started out as a 76. FWIW Dynamic Corvette copied another companies flares...Just sayin
Don't know how capable you are in of making parts- I did just about everything myself
$20K was gone in a blink of an eye.
..
You will need an engine management system- add the cost of wiring and tuning. ECU for about $1500 to handle the 12 cylinders-wiring/tuning $$$$$
Will also need more than likely a custom bellhousing- I also had to cut/pin/ thread a BMW flywheel as well...then there is the clutch.
Another thing you will run into is oil pan fitment- I went with 3 Stage Dry sump system for clearance- that an easy $5K
I used a BMW all aluminum V12-which I got relatively inexpensive as I bought a wrecked car.
Did custom ITBs.- fuel injection system-custom fuel rails- pumps- fuel line/tank- easily over $10k
Motor mounts- alternator mounts- Oil filter mounts- serp pulley system...that's just a start!
With the V12s- they have a very large front footprint- you will need to work around that as the crossmenber/a-arms- as take up a bunch of space in the engine compartment.
Oh- the exhaust- I was lucky as the my engine also found it's way into RHD cars (Japan) and was able to work out the exhaust manifolds by swapping sides.
I have a buddy who is an incredible welder- welded the system up- many lunches and c-notesfor the stainless steel down pipes and side exhaust....
Gm Performance Supercharged LT4
Plug N Play.
They probably even have a wiring harness for it!
It can be pushed past 650HP if needed.
And it fits in a Corvette:
https://www.chevrolet.com/performanc...-corvette-1958
Last edited by leigh1322; Dec 16, 2024 at 10:53 AM.
I love the enthusiasm, but 20k ain't enough to be doing anything super exotic these days. Your Ferrari FF engine is 25-30k for just the engine (and have you looked at the maintenance schedule or parts cost for that thing?). Richard's build is exotic in that you never see it, but the engine itself wasn't that expensive compared to all of the ancillary items needed to get it working. A used LS7 is in the 10-15k range, depending on condition and completeness. By the time you add in a cam, intake, valve-guide fix, engine management system, professional tune, bellhousing, engine mounts, accessory drive, radiator fans, exhaust, etc, etc you'll easily have 20k into it. And that's to say nothing of turbos and all of the custom work that comes with those. That isn't to say you can't make 1000 hp on a budget - but its gonna be what everyone else is running: an iron block LS with a turbo or two.
Its pretty hard to build a unique C3. Just about everything has been done before. It takes really stepping outside the box with tons of time, money, and/or both to stand out.
As far as streetable power, my best friend made 2600hp with this setup. For street use he turns down the boost, and has several settings all the way up to a kill setting with full power. Crazy how livable it is with that kind of power.
Last edited by Corey_68; Dec 27, 2024 at 01:48 PM.
