C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

360 Modena vs lt4

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Old Dec 19, 2005 | 07:33 AM
  #21  
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Originally Posted by LT4CompYell
00 360 Modena 395hp 275tq 6spd 3065lbs
0-60 4.5 1/4 mile 13.0@112

Trying to understand something here: why the low torque number in the Ferrari? What could account for this, design, internal additions, extra cams, etc.?
Low torque because small displacement. High horsepower because they rev the guts out of them. Take the extreme for example, an F1 car. I would almost bet an F1 car has a very low torque rating, but they rev 19,000rpm so they can multiply the low torque output by a high gear ratio. So at the wheels you get killer torque. Horsepower is a function of torque and RPM.
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Old Dec 19, 2005 | 07:34 AM
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Originally Posted by LT4CompYell
00 360 Modena 395hp 275tq 6spd 3065lbs
0-60 4.5 1/4 mile 13.0@112

Trying to understand something here: why the low torque number in the Ferrari? What could account for this, design, internal additions, extra cams, etc.?
bore/stroke combo in the Ferrari isn't favorable towards torque like the LT4.. I still say the modded LT4 spanks it
As one person has already posted the Ferrari doesn't come alive til 4k.
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Old Dec 19, 2005 | 07:37 AM
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Originally Posted by LT4CompYell
00 360 Modena 395hp 275tq 6spd 3065lbs
0-60 4.5 1/4 mile 13.0@112

Trying to understand something here: why the low torque number in the Ferrari? What could account for this, design, internal additions, extra cams, etc.?
I would say it's short stoke. ( with cuisinartvette)

Last edited by pletner; Dec 19, 2005 at 07:41 AM.
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Old Dec 19, 2005 | 10:41 AM
  #24  
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I'm guessing he can't drive it for ****. If you know how to launch, you'll take him, not by much though.
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Old Dec 19, 2005 | 03:08 PM
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Thanks, all! Appreciate the answers re low torque.
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Old Dec 19, 2005 | 03:16 PM
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Default modena

I raced I modena, beat him by two lenghts, no drag radials, not totally dialed in either, with a 100 shot of spray, i suspect that the guy did not know how to drive his car, does an F-1 gear box have the paddles on it? He had paddles on his car.
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Old Dec 19, 2005 | 03:46 PM
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Originally Posted by 86VX1
does an F-1 gear box have the paddles on it? He had paddles on his car.
I have paddles on my dune buggy.
I don't think they'd be the hot setup on the street....

Larry
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Old Dec 19, 2005 | 03:54 PM
  #28  
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Torque has never been Ferrari's thing. Hi-revving, low displacement motors, OTOH, have been. The 250GTO's engine was a 2.9L 12-cylinder! Can you imagine the size of the piston?

The F1 transmission will make a difference. It can shift quicker than you can, guaranteed. I say that the race will be won or lost in the first couple hundred feet, which favors the LT4. I know a local guy with a Modena...I'll have to see if he wants to give it a go sometime on the track.
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Old Dec 19, 2005 | 04:06 PM
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Default What kind of racing are you asking about.

What type of race?? There are a lot of LTx cars out there that are stock engined with just gears or a few bolt ons that that would take the Modena in the 1/4 provided the drivers are the same skill. I think the Ferrari would take it in road racing with the same skill drivers. Then there is a top speed run.

Tune the stock LT4, give it sticky tires and a PROFESSIONAL driver and it is the VETTE in the 1/4.
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Old Dec 19, 2005 | 04:46 PM
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years ago, at a track event, I didn't have any trouble keeping up with F355s. Could overtake them coming out of slow corners and in the short straights of the Nelson track at Shannonville Motorsport park.

The only problem was trying to get the Vetter to stop! Ferraris gained and passed under braking. I'm sure this could be addressed with aftermarket brakes.

All told there were some pretty pissed Ferrari owners that their $230K rides weren't any faster that a reasonably well driven $13K clapped out old Corvette. The year before I did the same thing to them in a 1993 Mustang 5.0L Lx. Fond memories.
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Old Dec 19, 2005 | 06:36 PM
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Originally Posted by REDC4CORVETTE
The f car would give you a run for your money .But FACT IS the car only turns 12.70 at 114 to 116 if it gets traction,in the 1/4 mile.
If you change to 1.6 RR and race fuel and get the tires to grip you can beat him in the 1/4 mile with a good light. On the street ,you could get him off the line on the street ,The F car spinns the tires alot before it gets traction.
why would i want to switch back to 1.6 rr when every flow chart i have ever seen shows that the untouched lt4 heads flow less at .550ish lift than at .500 which is right where my cam lifts at with the 1.52rr's?
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Old Dec 19, 2005 | 06:42 PM
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The short stroke is not the reason the 360 has low torque, it's because of the displacement...it has a 3.6 liter engine.

