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Old 06-25-2014, 12:23 PM
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Default Converter change questions

With my bolt on car, stock rear, 3.23 gears and drag radials, my yank ss3400 would help my car cut 1.69-1.72 60ft times and 1/8 mile was 7.90-8.1's at 86mph. I have since installed a Tooley stage 3 cam, (231/242 .617"/.592" 112+2) Moser 9" with 4.11's, LCA's and umi adjustable torque arm. Pinion angle at -2. Dyno'd 380rwhp on a dynojet and now cuts 1.75-1.78 60ft and runs 7.75-7.85 at 88mph. I have sent my converter off to yank for a restall to ss4000 specs. I was really looking to run 7.50's with this setup at 90+ mph. Is this a realistic goal? I am hoping I can cut mid 1.6's and get there. What do you guys think? Thanks in advance.
Old 06-25-2014, 12:40 PM
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I had a yank SS 4000 Prc stage 1 ls6 heads and a TR trak cam with 410 gears. My car did 1.44-1.45 60ft at 3380#.
Old 06-25-2014, 12:46 PM
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My car weighs 3650 with driver, stock shocks and springs all around
Old 06-25-2014, 02:24 PM
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Converter is not going to change the MPH unless it is more efficient, so you may have to add some HP to go 90+.

Gearing up may help the ET & MPH with the new cam, but run it with the new converter first.

Al
Old 07-11-2014, 03:07 PM
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I would do some more suspension work. Get some DA shocks for the front/rear and a drag bar for the back. These two things will help considerably. Oh and another thing remove the front say bar.

Last edited by jlrz28; 07-11-2014 at 03:14 PM.
Old 07-11-2014, 06:53 PM
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The converter change, will help with the ET but not as much with the MPH.
Old 08-07-2014, 10:01 AM
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UPDATE: Best time with the SS3400 was a 7.80 at 88mph with a 1.72 60ft 1900 da.
Restalled to 4000 and on a similar da, car went 7.48 @ 90mph with 1.57 60ft. Was on a MT Radial Pro both times. I was very satisfied.
Old 08-07-2014, 12:44 PM
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Congrats.

So before the re-stall was the car hooking but lazy down low?

I'm probably going to re-stall my 5th gen at some point, stuck in the 1.66/ 7.7's right now.
Old 08-07-2014, 04:26 PM
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Originally Posted by Pro Stock John
Congrats.

So before the re-stall was the car hooking but lazy down low?

I'm probably going to re-stall my 5th gen at some point, stuck in the 1.66/ 7.7's right now.
yes, I could get it to dead hook on the hwy without a burnout on the MT Pros at 15lbs, now....not so much.
Old 08-07-2014, 09:45 PM
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Nice times! A little more gear and maybe some less weight might get you a lot closer to 6's.
Old 08-09-2014, 11:47 AM
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I have a 150 shot of nitrous to do that. Just waiting on welding in my subframe connectors!
Old 08-09-2014, 05:50 PM
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your new 60's are close to mine on motor with mt PTC 4000 nitrous converter so my guess is it will respond very well with that converter. Should be in the 1.4s easily.

Also are you pushing up against the stall or leaving off idle. Mine does better pushing up against the stall. Try both ways, they're all different
Old 08-09-2014, 08:21 PM
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I am leaving at about 1800 and letting it flash, I will try to run up against it next time. Your 10.28, was that on a 150 shot?
Old 08-10-2014, 07:45 PM
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Car ran 10.47 on 170 hp shot progressed over 1.5 seconds, 10.28 was about 185 hp shot progressed over 0.7 seconds. I have about 210 in it now but haven't been back.
Old 08-11-2014, 04:22 PM
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Nice improvement...



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