460 trannies
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New User
Joined: Feb 2000
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460 trannies
I'm going to be buying a mid 60s to early 70s shortbed F100 soon. Anyway, regardless of what it starts with, it's going to be treated to a 460 swap that will be pushing about 500-525 hp and close to 600ft/lbs torque. My question is what factory or aftermarket trannys will bolt up and handle this kind of power. I prefer manuals, but I'll stick with an auto if I buy a truck originally equipped with one. And, my mentality is the more gears the better (to a point). If I had my wishes, I'd put a Richmond gear 6sp. manual behind the 460, but I don't know if it would handle that much torque. Any input or ideas are appreciated. Thanks.
Neal
Neal
Mountain Pass
Joined: Apr 2000
Posts: 241
Likes: 2
From: Holland, Michigan
460 trannies
Your best bet would be get a C-6. Have it totally and PROFESSIONALLY redone by a well known trans shop in your area and add shift improver kit. C-6's steal a little more power than some tranney's, BUT they are nearly bulletproof (meaning the don't break down easily from mass amounts of power.)
Senior User
Joined: Aug 2002
Posts: 101
Likes: 0
From: Bowling Green, Ohio
460 trannies
Neal,
Look at the Tremec TKO 5 speed. It's an aluminum case 5 speed
(4th is 1:1, 5th is .68:1). It shares many dimensions with the
Toploader (and other Ford transmissions) 4 speed (same speedo
gear, same trans mount, 31 spline output shaft, same bellhousing
bolt pattern). The input shaft is a bit longer (requires an
aluminum spacer between the bellhousing and trans) and uses a
1 and 1/8th inch (26 spline) clutch disk. There are companies
on the web that will sell you a brand-new trans and the parts
necessary to install it in an older car/truck.
In terms of reliability, one manufacturer of new kit Cobras
uses the TKO behind their big-block (460) cars, and one of
the performance supply houses used a TKO behind their blown,
stroked 460 Mustang. I've been running a TKO in my Torino
(mildly warm 429 w/ a 4v) for two years without any problems.
Someone else on this site has a TKO in their truck too.
Ohio Bill
Look at the Tremec TKO 5 speed. It's an aluminum case 5 speed
(4th is 1:1, 5th is .68:1). It shares many dimensions with the
Toploader (and other Ford transmissions) 4 speed (same speedo
gear, same trans mount, 31 spline output shaft, same bellhousing
bolt pattern). The input shaft is a bit longer (requires an
aluminum spacer between the bellhousing and trans) and uses a
1 and 1/8th inch (26 spline) clutch disk. There are companies
on the web that will sell you a brand-new trans and the parts
necessary to install it in an older car/truck.
In terms of reliability, one manufacturer of new kit Cobras
uses the TKO behind their big-block (460) cars, and one of
the performance supply houses used a TKO behind their blown,
stroked 460 Mustang. I've been running a TKO in my Torino
(mildly warm 429 w/ a 4v) for two years without any problems.
Someone else on this site has a TKO in their truck too.
Ohio Bill
Mountain Pass
Joined: Apr 2002
Posts: 106
Likes: 1
From: SF Bay Area
460 trannies
Ditto on what Ohio Bill said about the Tremec 3550 TKO. I've got one in my Cobra (along with a Ford Motorsport's Crate 460-535hp). I've got lots-o-friends running the same tranny in their Cobras, and we beat the heck of them, and they just keep going...
Hope this helps,
Randy R...
Hope this helps,
Randy R...
Senior User
Joined: Jun 2002
Posts: 423
Likes: 0
From: Oklahoma
460 trannies
The reasons for five and six-speed transmissions are (1) the addition of overdrive or (2) to keep an engine within it's powerband during the shift. The 460 is capable of gobs of torque over a wide rpm band, so #2 doesn't apply and #1 applies if you are doing a lot of highway driving; which doesn't sound like what you are intending.
My choice would be a wide-ratio GER or TCI C6 and a 3.50 or 3.70:1 rear axle ratio and use lower-profile tires at the strip and switch to taller ones for everyday street/highway use.
My choice would be a wide-ratio GER or TCI C6 and a 3.50 or 3.70:1 rear axle ratio and use lower-profile tires at the strip and switch to taller ones for everyday street/highway use.
