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Old 07-10-2011, 03:22 PM
 
Location: Northridge/Porter Ranch, Calif.
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I was reading a July, 1967 issue of Car & Driver. A comparison test between a '67 Mercury Cougar XR-7 and a '67 Jaguar 420 and I noticed a road test of a '67 Ferrari 330/GTC. Looking through the test results I noticed that the 40-60 mph acceleration is almost the same as a '64 Cadillac Sedan de Ville tested by Car Life magazine (July, 1964).

I am surprised that figures are so close, especially considering the Cadillac's size and weight. Here are the actual specs:

-------------------------------- '67 Ferrari----------- '64 Cadillac
-------------------------------- 330/GTC------------ Sedan de Ville

Engine-------------------------- V-12 242-cu-in/3967 L-- V-8 429-cu-in
Rated horsepower--------------- 300------------------- 340
Rated torque-------------------- N.A.------------------ 480 lbs/ft
Compression ratio---------------- 8.8:1----------------- 10.5:1
Transmission-------------------- 5-speed manual-------- 3-speed auto
Axle ratio----------------------- 3.44:1----------------- 3.21:1
Curb weight--------------------- 3,160 lbs-------------- 4,900 lbs

Wheelbase---------------------- 94.4"---------------- 129.5"
Overall length------------------- 177.4"--------------- 223.5"

0-30 mph----------------------- 2.2 secs------------- 3.4 secs
0-60 mph----------------------- 6.8------------------ 8.5
0-80 mph----------------------- 11.3----------------- 14.1
0-100 mph---------------------- 16.7----------------- 23.5

1/4 mile------------------------- 15.1 secs @ 96 mph-- 16.4 @ 86

40-60 mph---------------------- 3.5 secs-------------- 3.7 secs
50-70 mph---------------------- 4.1------------------- 4.5
30-70 mph---------------------- 6.7------------------- 7.6

Top speed---------------------- 153 mph (estimated)--- 121 (observed)

Speed in gears (mph) @ rpm:
1st----------------------------- 50 @ 7000------------- 46 @ 4400
2nd----------------------------- 72 @ 7000------------- 77 @ 4400
3rd----------------------------- 97 @ 7000------------- 121 @ 4650
4th----------------------------- 122 @ 7000------------ - - - - -
5th----------------------------- 142 @ 6800------------ - - - - -
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Old 07-10-2011, 04:12 PM
 
Location: Mass
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Interesting.
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Old 07-10-2011, 04:20 PM
 
Location: Northridge/Porter Ranch, Calif.
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Quote:
Originally Posted by bobrainman View Post
Interesting.
Yes, I've realized that a lot can be learned by comparing specs side by side.
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Old 07-10-2011, 04:24 PM
 
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Well... at 40 mph the weight won't have as much to say as it would in a 0-60 mph. The Cadillac also has more horsepower and definitely more torque, gearing would probably also come into play, so all in all... not that surprising I would think.

That said, Ferraris during the period as well as now weren't really made primarily for straight line speed, that would be a by product of the cars primary task, which would be to scale a winding road efficiently.

I don't think anyone's ever disputed that old American V8 powered vehicles could move in a straight line.
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Old 07-10-2011, 04:48 PM
 
Location: Northridge/Porter Ranch, Calif.
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Quote:
Originally Posted by TheViking85 View Post
Well... at 40 mph the weight won't have as much to say as it would in a 0-60 mph. The Cadillac also has more horsepower and definitely more torque, gearing would probably also come into play, so all in all... not that surprising I would think.

That said, Ferraris during the period as well as now weren't really made primarily for straight line speed, that would be a by product of the cars primary task, which would be to scale a winding road efficiently.

I don't think anyone's ever disputed that old American V8 powered vehicles could move in a straight line.
Yes, true, their passing times were usually more impressive than the 0-60 mph times. Once the weight was overcome, it made a big difference. That '64 Cadillac does have more horsepower and torque, but then again, it does weigh almost 2,000 lbs more than the Ferrari.

The good 40-60 mph for the Cadillac did not last long, btw. By the early-'70s, it was more like 5.5 to 6 seconds.
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Old 07-10-2011, 04:56 PM
 
Location: Anchorage, Alaska
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That Caddy hustled from 0-60 in 8.5! They usually used tall ratios - I knew a bud with a 61' Caddy sporting 2:90 rear gears - not great for a 0-60 but the top end was faster than you'd want to travel.
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Old 07-10-2011, 05:25 PM
 
Location: Northridge/Porter Ranch, Calif.
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Quote:
Originally Posted by IMOGAJAD View Post
That Caddy hustled from 0-60 in 8.5! They usually used tall ratios - I knew a bud with a 61' Caddy sporting 2:90 rear gears - not great for a 0-60 but the top end was faster than you'd want to travel.
The "highway" gears no doubt hurt low-to-mid speed acceleration. My '69 Fleetwood had the original 2.94:1 axle ratio; I bought 3.21 gears from a '69 limousine and had that installed! The acceleration improved noticeably. Not a huge improvement but it cut the 40-60 mph time by about one-half to one second.
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Old 07-10-2011, 09:11 PM
 
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Quote:
Originally Posted by Fleet View Post
Yes, true, their passing times were usually more impressive than the 0-60 mph times. Once the weight was overcome, it made a big difference. That '64 Cadillac does have more horsepower and torque, but then again, it does weigh almost 2,000 lbs more than the Ferrari.

The good 40-60 mph for the Cadillac did not last long, btw. By the early-'70s, it was more like 5.5 to 6 seconds.
Looking at the end speed for each gear it seems the Cadillac would be at an advantage on the 40-60 mph as the Ferrari would either be outside it's optimum range, or it'd need to throw a gear change in there. That might explain a lot of it.
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Old 07-10-2011, 09:36 PM
 
Location: Northridge/Porter Ranch, Calif.
24,511 posts, read 33,317,235 times
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Quote:
Originally Posted by TheViking85 View Post
Looking at the end speed for each gear it seems the Cadillac would be at an advantage on the 40-60 mph as the Ferrari would either be outside it's optimum range, or it'd need to throw a gear change in there. That might explain a lot of it.
Well, it looks like each car would have to shift one time in the 40-60 mph test.
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Old 07-11-2011, 06:01 AM
 
Location: Pikesville, MD
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You'll also notice a marked difference in top speeds, as well. The Ferrari gave up a bit of quickness to have a good top end.
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