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#1
07-18-2016, 08:48 AM
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Converter update
Just a Little update on my 9" Ultimate Conv, My 60's this year in good air were 1.41-1.42, but as it got warmer out it really started falling off, so i was thinking something happened to sprag, 1.52-1.54. So I sent it in to lenny at Ultimate and he looked at it, and couldn't find anything wrong, so I had him set it up more for this combo and the dyno sheet, loosening it, so i could leave higher without pushing thru beams while on the brake. I had been leaving at 2500 and it was 60 fting great as i said above , but once it warmed up tho summer heat stuff it really fell off. So This sat i left at the same 2500 and it was a tad better at 1.50-1.52, 10.41.Shifted higher first run at 6500, second run same 6300 which gave more mph 129.13, compared to 128.84@6500.Drops about 800 on a 6300 shift to 5500. I was ok better ,but not what I expected , so after trying some jetting and that not doing anything, I went back to my same jetting in the first runs 92 square, and turned it up to 3000, and it went 1.44@10.30@129.26... and has the day warmed up only dropped to 1.45, I stayed with the current tire pressures i had been running so no additional tuning there yet at 14.5.... I am pleased with the outcome and she should really sing come fall weather! and its tight up top still going thru just above 6500!!
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74  2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's Last edited by grandville455; 07-18-2016 at 09:03 AM. |
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#2
07-18-2016, 09:00 AM
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Sounds good!
What do you think the stall speed is for it now? (flash stall?) I would think a higher stall speed would help a lot for your combo. 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#3
07-18-2016, 09:04 AM
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John I wanted Lenny to loosen it up to about 53-5400, I'll have to throw a camera on my tach and watch it sometime...
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Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#4
07-18-2016, 09:10 AM
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Good 60 foots for the combo. Basically an off-idle launch with a real hi-stall converter right?
my hi -idle was about 1500 rpm to off-idle on a 2800-3200 10" converter, tight for Street and felt like a clutch dump on the launch. Not getting that effect with the Switch-Pitch in either stall position.
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12.24/111.6MPH/1.76 60'/28"/3.54:1/SP-TH400/469 R96A/236-244-112LC/1050&TorkerI//3850Lbs//15MPG/89oct Sold 2003: 12.00/112MPH/1.61 60'/26"x3.31:1/10"/469 #48/245-255-110LSA/Q-Jet-Torker/3650Lbs//18MPG 94oct Sold 1994: 11.00/123MPH/1.50 60'/29.5"x4.10:1/10"/469 #48/245-255-110LSA/Dual600s-Wenzler/3250Lbs//94oct |
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#5
07-18-2016, 09:12 AM
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Quote:
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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#6
07-18-2016, 10:35 AM
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I think a tranny brake would help a lot.
You already have a 2 step, why not a brake? 
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John Wallace - johnta1 Pontiac Power RULES !!! www.wallaceracing.com Winner of Top Class at Pontiac Nationals, 2004 Cordova Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats KRE's MR-1 - 1st 5 second Pontiac block ever! "Every man has a right to his own opinion, but no man has a right to be wrong in his facts." "People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates |
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#7
07-18-2016, 11:12 AM
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Quote:
__________________
Darby 74 Grandville 2Dr 455 c.i 4550# 2011 1.60 60 ft,7.33@94.55-11.502@117.74 2017, 74 firebird -3600 lbs (all bests) 1.33 60 ft, 6.314@108.39 9.950@134.32 M/T 275/60 ET SS Drag Radial 2023,(Pontiac 505) 1.27 60 ft, 5.97@112.86, 9.48@139.31.... 275/60 Radial Pro's |
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