[elky] Re: Oh, hell! (transmission questions, too)
- From: Robert Adams <elcam84@xxxxxxxxx>
- To: elky@xxxxxxxxxxxxx
- Date: Sun, 30 Oct 2011 11:51:08 -0500
On Sun, Oct 30, 2011 at 11:17 AM, Ray Buck <rbuck@xxxxxxxxxxxx> wrote: > What's next? Well, the next weakest component, I spose. After talking > things over with a friend, I've come to conclusion that the water was > probably condensation/accretion, since there's a low spot where the exhaust > got smashed by the driveshaft and we've had some hellacious rain storms in > the last month. > > The computer simulation I ran when I started building the motor said that > it should make 550 hp. That was with a conventionally-measured 750 cfm > carb. The carb on it now equates to a conventionally measured capacity of > 950 cfm. I make the distinction because AED (carb tuner/vendor) does. In > any case, it's a bigger carb than the Demon 750 I was originally gonna run > on it. I use the figure of 500 because it's actually less than what the > simulation and the larger carb would indicate. I think it's probably a > little more realistic than the 550 or 600 than the simulation came up with > using the 950 carb. > > When I originally built the car and the engine, it was done with what's > now called "Pro-Touring" as a goal. I wanted a car that could go fast in a > straight line and carve corners nicely. I think that car will still do it, > once it's "correct", that is, the proper rear end, transmission, wheels, > tires, etc. Yes, I was shooting for the 130 Club, but when I decided that > I wanted to race it on the salt, I'd prepare for the 150 Club as well. > This isn't all that unusual. Many racers have either built a 130, then > converted it to 150-legal or built a car that can run in either class. A > 150 Club car can run up to 160 mph (for all intents an purposes) and that > was the overall goal...well, at this stage at least. 200 is the eventual > goal, but I'm not sure this car will make it to that speed. If I'd had the > time and money, I would have installed a roll cage, racing seats and > 5-point harnesses to make it legal in both classes. Some folks have said > that the car kinda makes a mockery of the 130 Club rules and I spose it > does, since it isn't street legal around here (no way for it to pass > emission testing) but again, I'm not the only one who's done this. > > Chris was originally gonna drive this car. That's why he came out to the > salt, since he so kindly sponsored it and provided some much-needed parts. > When it broke, Jim was kind enough to offer the use of his Colorado pickup > in the same class. So the answer is, "yes." :) I still feel like I owe > Chris a ride in a car that could get him into either club. I mean, without > his help, the car never would have made it to the salt, period. > > Now. I'm looking at manual transmissions. As I wrote in another post, I > didn't like the feel of driving a race car with an automatic...even one I > was shifting manually. It just felt mushy with the 3500 rpm > converter...and I only got about 3/4 mile to try to get a feel for it at > WOT. > Yeah that converter was way off for what you need out there. A stock one would have been better in this case. > Anyway, this brings up the question of "which transmission?" I need an > overdrive if I'm gonna use a GN or T-Type 8.5" rear end...iirc, they have > as stock, 3.42 gears. If I go with a Ford 9", then the overdrive thing > won't matter. Anyway, the transmissions I've considered with that 8.5" are > the Tremec 3550 and the GM T-56...I guess it's technically at Tremec, too. > Sorry Ray sold the 8.5 a while back. It was a 3.73 anyway from an olds. > > I've been searching the web to see if a World Class T-5 would handle 500+ > hp and while I haven't found any chart or hard numbers, I get the > impression that 400 is about as much as they can handle. Please correct me > if I'm wrong. > I think that's right. any time I see anyone pushing over 400 or so they always end up having to go with a stronger trans. > > Anyway, if I DO go to a manual transmission (I have a used TH200-4R > sitting on the floor of my garage, I spose I could slap that in...I really > don't know what kinda shape it's in, tho) I'd like to have something that I > could do some road racing with as well as racing on the salt...and if for > some reason I were to put a blower on the motor, I'd like to have a safety > margin to allow that...although right now it's not real likely to > happen...but ya never know what might happen. I spose NOS could be > possible after the 150 Club (it's not legal in the 130 or 150.) > > So any feedback/ideas/suggestions would be welcome. > > r > Well I'd look into the T-56. They aren't too hard to find and I think it'll do what you need for a while at least as long as you don't break something else and take it out.. There are a couple newer manual transmissions in trucks but they are immensly huge and way heavier than an auto. Would require quite a bit of floor pan mods to get it in. Had to change the clutch in a newer ford truck and it was a real bear even on a lift with a trans jack. Just a massive piece of aluminum. Robert Adams
- [elky] Oh, hell!
- From: Ray Buck
- [elky] Re: Oh, hell!
- From: Brian M
- [elky] Re: Oh, hell! (transmission questions, too)
- From: Ray Buck
- [elky] Oh, hell!
Other related posts:
- » [elky] Re: Oh, hell! (transmission questions, too) - Ray Buck
- » [elky] Re: Oh, hell! (transmission questions, too) - Robert Adams
- » [elky] Re: Oh, hell! (transmission questions, too) - STILLFRANKSFAULT
- » [elky] Re: Oh, hell! (transmission questions, too) - Jim Dos
- » [elky] Re: Oh, hell! (transmission questions, too) - John Christensen
- » [elky] Re: Oh, hell! (transmission questions, too) - Chris Lindh