Tuesday night track results

Topic: Tuesday night track results (Read 5840 times) previous topic - next topic

Tuesday night track results

Reply #15 – June 19, 2008, 06:26:29 PM

http://www.broaderperformance.com/aod%20transmissions%20and%20parts-A.htm

Sorry bout that. Anyway the Broader Valvebody is identical to what you have now Turbocoupe50, hence why it is 200 dollars vs 450 for the lentech.

Tuesday night track results

Reply #16 – June 19, 2008, 10:27:37 PM

Your car has serious potential to run faster. I would install a shift kit (I have Transgo kit and like it), and install the HI-Rev governor to really use the HP potential of those GT40 heads. 4800 rpm shift is to early before your engine gets into its power range. I would even bet that down low the E7's make more torque than the GT40s, but once up in the RPM's the GT40's should really scream.

Tuesday night track results

Reply #17 – June 20, 2008, 01:16:19 AM

Quote from: TurboCoupe50;224080

The factory AOD VB has no way to shift 1-2-3, as did the older non O/D trannys... Remember the quadrant is P R N OD D 1, it has no 2nd gear hold... It is possible to start in first, shift to D then back to 1 which will hold second... BUT the reverse clutch applies for a instant when doing this, so it does cause premature wear... Most VBs do not address this issue, but do increase the shift points in D so manual shifting isn't necessary...

The Lentech valve body is modified for 1-2-3 and OD is controlled by a switch similar in operation to the AODE/4R70W... The Broader valve body mentioned(a link would have been nice) appears to be similar to the PA unit I mentioned in my first post...

I have a modified(by me) VB in mine that was performed using instructions from a early Lentech mod(in addition to the Trans-Go kit)... It no longer has a "D" position but instead is 2nd(basically it will shift from 1st to 2nd and no farther)... Only issue is I have no O/D lockout(except WOT), but with 3.73 gears I'm yet to see it as a problem... It's scooted through the mountains in PA & WV with no issue at all...

Ah ok. I rarely hold 1st and 2nd since I do know that it wears the tranny. I've only done it on my 3 1/4 mile passes and the rest of the times I can count with my fingers.

Tuesday night track results

Reply #18 – June 20, 2008, 01:55:18 PM

So I did some testing late last night and found that if I lower the rear tire pressure to 24 lbs (instead of 30-31 ish) that:

1. When leaving from idle easing into the throttle the car will grab and not spin if I go to full throttle between 15-20 mph
2. If I bring the revs up to 1800 (the most it will do before spinning the tires) and ease into it the tires will just chirp.
3. When I ran Tuesday I had 19 gallons of gas in the tank. I found I can launch with a minimum of 13 gallons before I get that fuel slosh buck. So those 6 gallons should save what 36ish lbs of weight?

As long as the weather holds I'm headed back to the track Tuesday. It's supposed to be sunny and 78* Tuesday. As long as I get into the 14s this will be my last trip to the track this year as I don't want to rebuild the tranny till next year

I've thought about bumping the timing from 14*-16* as well but that's only what 2-3 hp? I don't think it's worth the detonation risk (even though I am running 93 octane).

Tuesday night track results

Reply #19 – June 20, 2008, 04:10:17 PM

Leave the timing alone for now at least.

Sounds like your on track with the tires. If you can leave the slightest test patch on the ground while chirping the tires to make sure you have full contact and that the tire tread pattern is even.

Tuesday night track results

Reply #20 – June 21, 2008, 11:19:28 AM

I figured going from 14* to 16* wouldn't make much of a difference.

I'm going to try a small "burn out" to check the contact of the rear tires before going back to the strip. I'll have to do it in an isolated area so I don't get in trouble

Tuesday night track results

Reply #21 – June 27, 2008, 12:17:32 AM

So I went back on Tuesday and got 6 runs in 2.5 hours. Weather was kinda shiznitty (83* with 65% humidity). My firts run after a 50 minute, 40 mile highway drive (no cool down time) was 15.2 @93 mph. I aired the rear tires down to 20 psi and made a few more passes and ended up the night with a best pass of 15.01 @ 93 mph (still with wheel spin). I have no doubt that if I had stayed later ( I left at 7ish because I had work the nest morning but the track is open till 10) I would have learned how to hook the thing and finally gotten into the 14s (which I know is where I should be if I could drive, give me a break this is only my second time drag racing :hick: ).

My plans for my nest trip (in about a month) include a lenghty cool down time after the 75-80 mph highway drive. I probably get to the track, make a couple of runs to get a base time, then park the car and let it cool off for about two hours. Plus I plan on staying till the track closes to take advantage of some nice cool night air.

I was also taking to a couple of 5.0 Mustang guys and they agree that I should be running about a 14.6 or so et with my mph. One of the guys was having trouble with the humid air like I was. Last week he was turning in consistant 14.7 ets but was being slowed down to 14.9-15.0 buy the py weather. Hell there was a 12.8 second Cobra that could only do 13.2s because of the humidity.

Oh and some photos shot by the track photographer:

The album:http://www.chicagolandspeedway.com/cgi-bin/r.cgi/rt66_photos_archive.html?SESSION=pfyWmbCeW&N=&event_id=2073&Offset=0