Genesis or Survival Motorsports crate

[olddog]

In my car at 70 mph the wind is so loud, I would have to have the engine up to at least 3000 to hear it. At 55 mph, the wind will make my ears ring if I drive very long. I pretty much wear ear pluggs all the time, unless it is a short hop or in town.

I never drove a FE cobra. I would expect a big inch FE would have enough torque to not need a low gear ratio. I think I would still go with the .82 5th and then drop the rear gear ratio to get the desired rpm, if needed.

My small block doesn't get too load until above 2500 rpm and the cam does not like running below 2000. To be honest, if the engine had a milder cam, the .64 would be more usefull to me. So depending on your build you could be happy with the .64 gear. It sill sounds like you skipped a gear, when you shift into it. I think you need to look at the expected torque curve for your engine and make sure its going to run well for you. Measure twice and cut once.

[patrickt]

Originally Posted by olddog

In my car at 70 mph the wind is so loud, I would have to have the engine up to at least 3000 to hear it. At 55 mph, the wind will make my ears ring if I drive very long. I pretty much wear ear pluggs all the time, unless it is a short hop or in town.

Wind wings and sun visors make a pretty big difference with the wind effect. At 70MPH, the wind is really not bad at all and with the revs at around 2000RPM, you can actually chat with your passenger.

EDIT -- I was also told once that the dual roll bars, with the fat padding on them, also cuts down the wind effect. I don't know whether that's true or not though. I guess it could be -- some late model roadsters have little wind blocks that come up behind the seats, kind of like that.

[olddog]

Originally Posted by patrickt

Wind wings and sun visors make a pretty big difference with the wind effect. At 70MPH, the wind is really not bad at all and with the revs at around 2000RPM, you can actually chat with your passenger.

EDIT -- I was also told once that the dual roll bars, with the fat padding on them, also cuts down the wind effect. I don't know whether that's true or not though. I guess it could be -- some late model roadsters have little wind blocks that come up behind the seats, kind of like that.

Interesting. I assumed the wind was the same in all Cobra's. My wind wings and visors have little affect on the sound. The previous owner installed a single, two seat wide, roll bar that would meet todays requirements to get it on a track. The wind is definately hitting the back of my head. The wife is short and the sound does not bother her. I had assumed she was brain dead, but maybe the air is not hitting her.

Hey thanks. I got some things to look at now.

So not to high jack this thread - back to the regular programming.

[patrickt]

Originally Posted by olddog

The wind is definately hitting the back of my head. The wife is short and the sound does not bother her. I had assumed she was brain dead, but maybe the air is not hitting her.

Hey thanks. I got some things to look at now.

Here is a shot of Rob Frink's wind deflector. As I recall, he reported that it worked surprisingly well. You know, you could make something like that, that was quickly and easily removable for the highway, really easily.

[olddog]

Back to the transmission. I think there is a 6 speed box that has a 1.0 4th, a .82 5th, and a .64 6th, or there abouts. It's likely the cost for that transmission isn't but a few hundred more, if you haven't purchased it yet. It sure would give you more options to keep the revs down at many speeds.

It's so much fun to spend other people's money (I think I'll run for congress).

[dcdoug]

I have a TKO 600 with a 3.31 rear end and a .82 5th and its fine in all gears and is great on the highway. The only time I get any buck as Patrick described is if I idle along in 1st gear without touching the accelerator. But a little bit of accelerator and its fine.