Converter company suggestions for my application

Brad Hawk · 11-01-2020, 02:15 PM

I'll put the car back on the track w/ the current -- and old -- Dynamic (Lupo) 9.5" piece that was in the car previously to get a baseline w/ the new engine combination. With that combination, it would flash to approx 4500 from a 2000 launch and showed about 8% slippage on the big end (1/4 mile).

Being a dual-purpose car, I don't presume the converter can be set "on kill" and still actually drive the pig to the track. However, my expectation is I'll be getting recommendations to go w/ a tight 8".

The torque peak's moved up from about 4900 to 5100, and the HP peak has moved up from 6300 to 6800. Power-wise, the torque curve has picked up across the full 3500-7200 dyno pull range and the peak HP is is up about 60 HP. Trap RPM will probably increase from 6800 to maybe 7200 now.

It's a BB Mopar (440 stock-stroke), and a number of BBM bracket racers were using Ultimate w/ good results before Lenny sold it (to one of his former employees, IIRC).

I really don't have any complaints w/ Dynamic based on how the 9.5" has performed, but they haven't even updated their website in 10+ years. I have no sense for what they're doing today or what their rep is now.

Have never used ATI, but I could drive there from where I live in Northern Virginia and talk to them face-to-face, if a better approach than over the phone. I have talked w/ their reps at the track, but not in many years.

Also not against going somewhere else, so any feedback or thoughts as to what converter company might have a better handle on a combination like mine is appreciated. FWIW, it's approx 3800# w/ driver and should pick up noticeably over the old engine that was good for mid-to-high 10s as driven to the track.

My apology if this post seems to bounce around in terms of how info is presented. Thx - Brad

Brad Hawk · 11-01-2020, 04:39 PM

FYI, I also posted this under the Bracket Racing forum, in case that's considered more appropriate. However, that one doesn't appear to get much traffic, based on the dates of the most recent posts. Thx

Larry Hill · 11-01-2020, 06:45 PM

Talk to Charlie @ ATI he is very knowledgeable. My stuff seems to like the ATI stuff.

coolcanman · 11-01-2020, 06:58 PM

Dynamic. Newark De frank LUPO. SEAN WILEY. YEARS OF EXPERIENCE

pmrphil · 11-01-2020, 09:50 PM

Lenny is still at Ultimate, they moved the shop to S.C. and Lenny is staying for at least a year or so until Montgomery has a good feel for what he's learning from Lenny.

Gmirza · 11-01-2020, 10:21 PM

I have a Dynamic 9.5 in my street car, last winter I had Dymanic update and tighten it up. It works great and is very streetable. I dealt with Sean, good service reasonable price.
Any of the big converter builders can build what you need. Dynamic was always good with bb mopar stuff. I have had good luck with an ATI in my small block stocker.
I think Dynamic and Ultimate are small operations and you get more personalized service, ATI is more of a big business, but good quality parts.

Dragsinger · 11-02-2020, 09:22 AM

Ultimate is still a good choice. I have bought several converters from Ultimate and all perform as expected.

