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04-07-2018, 02:22 PM | #1 |
Registered User
Join Date: Apr 2016
Location: Fresno CA
Posts: 69
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Can GM T-56 guts swap into Ford T-56?
So as far as I can tell there's absolutly no performance advantage to swapping my Mach 1s' 5-Speed for a Cobra 6-Speed. The only thing the Cobra 6-Speed offers is a tweener overdrive gear that halves the massive drop off of the current 5-Speed. Both O/D ratios are virtually the same.
So if I went 6-Speed I would much rather have the GM ratios ending with a .5 overdrive so I could combine that transmission ratios with a significant rear gear ratio bump. Like 4.30s or something. Current Mach 1 has 3.55s which in the stock .62 O/D ratio puts its' final drive ratio at 2.20 Mach 1 with 4.30 gears and the GM .5 ratio makes the final drive ratio 2.15. All the gears in between get a nice torque multiplier jump especially 2nd through 4th for faster acceleration with no loss in cruising RPM and gas MPG. So is swapping Ford and GM T-56 guts possible? |
04-07-2018, 11:57 PM | #2 |
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Join Date: Nov 2003
Location: TX.
Posts: 2,511
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Re: Can GM T-56 guts swap into Ford T-56?
Although I don't have an answer for you, I was thinking about the 6 speed with the (.50) also. I've had 4.30s for over 20K miles. Highway cruising is a bit much but, acceleration can't be beat
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03 Mach DSG Build Date 07/25/03 Feb 09 N2O 10.91 @ 124.21(1.55 60ft) Feb 09 NA 11.85 @ 112.87 (1.60 60ft) |
04-17-2018, 09:08 PM | #3 |
Registered User
Join Date: Apr 2016
Location: Fresno CA
Posts: 69
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Re: Can GM T-56 guts swap into Ford T-56?
Yeah. That's why the .5 overdrive is so appealing to me. 4.30s and the same as stock cruising RPM with a boost to all the other gears that need it. I'll try and get an answer on some other forums if no one here knows.
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04-17-2018, 10:40 PM | #4 |
Can't be bridled
Join Date: Sep 2007
Location: Texas
Posts: 7,006
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Re: Can GM T-56 guts swap into Ford T-56?
If you can't get a straight answer from a forum, you can call pro-motion and ask.
http://promotionpowertrain.com/1233518.html
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2004 Mach 1 #6956 5spd w/IUP Eaton swap, longtubes, built 3.73 SRA 452hp/409tq dynojet🏁 |
04-21-2018, 09:12 PM | #5 | |
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Join Date: Apr 2016
Location: Fresno CA
Posts: 69
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Re: Can GM T-56 guts swap into Ford T-56?
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