DRR S/Pro
| quote: Originally posted by Toad1:
I have about 100 runs on this converter and the truck has been pretty good but looking to get it better.
At the launch it goes from 4200 to 6150-6200, stays pretty flat, maybe loses 50 rpm, then climbs to shift at 6900 (at about 2.8 seconds) and drops to 6100-6200. Normal for 3200 lb S-10, 4.86 gear and mild 406" with 1000 cfm alky carb?? Running the truck at about 160 degrees, thinking of trying to get it to 170-180 but it has a hard time getting there even with 3/8" vacuum valve open most of the time. Just curious if the converter is hurt but cant get one for about 8 weeks...so that sucks pretty much.
I doubt it. I had one that has about the same drop before it climbed also. Usually if they are hurt you will know! |
| | | Posts: 2163 | Location: Tewksbury, MA,USA | Registered: November 03, 2000 | 
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DRR Pro
| Appreciate that. I know there is no metal in the pan. Probably the 406 not having too much power , the 4.86 gear and 3200 lbs ;-) Just curious was all , thanks! Jok |
| | | Posts: 1243 | Location: Janesville, IA | Registered: December 21, 2004 |
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DRR Sportsman
| I think Jok's 50 to 100 rpm drop is normal. Pauleys was dropping 200 to 300. I had one that started dropping 300 rpm and slowed down. After messing with non convertor stuff for a couple weeks the spraq finished breaking. It was an old Coan convertor with a million runs on it. Kenny Ford (PTC) fixed it after I broke it.
I used to be a people person, but people ruined that.
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| | | Posts: 225 | Location: Usually home | Registered: January 27, 2013 |
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DRR Sportsman
| quote: Originally posted by JAFR:
Pauley, who is your converter guy? My graph is very similar to yours and Toad 1. The initial launch is good but then it falls back, locks the converter and slowly climbs in RPM. Car is consistent and runs well but we are always looking to improve.
I got Greg Slack to fix mine. he is fairly local to me. Kenny Ford at PTC as Woody B stated is a great guy and would look at it for you. I have run Kenny's stuff for years but I am currently running the one that Greg fixed for me. ep |
| | | Posts: 777 | Location: dodging double wides... | Registered: November 28, 2007 |
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DRR Trophy
| quote: I got Greg Slack to fix mine. he is fairly local to me. Kenny Ford at PTC as Woody B stated is a great guy and would look at it for you. I have run Kenny's stuff for years but I am currently running the one that Greg fixed for me.
Thank you for the information. I have dealt with PTC before, good people for sure. |
| | | Posts: 112 | Location: SO. IL. | Registered: January 18, 2004 |
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DRR Top Comp
| Small tire Super Pro you want a lot dip after flash stall, all it is, is the driveshaft trying to catch up flexplate, after flash stall. It's traction control right where you need it for small tire Super Pro racing. You can tailor the dip using a low (slow) starting line ratio number. Spragless converters are very smooth in this area on the track. Methanol consistency seems to like the load.  |
| | | Posts: 9398 | Location: Madeira Beach Fl. | Registered: June 12, 2018 |
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DRR Pro
| My flash and shift fall back are never the same, usually 500 RPM above flash on the shift, about 500-600 RPM under shift. Sprag or spragless.
"Despite the high cost of living, it remains popular."
Dave Cook
N375
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DRR Pro
| quote: Originally posted by Footloose:
Goob how many passes since trans and converter freshened ? What about filter?
Countless on the sprag unit, probably 300 or so on the spragless. Spragged unit is an Opel style. Both Coan built. TH-400 with a 2.10/1.40 gear set. Filter and pan are clean, less a smidge of non-metallic friction materials....  Replay tach in the Mega-200, I do review almost every run.
"Despite the high cost of living, it remains popular."
Dave Cook
N375
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