Rsmith38 · 11-02-2020, 09:47 AM

Call Bob at 401-474-3026 for some personal (FREE) advice. Stk 1051

11-01-2020, 02:15 PM	#1
Brad Hawk Junior Member Join Date: Nov 2009 Posts: 21 Likes: 1 Liked 2 Times in 1 Post	Converter company suggestions for my application I'll put the car back on the track w/ the current -- and old -- Dynamic (Lupo) 9.5" piece that was in the car previously to get a baseline w/ the new engine combination. With that combination, it would flash to approx 4500 from a 2000 launch and showed about 8% slippage on the big end (1/4 mile). Being a dual-purpose car, I don't presume the converter can be set "on kill" and still actually drive the pig to the track. However, my expectation is I'll be getting recommendations to go w/ a tight 8". The torque peak's moved up from about 4900 to 5100, and the HP peak has moved up from 6300 to 6800. Power-wise, the torque curve has picked up across the full 3500-7200 dyno pull range and the peak HP is is up about 60 HP. Trap RPM will probably increase from 6800 to maybe 7200 now. It's a BB Mopar (440 stock-stroke), and a number of BBM bracket racers were using Ultimate w/ good results before Lenny sold it (to one of his former employees, IIRC). I really don't have any complaints w/ Dynamic based on how the 9.5" has performed, but they haven't even updated their website in 10+ years. I have no sense for what they're doing today or what their rep is now. Have never used ATI, but I could drive there from where I live in Northern Virginia and talk to them face-to-face, if a better approach than over the phone. I have talked w/ their reps at the track, but not in many years. Also not against going somewhere else, so any feedback or thoughts as to what converter company might have a better handle on a combination like mine is appreciated. FWIW, it's approx 3800# w/ driver and should pick up noticeably over the old engine that was good for mid-to-high 10s as driven to the track. My apology if this post seems to bounce around in terms of how info is presented. Thx - Brad Last edited by Brad Hawk; 11-01-2020 at 02:20 PM.

11-01-2020, 04:39 PM	#2
Brad Hawk Junior Member Join Date: Nov 2009 Posts: 21 Likes: 1 Liked 2 Times in 1 Post	Re: Converter company suggestions for my application FYI, I also posted this under the Bracket Racing forum, in case that's considered more appropriate. However, that one doesn't appear to get much traffic, based on the dates of the most recent posts. Thx

11-01-2020, 06:45 PM	#3
Larry Hill Live Reporter Join Date: Oct 2004 Location: Hickory, Ky Posts: 10,628 Likes: 1,918 Liked 10,678 Times in 2,221 Posts	Re: Converter company suggestions for my application Talk to Charlie @ ATI he is very knowledgeable. My stuff seems to like the ATI stuff. __________________ IHM Used Parts https://ihmusedparts.com 888-821-1817

11-01-2020, 06:58 PM	#4
coolcanman Junior Member Join Date: Oct 2016 Posts: 34 Likes: 1 Liked 20 Times in 13 Posts	Re: Converter company suggestions for my application Dynamic. Newark De frank LUPO. SEAN WILEY. YEARS OF EXPERIENCE

11-01-2020, 09:50 PM	#5
pmrphil Member Join Date: Aug 2010 Location: CT Posts: 456 Likes: 1,793 Liked 346 Times in 150 Posts	Re: Converter company suggestions for my application Lenny is still at Ultimate, they moved the shop to S.C. and Lenny is staying for at least a year or so until Montgomery has a good feel for what he's learning from Lenny. __________________ Phil Molski PMR Performance S/C 1623

11-01-2020, 10:21 PM	#6
Gmirza Member Join Date: Dec 2018 Location: Massachusetts Posts: 174 Likes: 201 Liked 251 Times in 93 Posts	Re: Converter company suggestions for my application I have a Dynamic 9.5 in my street car, last winter I had Dymanic update and tighten it up. It works great and is very streetable. I dealt with Sean, good service reasonable price. Any of the big converter builders can build what you need. Dynamic was always good with bb mopar stuff. I have had good luck with an ATI in my small block stocker. I think Dynamic and Ultimate are small operations and you get more personalized service, ATI is more of a big business, but good quality parts. __________________ George Mirza D/SA 1236 ‘71 Duster 340 Last edited by Gmirza; 11-01-2020 at 10:31 PM.

11-02-2020, 09:22 AM	#7
Dragsinger VIP Member Join Date: Jul 2008 Location: Liberty City [East Texas] Posts: 1,760 Likes: 5 Liked 99 Times in 60 Posts	Re: Converter company suggestions for my application Ultimate is still a good choice. I have bought several converters from Ultimate and all perform as expected. __________________ Larry Woodfin 471W

11-02-2020, 09:47 AM	#8
Rsmith38 Member Join Date: Mar 2011 Posts: 186 Likes: 0 Liked 28 Times in 15 Posts	Re: Converter company suggestions for my application Call Bob at 401-474-3026 for some personal (FREE) advice. Stk 1051