[Formulajones]

Originally Posted by jhein

I don't know but I think there's a reason why there are 3 other gears between 1st and 5th. You're supposed to use them. I never liked lugging a motor. I suppose it depends on the motor too. Low compression, small cam motors may tolerate that better.

High compression, 254 @ .050 cam and small 302

https://youtu.be/e39e6p7NMY0

[jhein]

Originally Posted by Formulajones

High compression, 254 @ .050 cam and small 302

https://youtu.be/e39e6p7NMY0

Nicely done video. But in all fairness, you're not really putting much load on it when you're down low in RPM and trying to come out of it. You're easing into the throttle very gently. I don't really chug around like that so I just downshift.

[chuckies76ta]

Originally Posted by jhein

Nicely done video. But in all fairness, your not really putting much load on it when your down low in RPM and trying to come out of it. You're easing into the throttle very gently. I don't really chug around like that so I just downshift.

This is me too, I drive the car. Hammer it.

Gears are for shifting. That is the most fun part with a standard. Can you say Grampa. lol. I know I shouldn't post this but that's the way I feel. That driving is so boring.

https://www.youtube.com/watch?v=gtHulbSZOnw

https://www.youtube.com/watch?v=4-YULu5wT18 10.32 at 132 mph

[Formulajones]

Hammering on the car all the time isn't a normal thing. We do drive these things daily after all. We have to drive civilized most of the time and that video shows that even a big cam in a small engine doesn't need to be downshifted all the time. That's the whole point of the video. If 455's can't do that then the engine either has issues or you guys are telling me a high strung 302 does it better.

I am actually putting a load on it. That's about 1/4 throttle in high gear at very low speed and it picks up speed very well with no need to downshift. You can actually mat it if you want, it just makes 4 barrel sounds and accelerates, but it's honestly just a waste of gas and unnecessary load when your putting around 35 mph zones.
Probably would have shown better what the engine was doing if I put a vacuum gauge up there.

The real point is a 254@ .050 cam in a 302 that has a reputation for being so high strung has no problem with a .64 5th gear and 3.55's out back. If that engine does it then most any other engine shouldn't have an issue

[grivera]

Originally Posted by Formulajones

High compression, 254 @ .050 cam and small 302

https://youtu.be/e39e6p7NMY0

That's a sweet running car!

[Formulajones]

Originally Posted by grivera

That's a sweet running car!

Thanks,


And just for giggles, it does zing when ya want to. Here's a short video on a chassis dyno. Interestingly enough, it has a decently flat torque curve that hangs on quite a while and torque peak just about matches the HP peak. Contrary to what is common folklore with these engines.

https://youtu.be/jI2SxDxH8bM

[scott70]

The wallace calculator says right now I turn 2730 rpms at 65 mph. With a .81 it would be 2200 rpms and with .68 it would be like 1850 rpms. At 75 mph its 2550 with .81 and 2140 rpms with .68. Either OD would be a nice improvement over what I have now. I guess something to think about.

[M91196]

Originally Posted by scott70

The wallace calculator says right now I turn 2730 rpms at 65 mph. With a .81 it would be 2200 rpms and with .68 it would be like 1850 rpms. At 75 mph its 2550 with .81 and 2140 rpms with .68. Either OD would be a nice improvement over what I have now. I guess something to think about.

The Tremec calculator may be useful, it lets you see each gear and switch between multiple transmission options