| Author | Message | ||
| Frank Parker (Parkerfe)
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The manual for my August 1993 built 1994 348 Spider list horsepower at 312hp. I have seen magazine test that list horsepower any where from 294hp to 322hp. Supposely the 348 Serie Speciale, 348 Spider, 348GTS and 348GTB all had more HP than the TB and TS models due to a free flowing exhaust and remapped ECU. | ||
| Jon P. Kofod (95f355c)
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Mark, I own a 95 F355 (origanlly stock now a Challenge car). Before purchasing mine I was looking to trade in my TR for a 348. I drove about 7 or 8 348's and really liked them. I was about to put a deposit down on a 348 Speciale (Serial #1, but someone beat me to it). I was then talked into driving a low mileage F355 that was only about $15,000 more than the Speciale and the 348 Challenge I had been considering. I didn't want to spend more than about 80K but after taking the 355 home for a day I was hooked. Up to 50 or 60 mph I didn't feel a whole lot faster (eventhough the gap is nearly a second on paper) but above 60 the 355 will leave a 348 for dead. At the track I can easily blow by 348's on the straights. For street driving the difference in performance may not be worth the extra cost unless you plan to take it to the track a lot. Just my two cents worth! Jon Kofod 1995 F355 Challenge #23 | ||
| Doug Meredith (Doug308)
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I've always been told around 20%. Who knows? All I know is that the curves of the chart were the same as factory. It was about 20% difference. | ||
| Oliver Cagle (Ocagle)
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My 1994 348 book says 300 hp for the spider and my 1978 308 says 196 hp. | ||
| James Dixon (Omnadren250)
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Doug, Are the numbers 20-25 percent less on the F cars??? I know that the efficiency of the transmission has a lot to do with the loss of hp to the rear wheels, but I didnt realize it was that much. I have friends that have dynoed all their cars (911 turbo, mustang, vettes) and my supra. The loss of power to the rear wheels was more like 15 percent in our cases. | ||
| wm hart (Whart)
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i had a '94 348 spider, and a 99 355 gts (f1). i think the 348 was more raw, and in some ways, more fun, even though it was not as refined. i don't like power steering, the 355 felt like a bigger, heavier car, and since i drive them on the street, not the track, i prefer the stick to the paddle. the fit and finish of the interior was far better on the 355, but interestingly, my wife liked the appearance of the 348 better. The 355 was clearly more powerful, but i think i had more fun driving the 348; however, if i had had a stick in the 355, maybe i would have found the "improved" car more to my liking. given the market, it is hard to say what is now the better buy; 348 spiders seem to be holding their value; 355's have clearly started to plummet, now that 360s are more available. despite everything i just said, i would probably opt for a 355 with a stick, if i were facing the prospect of that purchase right now. | ||
| Mark (Study)
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Maybe I should just ask is the 355 that much faster then the 348 ? What is the gap in speed? Do you noitce it more at low speed 0-60 or above 100mph ? I don't worry about the price. But think the 355 is only slightly better looking. On paper the 355 looks much faster. But I've heard two peole say there is not much of a difference in HP? This got me wondering if there is a good over-all source of information about real HP in Ferrari's ? | ||
| Doug Meredith (Doug308)
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When I got my 308 QV, I had it dyno'd. Great way to tell if it's functioning correctly. The chart curves will tell you if you car is running smoothly. Remember, factory quoted HP is at the flywheel, so real rear wheel numbers are about 20-25% less. If I remember correctly, mine was about 191hp and 160 ft.lbs to the rear wheels which was right on the numbers. Just waiting for the local dyno place to get their lift fixed so I can dyno my fuel injected stroker Pantera tested. Should be 380-410 hp at the rear wheels. | ||
| Tenney (Tenney)
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I'm not certain what the reason may be for the perceived lack of interest, Mark. Might speculate that a fair number of owners simply don't care enough to bother with a dyno pull. Most probably don't mod much beyond Tubi. Those that are interested in hp figures probably have other cars that are more geared toward that end of the hobby. | ||
| Mark (Study)
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Tenney, sorry I didn't get the joke. Very cool  I also like to go over and read the NSX boards and those guys are on the dyno everytime they change something... like an air filter, turbo, nitrious, exaust...and so on. I haven't seem much interest in "real numbers" on Ferrari. Are people shy about it? Or is it just because collectors don't like to add preformance mods to the cars? | ||
| Tenney (Tenney)
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Was sorta half-joking re: Ferrari clubs and dyno days - as there's a fair chance that a good few owners don't dyno their cars. But, if interested, there are a number of shops across the country that have dynos that would offer a convenient means to ID and compare hp (rwhp) figures. Next step would be to find equally interested 348, 355 and 360 owners. I'd be curious to know the results, also. | ||
| Mark (Study)
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Do any of the Ferrari clubs have dyno day info posted on their web site? Who is FCA? | ||
| Tenney (Tenney)
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A club dyno day (a longtime FCA standby?) might offer some insight. | ||
| Mark (Study)
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People have "winked" when talking about the way Ferrari comes up with HP numbers, for as long as I can remember. What is the best way to measure or compair HP ? What do 348, 355 and 360 really have? Is this why 0-60 or 0-100 times are so widely used? |