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05-07-2013, 04:53 PM
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#1 |
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Registered User
 
Join Date: Aug 2005
Location: Norman, OK
Posts: 465
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Promotion 7oohp 3650 vs T56
Since i need a new tranny what should I go with? I have a full T56 transfer for 2500 available. Or go with a new 3650 from promotion?
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05-07-2013, 05:03 PM
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#2 |
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Registered User
Join Date: Aug 2005
Location: Norman, OK
Posts: 465
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Re: Promotion 7oohp 3650 vs T56
More info on the T56 20000 comes with dual zoom clutch with1k on clutch new bell housing, drive shaft, and 26 spline shaft installed. Internals are stock except shaft being installed.
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05-07-2013, 06:33 PM
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#3 |
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Registered User
 Join Date: Aug 2011
Location: Parkesburg, PA
Posts: 1,084
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Re: Promotion 7oohp 3650 vs T56
What gearing in the t56? 03/04 cobra trans? The stock gearing in the cobras is pretty lame. You neither save gas in the top gears, nor accelerate quicker in the bottom gears.
Now, a couple of the other gear ratios put it leaps and bounds above the 3650 imo. |
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05-07-2013, 06:40 PM
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#4 |
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Registered User
Join Date: Aug 2005
Location: Norman, OK
Posts: 465
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Re: Promotion 7oohp 3650 vs T56
Its stock out of a 2004 cobra..
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05-11-2013, 01:24 AM
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#5 |
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Dark Knight
 
Join Date: Nov 2009
Location: Albuquerque, NM
Posts: 5,759
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T56 magnum for a car that needs to see street duty. Or a built auto. You are wasting time with anything else. Or just do a stock rebuild and be gentle with it.
Sent with a shot of DROID go fast
__________________
Vortech V2 S-trim, E85, A2A Treadstone, Comp cams, built engine, full exhaust, built rear, built 4r70, more mods. Tuned by me with SCT Advantage |
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05-11-2013, 06:58 AM
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#6 |
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Registered User
Join Date: Nov 2007
Location: Greenville, SC
Posts: 2,554
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Re: Promotion 7oohp 3650 vs T56
I wouldn't go with a Promotion trans. I also wouldn't go with a T56 out of a 03/04 Cobra.
__________________
03 white Mach1 JLT RAI | 1/2 spacer | Catback | 4.56s 7.76@87.8mph |
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05-23-2013, 12:49 AM
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#7 |
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Registered User
Join Date: Jun 2004
Location: beaumont texas
Posts: 1,344
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Re: Promotion 7oohp 3650 vs T56
I'd go with a t56 also. Its a stout transmission.
__________________
2004white mach1   2001 svt lightning 2011 Mitsubishi Evo X 1999 F250 7.3L |
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05-23-2013, 02:37 AM
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#8 | |
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Registered User
Join Date: Apr 2012
Location: glasgow ky
Posts: 440
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Re: Promotion 7oohp 3650 vs T56
Quote:
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03 azure blue mach1-on3 70mm 459/469 on 6.5 psi Speedy tuned |
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05-23-2013, 04:41 AM
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#9 |
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Registered User
Join Date: May 2007
Location: Leesburg, VA
Posts: 1,985
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Re: Promotion 7oohp 3650 vs T56
I say built 3650. Its cheaper than the t56 swap, better overdrive and doesn't have lame gearing.
__________________
2003 Azure Blue Mach 1 Stock bottom end/compression Eaton M112 Stock upper Stock lower K&N intake Built T56 Bassani mid length headers Bassani catted x pipe Bassani slash cut tip catback Stock 03 Cobra IRS 18x9/10 Forgestar F14 Tuned by Chris Macduff at IMA motorsports 429hp 407 tq @ 7.5 lbs of boost |
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05-23-2013, 12:49 PM
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#10 | |
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Registered User
Join Date: Aug 2011
Location: Tuskegee, AL
Posts: 402
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Re: Promotion 7oohp 3650 vs T56
Quote:
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04 GT Convertible 5spd with 04 Mach swap... (Old Setup): Tune, 4.30's, pulleys, intake, full exhaust, ported Intake, 90mm maf, Termi injectors, Comp 106100's... Only 348rwhp/324rwtq  Best 1/4: 12.29 @ 111mph with 1.79 60' Best 1/8: 7.88 @ 89mph with 1.73 60' (New Setup) Procharger P1-SC kit on 5-6lbs... Shooting for as close to 10's as possible... New Best 1/8: 7.12 @ 94mph with 1.57 60' New Best 1/4: 11.03 @ 126mph on 15x10 wheels (275/60 radial) (Race Weight 35xxlbs) |
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05-28-2013, 04:16 PM
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#11 |
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Registered User
Join Date: Feb 2012
Location: WI
Posts: 104
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Re: Promotion 7oohp 3650 vs T56
I have a built 3650 from Promotion and it's been working great ever since I put it in. Only thing is that there is some gear rattle below 2000rpm's in 4th if you start to accelerate. They say that a little bit of gear rattle can be expected and it's caused by the type of synchros (or something else I forgot) they use but does not effect reliability in any way. I mainly got it due to the price of a built 3650 vs price of a T56 swap. A built 3650 was quite cheaper and you don't really gain enough to justify the extra cost of going to a T-56 IMO.
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2004 Mach 1 Azure Blue Built 5.0L stroker P1SC w/ supporting mods Promotion 3650 with McLeod RXT clutch/flywheel 31 spline rear end w/ 3.73's JBA shorty headers, Magnaflow catted x-pipe, Borla Stingers Last edited by Saltyweasel; 05-28-2013 at 04:33 PM. |
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05-28-2013, 06:11 PM
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#12 | |
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Registered User
Join Date: Aug 2011
Location: Parkesburg, PA
Posts: 1,084
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Re: Promotion 7oohp 3650 vs T56
Quote:
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05-28-2013, 08:36 PM
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#13 |
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Registered User
Join Date: Jun 2007
Location: Las Vegas
Posts: 1,086
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Re: Promotion 7oohp 3650 vs T56
What is your intended goal for the car. What type of driving do you do mostly. What kind of power do you make or do you intend to make. And obviously what does your budget allow. Those would be the considerations I would start with.
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