The short stroke is where it gets it's high horsepower though because it allows the engine to rev higher.
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Old Dec 20, 2005 | 12:18 AM
  #33  
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Originally Posted by Two_Tone
years ago, at a track event, I didn't have any trouble keeping up with F355s. Could overtake them coming out of slow corners and in the short straights of the Nelson track at Shannonville Motorsport park.

The only problem was trying to get the Vetter to stop! Ferraris gained and passed under braking. I'm sure this could be addressed with aftermarket brakes.

All told there were some pretty pissed Ferrari owners that their $230K rides weren't any faster that a reasonably well driven $13K clapped out old Corvette. The year before I did the same thing to them in a 1993 Mustang 5.0L Lx. Fond memories.

Over the years I have come across a couple of fairly well driven 355's and one well driven 360. The 355's and my stock LT4 are very close. the LT4 torque would give me a couple of car lengths out of the corners and the Ferrari brakes and rear weight balance would give them back at the end of the straight. Good fun!

The 360 was slower than my LT4 coming out of the corner, but as it wound up it would pull away a few car lengths similar to a C5 ZO6. In a drag race it would probably come down to the launch. If it has the F1 paddle shifters with launch control, a monkey could get a great launch and you are hosed. All the driver has to do is pull the paddles back, hold their foot on the brake, and rev it up. When they release the brake, the computer does the rest.

Cheers,

Lawrence
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Old Dec 20, 2005 | 12:25 AM
  #34  
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Tell me again what advantage there is again, to spending the extra $100-200k on that Ferrari....

Drag race... no
Road race... no
Short trips... no
Long trips... no
Cost of ownership... no
Hanging out with other Ferrari owners... god no
Running from cops... yes

It's gotta be the *****. But you could buy so much more ***** than that for $200k. Ferrari is like a ***** subscription. Pay once, and hope you get your money's worth before it runs out.

Last edited by CentralCoaster; Dec 20, 2005 at 12:28 AM.
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Old Dec 20, 2005 | 09:08 AM
  #35  
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Originally Posted by TrackDayLT4
Over the years I have come across a couple of fairly well driven 355's and one well driven 360. The 355's and my stock LT4 are very close. the LT4 torque would give me a couple of car lengths out of the corners and the Ferrari brakes and rear weight balance would give them back at the end of the straight. Good fun!

The 360 was slower than my LT4 coming out of the corner, but as it wound up it would pull away a few car lengths similar to a C5 ZO6. In a drag race it would probably come down to the launch. If it has the F1 paddle shifters with launch control, a monkey could get a great launch and you are hosed. All the driver has to do is pull the paddles back, hold their foot on the brake, and rev it up. When they release the brake, the computer does the rest.

Cheers,

Lawrence
the computer does the rest unless all that Italian wiring and programming goes haywire and shuts the thing down.
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Old Dec 20, 2005 | 10:28 AM
  #36  
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Originally Posted by CentralCoaster
Tell me again what advantage there is again, to spending the extra $100-200k on that Ferrari....

Drag race... no
Road race... no
Short trips... no
Long trips... no
Cost of ownership... no
Hanging out with other Ferrari owners... god no
Running from cops... yes

It's gotta be the *****. But you could buy so much more ***** than that for $200k. Ferrari is like a ***** subscription. Pay once, and hope you get your money's worth before it runs out.


That's some funny sh!4 fo sure!

Why a Ferrari? Simple because it's a Ferrari. There is a mystique and a pedigree that simply cannot be had with other automobiles. It's the realization of a dream.

Damn, that sounds cheesey! But, if I had the chance, I would go for an F-car. Simply because I want one. It's not about simple performance numbers. It's about sex.
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Old Dec 20, 2005 | 10:34 AM
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It's about sex - I'd rather have it than drive it! With a female (my wife) of course. The vette is sexy enough for me!!
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Old Dec 20, 2005 | 11:06 AM
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Originally Posted by Perfusion
The 250GTO's engine was a 2.9L 12-cylinder! Can you imagine the size of the piston?
Yeah, picture an american V8 valve. That should about do it.
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Old Dec 20, 2005 | 11:47 AM
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Originally Posted by pr0zac
why would i want to switch back to 1.6 rr when every flow chart i have ever seen shows that the untouched lt4 heads flow less at .550ish lift than at .500 which is right where my cam lifts at with the 1.52rr's?

While they may flow slightly less at .550, they still have good flow #'s in that range (not dropping off significantly). You're leaving some hp on the table by going with a 1.52rr. The 1.6 rr will give you .533 intake lift / .544 exhaust lift, which is actually almost perfect for a stock LT4 head
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Old Dec 20, 2005 | 12:37 PM
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Originally Posted by TM-96CE
While they may flow slightly less at .550, they still have good flow #'s in that range (not dropping off significantly). You're leaving some hp on the table by going with a 1.52rr. The 1.6 rr will give you .533 intake lift / .544 exhaust lift, which is actually almost perfect for a stock LT4 head
assuming you have adequate valvesprings
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