Body shaming
The original Countach was an exceptional design. The later flared/winged cars were the stuff of fantasy for 12 year old boys.
https://www.dupontregistry.com/autos...ghini/countach
Last edited by jimmyb; Oct 1, 2018 at 03:13 PM.
The original Countach was an exceptional design. The later flared/winged cars were the stuff of fantasy for 12 year old boys.
https://www.dupontregistry.com/autos...ghini/countach
The original mastery of the line gets lost when the body proportions are modified.
When I started out, the sports car of that day were closer to 60" than 65".
It is a lot easier to keep a 60" ar in a 80" lane than a 75" car in a 80" lane.
The Best of Corvette for Corvette Enthusiasts
But really, I do wonder if a widebody will actually seem wide if they are all that way. Maybe it will just seem normal, and and even WIDER version will be needed.
-T
Last edited by Trackaholic; Oct 15, 2018 at 04:15 AM.
Hmm, you don't make wide bodies "to look good!" They are there to fit wider tires for more traction. Form Follows Function so some folks think that looks good as it reflects better performance.
There are other ways to fit wider tires, a tubbed chassis or foolish (IMO) looking spats! My ProStreet Rod uses a Tubbed chassis to fit the 420 section width (16.5 inch) wide tires in the original width fenders. Yep it can de done with a transaxle and IRS!
There is another really foolish look IMO, that is having the tires stick out from the fenders with improper wheel offset. See young folks doing that with their trucks and rice burners around here! Great for wheel bearings and handling- NOT!

Last edited by JerryU; Oct 15, 2018 at 05:39 AM.
I would suspect Porsche is not making the move expecting to loose $ in the process.
Last edited by tcinla; Oct 18, 2018 at 12:25 PM.
Ferrari:
488 GTB: 245/35 ZR20 J9.0 Front / 305/30 ZR 20 J11.0 Rear
488 Pista: 245/35 ZR20 J9.0 Front / 305/30 ZR 20 J11.0 Rear
Lamborghini:
Huracan LP580/2: 245/35 R19 Front / 305/35 R19 Rear
Huracan LP610/4: 245/30 R20 Front / 305/30 R20 Rear
Huracan Performante: 245/30 R20 Front / 305/30 R20 Rear
McLaren:
570S: 225/35 R19 Front / 285/35 R20 Rear
600LT: 225/35 R19 Front / 285/35 R20 Rear
720S: 245/35 R19 Front / 305/30 R20 Rear
So, technically a 305 cross section rear tire is pretty much standard fare on much more expensive mid engine cars. The only examples of mid engine cars with larger rolling stock in the back are much more expensive, such as the McLaren Senna and P1, the Porsche 918, the LaFerrari, and the Aventador all have wider tires.
All in all, I think the 305s look perfect on this car. As for being traction limited with 420s in the rear...you have no weight over them, of course you can light them up! Throw some sandbags in the back and see if that helps
Many mid engine cars have 305's as did the C8 in Germany, however the current Ford GT with it's 3.6 Liter V6 has 315s and both the old Enzo and la Ferrari have 345s!RE my ProStreet Rod; it has 53% of it's 3000 pounds on the rear wheels! First the engine is set back (see pic below of firewall and floor cut during construction.) That TCI ridged Chassis has a heavy Currie 9" Ford rear as is the very ridged 4 bar link adjustable rear suspension and chassis. Adjustable coil overs are set for even tire load under launch. Lots of heavy "stuff" in the rear interior as no room for a rear seat!
Perhaps the biggest reason for being traction limited is the ~600 ft-lbs of torque from that 502 cid BB with long tube Sanderson headers, 850 Holley double pumper and straight thought Borlas in 3 inch pipes help. The race prepped TH400 with high stall converter and rear gears give optimum launch. Yep slicks would get more traction but the 420 equivalent Mickey Thompson Sportsman tires using tubes and low pressure are good enough for me!

Bet the Z06 or ZR1 version of the C8 will have wider tires!

