Re: Need some opinions on which torque converter
[Re: gregsdart]
#2709418
10/23/19 09:40 AM
10/23/19 09:40 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,514
So. Burlington, Vt.
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PS forgot that these numbers were with the Dyno's 1-3/4" test headers, went to put our 2" headers on and ran into fitment problems with the dyno so that may account for choking the engine somewhat. The 1-3/4” header did two things. It boosted the low end TQ substantially, and killed off a fair amount of top end power....... compared to something like a header with 2” primary tubes and 3.5” collectors. If you’re going to run 2” headers in the car........ you won’t have that 620tq@2800.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need some opinions on which torque converter
[Re: jlatessa]
#2709427
10/23/19 10:04 AM
10/23/19 10:04 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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Posts: 14,514
So. Burlington, Vt.
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MP 484 cam....... 68* overlap @ advertised duration 20* overlap @.050
New bullet roller ....... 72.5* overlap@ advertised(.020) duration 40.5* overlap @.050
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need some opinions on which torque converter
[Re: jlatessa]
#2709434
10/23/19 10:20 AM
10/23/19 10:20 AM
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Joined: Jan 2003
Posts: 12,284 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,284
Benton, IL.
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I have fought this fight. Wanted a tight street converter for my 540 Hemi so that the tranny didn't feel like a slush box on the street. Started with PTC which has been my go-to converter builder for the last few converters and have always been happy with them. Until this last go around wanting a tight converter for a very torquey street engine. They tried twice. Flash was mid to upper 4k. Driving around was not crisp at all, just was way too spongy. Called Lenny at UCC. First, he told me that the 9" was really too small for what I wanted, but that the 11" stuff was getting difficult to find and very expensive. I told him that I had some motor home converters laying around but he said that there were no parts for them, so........... I sent the converter to him, he made a few adjustments and made a few suggestions on my end such as a fluid change. And it is much better now. Flash is about 4k and it is much crisper around town. Frankly, I would like it to be a bit snappier down low, but it is not bad like it is. My car likes to idle about 950 and he helped that, too. And one last thing, check the snout on what ever converter you get. The last two that I have gotten have been a little bit too big to seat in the crank and I had to dress them down a bit. I only figured that out a few years ago after fighting converter bolts that wouldn't stay tight.
Master, again and still
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Re: Need some opinions on which torque converter
[Re: jlatessa]
#2709450
10/23/19 11:01 AM
10/23/19 11:01 AM
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Joined: May 2011
Posts: 4,489 northern,Ohio,USA
Clanton
master
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master
Joined: May 2011
Posts: 4,489
northern,Ohio,USA
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Thanks for the heads-up on the snout , Dave.
How did you check it, by feel, bluing or measuring?
Joe
I measured from the pump drive down to the inside of the pilot then pump drive down to ring gear then ring gear to pilot outside with the vert on a counter top.I think .020 was min spec. ps;measure from the bolt lug to the top of the pilot with a straight edge on the vert for pilot ht.[about .625"]
Last edited by Clanton; 10/23/19 11:45 AM.
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Re: Need some opinions on which torque converter
[Re: Clanton]
#2709458
10/23/19 11:11 AM
10/23/19 11:11 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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So. Burlington, Vt.
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If I were buying it, I wouldn’t really want them to try and “match” the converter to the combo.
The conversation would be more like, “make me a 10” unit as tight as possible”.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need some opinions on which torque converter
[Re: jlatessa]
#2709460
10/23/19 11:15 AM
10/23/19 11:15 AM
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Joined: Jan 2003
Posts: 15,439 Val-haul-ass... eventually
BradH
Taking time off to work on my car
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Taking time off to work on my car
Joined: Jan 2003
Posts: 15,439
Val-haul-ass... eventually
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Another question; "tight" meaning less span between the upper and lower lock-up specs?
So maybe for us, like 2800-3200?
Thanks, Joe Well, it's kind of subjective. "Tight" to me means it still drives nicely on the street and responds well to part throttle below the flash stall speed. "Loose" to me means the car feels "slushy" and doesn't respond well to the throttle below the flash stall, even if it locks up well at WOT. It's a streetability thing, I suppose.... and probably a tough thing to achieve for builders of fairly high-stall street/strip converters.
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Re: Need some opinions on which torque converter
[Re: BradH]
#2709487
10/23/19 12:08 PM
10/23/19 12:08 PM
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Joined: Aug 2003
Posts: 43,303 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,303
Bend,OR USA
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Last edited by Cab_Burge; 10/23/19 12:11 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: Need some opinions on which torque converter
[Re: jlatessa]
#2709643
10/23/19 08:17 PM
10/23/19 08:17 PM
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Joined: Jan 2003
Posts: 12,284 Benton, IL.
DaveRS23
Special needs idiot
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Special needs idiot
Joined: Jan 2003
Posts: 12,284
Benton, IL.
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My conversation with Lenny at UCC was that I wanted as tight a converter as I could get given the limitations of a 9" converter dealing with gobs of torque. He said this is as tight as he can get a 9".
He also recommended that I run the thicker John Deere Hy-Gard rather than ATF. And not the generic brands of hydrostat fluids either. It seems that the Hy-Gard has the standard and then has a low viscosity version. Most generic brands tend to be the thinner viscosity. And, of course more viscosity helps tighten up the converter. I also run a big tranny cooler to help all it can. Hy-Gard is roughly equivalent to 10w30 oil. I have thought about trying some 50 or 60 weight oil mixed with the tranny fluid, but I just haven't gotten around to it. I do have some ATF in there just to give it some color, making it easier to see on the stick.
As for the snout, I just lightly touched up the snout and crank until it would go together.
Master, again and still
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Re: Need some opinions on which torque converter
[Re: DaveRS23]
#2709739
10/24/19 09:41 AM
10/24/19 09:41 AM
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Joined: Jan 2003
Posts: 14,514 So. Burlington, Vt.
fast68plymouth
I Live Here
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I Live Here
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So. Burlington, Vt.
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He said this is as tight as he can get a 9". Which is why I’d be talking with someone about a little bigger unit. 9.5” or 10”......... probably a 10”.
68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123 Dealer for Comp Cams/Indy Heads
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Re: Need some opinions on which torque converter
[Re: fast68plymouth]
#2710282
10/26/19 11:56 PM
10/26/19 11:56 PM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 27,421
Balt. Md
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My 9.5 Dynamic works nicely in my 63 behind my 493. It drives great all the time as I can cruise the back roads at 2200 rpm and I don't notice any slippage just like when I drive the highway at 60 mph it just drives great all the time. It flashes to about 4000 or so at the track and works ok for my mild street car. I can hit it at any rpm when driving it and its always right there and just never seems to sound like its slipping any to me at any speed I drive. Its been in my car since 2006 as it was actually built for my old 440 but I am very pleased with it. Ron
Last edited by 383man; 10/26/19 11:56 PM.
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