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Author
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Topic: Transmission Expectations
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kcode
Gearhead Posts: 3122
From: alvaton,ky,usa Suburb of Bowling Green, M&M #79, MCA #29208
Registered: Jun 99
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posted 01-17-2005 09:55 PM
   
Didn't want to steal Dons T-5 gears thread so I'll start another.My thoughts of getting a Lentech AOD faded when I started adding up costs versus replacing the old T-5 with a new T-5Z, besides that I found a T-5Z. With my old T-5, which is shot, I had miserable 60' times. Best was 1.80 with 26 x 10.5 ET Streets and 3.89 gears. The RPM drop between first and second (3.35 first 1.99 second) seemed alot since I had traction issues going into second. When I swap to the T-5Z with a 2.95 first gear and a 1.94 second, will I have the same issue. Currently shifting at 6200-6300. Also should I expect better launching? My current best is [email protected] This is in my 65 kcode coupe:
347
Comp 282S
Victor Jr
750 DP Quick Fuel
Edelbrock RPM Heads 1.90 intakes All suggestions will be graciously accepted.
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Mike Golliver
MCA Gold Card Judge-Modifieds
65 Kcode coupe 347 stroker modified 5-speed MCA Retired
66 convertible-3 dueces and a 5-speed with a 289
89 T-Bird Super coupe
01 Mustang GT Convt
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Moneymaker
Administrator Posts: 26513
From: Lyons, IL, USA
Registered: May 99
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posted 01-17-2005 10:20 PM
The torque of the 347 is better suited to the 2.95 gears Mike.
You can realistically expect a sixty foot decrease of .010 to .015 which you can double in 1/4 mile ET.------------------
Alex Denysenko
Co-Administrator and Moderator NHRA/IHRA/SRA member and licensed Superstock driver
NHRA and IHRA SS/LA & SS/MA National Record Holder '00,'01,'02,'03,'04 &'05
First SS/MA in the TENS!
IHRA division 5 Superstock Champion
Fleet of FoMoCo products including 88 ASC McLaren Mustang #28 The Barry of BarrysGrrl Quote #1: "I never met a magazine mechanic I liked."
Quote #2: "Make sure brain is in gear before engaging mouth!"
Quote #3: "If you can't run with the big dogs, stay on the porch!"
www.moneymakerracing.com
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Big D
Gearhead Posts: 5249
From: WELLS, NEVADA USA
Registered: Nov 2000
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posted 01-18-2005 09:58 PM
Mike,,That spread in ratios from 1st to 2nd was my concern also.. But hell,, I could hit 2nd anyway..  Thanks for the info Alex.. ------------------
Don
6T6 Fastback
331 STROKER, T-5
Royal Blue Metallic w/Red-Blue Ghost Flames
http://mustangsandmore.50megs.com/MembersPics/BigD.html
First Time out..
13.384 sec @ 103.388 mph
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Big D
Gearhead Posts: 5249
From: WELLS, NEVADA USA
Registered: Nov 2000
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posted 01-18-2005 10:07 PM
Also,, My 331 pulls hard and mixing the 2:95's with the 4:00 rearend gears,, I hoping that should be a pretty good fomular.. Using 26x10 M/T Drags on 10x15 Wheels.. How about that Alex.. ------------------
Don
6T6 Fastback
331 STROKER, T-5
Royal Blue Metallic w/Red-Blue Ghost Flames
http://mustangsandmore.50megs.com/MembersPics/BigD.html
First Time out..
13.384 sec @ 103.388 mph
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Fastymz
Moderator Posts: 19583
From: Reno Nv USA MEM#1240
Registered: Apr 2001
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posted 01-18-2005 10:15 PM
Don, this is a fun site for playing with gears. I know nothing replaces real world, but it might get you close.  http://www.drivetrainsuperstores.com/calculate.asp With your new set up you'll have an even lower gear in first. Old set up was 6.90 total and the new will be 6.95 total.
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SCOOP
oddly obsessed with big scoops on little Mustangs 65 coupe 351w C4 Big Boss 429 hood scoop,8" 3.40 TracLoc. My Pics [This message has been edited by Fastymz (edited 01-18-2005).]
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