Last edited by JerryU; Oct 18, 2018 at 04:15 PM.
Many mid engine cars have 305's as did the C8 in Germany, however the current Ford GT with it's 3.6 Liter V6 has 315s and both the old Enzo and la Ferrari have 345s!RE my ProStreet Rod; it has 53% of it's 3000 pounds on the rear wheels! First the engine is set back (see pic below of firewall and floor cut during construction.) That TCI ridged Chassis has a heavy Currie 9" Ford rear as is the very ridged 4 bar link adjustable rear suspension and chassis. Adjustable coil overs are set for even tire load under launch. Lots of heavy "stuff" in the rear interior as no room for a rear seat!
Perhaps the biggest reason for being traction limited is the ~600 ft-lbs of torque from that 502 cid BB with long tube Sanderson headers, 850 Holley double pumper and straight thought Borlas in 3 inch pipes help. The race prepped TH400 with high stall converter and rear gears give optimum launch. Yep slicks would get more traction but the 420 equivalent Mickey Thompson Sportsman tires using tubes and low pressure are good enough for me!

Bet the Z06 or ZR1 version of the C8 will have wider tires!

Last edited by Shaka; Oct 19, 2018 at 09:20 AM.
The handling issues are at launch. It has posi but if one of those tires loses traction due to the pavement it makes a hard turn! You get about 1/2 second to back off and steer! A lot more exciting than a launch in the Grand Sport (and quicker!)
Last edited by JerryU; Oct 18, 2018 at 06:35 PM.
The handling issues are at launch. It has posi but if one of those tires loses traction due to the pavement it makes a hard turn! You get about 1/2 second to back off and steer! A lot more exciting than a launch in the Grand Sport (and quicker!)

Last edited by Shaka; Oct 19, 2018 at 03:12 PM.
Appreciate your passion but TCI is one of the best street rod chassis builders in the country. Not the cheapest. Before I purchased their product I visited their facility, now 32,000 square feet, and talked with the GM as I toured!
There are a number of ways to build a quality rear suspension (by the way my front suspension is double wishbone adjustable coilovers with sway bar and have disk brakes in all 4 corners.
Yep would be perfect to have a Watt's linkage to keep the rear perfectly centered (better than any arrangement of a single Panhard rod BUT not much room in a tubbed chassis!
Have a number of text books on chassis design and use Chris Alston's book on setting up an adjustable 4 bar link rear. Bit of math with instant center calculations, identifying the CG etc. But then I like math!
Below is from the TCI (Total Cost Involved.) website. They have built thousands of street rod chassis and mine has run just fine for 18 years! In fact they were a help in supplying hi res pics for the book I wrote for CarTech Pro series in 2015 (on advanced welding.) Great folks, great products.
"In 1974, Total Cost Involved Engineering began to set the standard for quality when we built one of the first Model ‘A’ reproduction frame. It took the Classic Car restoration market by storm. Today, we own 32,000 square foot manufacturing facility, where we deliver a broad mix of products serving Street Rodders, Hot Rodders, Pickups and Muscle Car enthusiasts nationwide. We’ve earned numerous design awards, including the coveted ‘Manufacturer of the Year’ Award from SEMA-SRMA. Through a well-trained team of experienced engineers and machinists, we’re still setting the highest standard for reliability and performance, as we’ve done now since 1974. We promise to achieve this standard in all the products we deliver to you. We take quality very seriously which is why we offer a 6 Year/60,000 Mile warranty on wear & tear items and a lifetime warranty on any part we manufacture in house. Quality doesn’t cost, it pays."
PS: Know all about "lawyers for injured people!" I consult as an expert witness (for insurance companies etc!) The last case paid for my Grand Sport and a current "wrongful death case" will pay for my C8!
Last edited by JerryU; Oct 19, 2018 at 11:20 PM.
These are 3 of the many pics from my CarTech Book. The painted one is from my chassis that was all TIG welded. The two of an unpainted chassis are pics TCI supplied for my 2015 CarTech book on advanced welding processes. They now also use Pulsed MIG welding. You can see the excellent quality of their work. Note, lots of holes for mounting the 4 bar link rear suspension arms so the instant center controlling chassis dynamics at launch can be placed wherever you like!
Last edited by JerryU; Oct 19, 2018 at 11:27 PM.





















