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Originally Posted by Bryan Jensen
Yeah, without a doubt...
I'm still not really hearing any opinions about the pros/cons of the 700r4...
...what does everyone think of that tranny overall??
Karch, what do you mean by replacing the rear end??? Mine is all high perf. rebuilt, with rear disc and moser custom axles...and an eaton posi with richmond gears. Why would I need to replace it? I am confused 
Bryan |
Bryan, I have seen how you have changed your intentions from a nice all-around 400 to a efi 455, and now you want O.D.
First of all, I love the combo, and I am working toward that as well. I am always slowed down with 2 little ones, a mortgage through the roof (pun intended) and all the other stuff.
But, you are going to get a taste of power, and speed. Then you will be frustrated, especially so close to the track, that you can't get traction.
Let me tell you a dirty little secret. Standard radial tires, not racing ones, are your 8.2's best friend. You will fry those tires from any speed under 50 mph when you mash that throttle.
That being said, you, like most, will say, this is ridiculous (sp?...I'm tired)!
I am going to put on a set of ET Streets, or ET Radials, or whatever, and kills those camaros, mustangs, etc, and really run.
So, hopefully, you get to the track, and that 2.75 first gear in your $2500 Art Carr (in Huntington Beach) 200R-4 trans comes up on the convertor and, here we go again...spin. Then you learn to roll out a bit, and a couple seconds later, with your MAP sensor reading about 95 kPa, and your tach just passing 5500, you reach for 2nd, nice jump forward, and BAM! You just closed the track for the afternoon.
The good news is it's a cheap tow 'cause you live so close, and hopefully you got the car to stop safely.
The bad news is that you need to drop some $2K on the rearend you should have purchased after you decided to put the big dog (stroker crank) in.
Now you are wondering what gears I should go with, and perhaps an upgrade to the driveshaft...it never ends.
There are usually 2 types of people in this hobby, if they can afford either. The first, and more rare, and usually older, has their plan in place on what to do with a car, goes about it, and is most satisfied when the project is completed to their satisfaction. This type rarely deviates from "the plan".
The other, more common, and probably me as well, is always changing and searching, never resting, constantly looking to improve or go faster. This can get very expensive, and unfortunately, there is often a lot more down time.
I haven't even got my 65 where I want it to be and I am planning out my 69 firebird major modified resto.
FYI, we are looking at getting some crank trigger wheels custom made to work with EDIS ignition for full computer control of advance here in the near future.
Oh, btw, I think I failed to answer your question. Power, once applied, will find the weak link. Sounds like you have some good parts in that rearend. Unfortunately, the ring gear diameter is still 8.2", and the pinion gear is mated to that. That's a lot of torque applied to that pinion. I don't see it living to long when you get some good 60' times.
That's just my take. If I had to do it over again, I would dump my 12 bolt and get something better. But, truth is, I don't drive the car much. I think about racing it but can't see to get to the track, and I have so little $$ in the rearend (rebuilt and all) and a laundry list of other things to do that I am just waiting it out.
Karch (just opinions here, anyone can feel free to differ - no harm, no foul).