Some pretty good info here!! I have 4.88s in mine and would like to try 4.30s...Good luck with your car,Rodney! Sounds like it will be very fast!

A 4.30 or even a 4.10 would be my choice for what you are doing. Your hp comes in very low I would bet? My main reason for being on the conservative side is all the torque you have and keeping the car hooked up on the launch. It will also keep the rpms down in the traps saving the life of the parts quite a bit. I run a 4.56 and a 33.6 tall tire going 150 mph, and cross at about 7300. A 4.30 would probably work as well as the 5.46 gears in my car.

Hey,Greg! Yupp..It comes in quick! I wonder how long the 4.10 Richmond street gears would live behind my tranny brake 512..I know 440Jim runs them but he footbrakes his car. My rear tires are 10.5 x31 M/Tws..After reading this,I remember that bad1970dust has 4.10s behind his 572"...Maybe that is something Rodney should think about? Great discussion here! Didn't mean to rob your thread,Rodney!!

Thanks good information!
Did you mention what your 60 foot times were?
When we had the car at Woodburn in 2008 the finish line RPM was over 7000 so I was short shifting which really didn't make a lot of difference. At that time we were considering a gear change but when the cylinders cracked due to over boring to 4.5 {the machinist didn't sonic test the block} we had an engine build to deal with. Possibility the converter / Trans was causing slippage? Once the car is back together and I get things organized the 1/4 mile track will be next.

Thanks! We do have some rather talented people here!! I sent for a Strange catalog a week ago..I think they have the 4.30 Pro gears on their website..You might want to check that out.

Peak power will be related to flow, cam, compression, stroke and should occur before the finish line. I run 14 x 32 tires and 60' at 1.32 My car could easily run a 5:13 gear due to the fat valve covers.

The transmission is finished and the builder did a little more adjusting to the line pressure.
He also drilled tapped and installed a plug on the case, in alignment with the pressure adjusting screw on the valve body. With this done I can hook up a pressure gauge to the hi side pressure with the transmission in gear check and adjust the line pressure to {crap can't remember?} good thing I wrote it down at the shop.
We also purchased the EGT plus two channel and rpm monitor from Comutech to aid in jetting the cars I'm tuning. I also got the RaceBase electronic log book and spent a few hours inputting the data from last year and this year. This is a good thing IMO, at a glance with all of the runs in front of me on one page can see that the MPH was going away = transmission going away for quite some time. $50.00 well spent

Thanks for the info and "good" advice!
the car, now in 3rd gear 1/8 mile right at 6000 rpm's
I can live with that.
The day was real poor for trying to tune or even race a car due to rain and cool wind. The car didn't come close to the 6.27 it ran a few weeks ago but everyone was having a drop in ET.
I think the 63 was worse running 6.50s and only seeing 106 mph. The launch seemed a lot harder from where I was sitting. but the 60' was 1.45's and some one said I looked like I was spinning after the launch. I walked the track between rounds and it was not sticky at all past the launch area.
It was surly one of those days, after the first time trial I discovered both relays to the cooling fan and water pump were fried. Luckily I had a couple in the trailer to take car of that.
I do need to find some for the 16 volt system.
The Lube Tube oil accumulator decided not to hold pressure, I discovered the electric valve/switch is not holding the oil in the tube once shut off. That was a new switch not too long ago. I am tempted to install a manual valve and install a cable to operate it from the driver's seat, unless anyone knows of a good electric switch to get?
I was launching the car first @ 4500 brake with the throttle enhancer at around 2500 as I was doing in the past, then changed the chip to 3800 on the trans brake. That really didn't seem to make any difference.
The converter flashes @ 5000.
shifting at 6700 rpm peak HP is 6700 to 6800.
Won a round then it really started to rain had to wait a couple hours then broke out in the 2nd round with a 6.547 on a 6.55
the Trans is fixed now I just need to figure out how to set the car up to get my 60' times back or it could have been more the weather than anything.
If we don't gt rained out tomorrow I'm going to give it another go.

Hi it's nice to here you are back running. I had a 9'J converter in my bird about 10 years ago with a 452 motor and it went 5,100 but me and Brad put it in his Duster with a 500 inch motor and it went 5,500 rpms on the brake. Did some one build the converter for you car? Maybe in two weeks i will see what my car will run good luck to you .

yes Continental converters reworked it for us.
good luck to you!
It will be a couple weeks before we have the car at the track, right now it's wet wet wet .
Probably just as well the car really needs some relays and this will give me a chance to fit the oil accumulator.