Normally the stock T-5 is rated at about 300 ft-lb of torque capacity. While this is fine for stock or lightly modified engine combinations, especially running small street tires, it isn't generally enough for most of today's high powered street/strip engine combinations, especially those running bigger, more aggressive tires. This is where the G-Force T-5 kit comes into play. Although we do not like to put torque or horsepower ratings on our products due to the vast differences in clutch, engine, chassis, tire, and mounting combinations, we can give a very rough estimate. There are simply too many variables to consider when trying to figure out how much power or torque a transmission will take in a particular application. Generally, it can be assumed that with the available upgraded mainshaft, the G-Force T-5 kit will handle roughly 600 hp or 500 ft-lb. or torque in a 3300 lb. vehicle running drag radials at the track with a moderate clutch upgrade. Obviously this is just a rough estimate regarding the power and torque handling capability, but it should give some idea as to what the G-Force T-5 kit will handle in your particular application.

Originally posted by RegaPlanet
ok lets just quote then



500ft-lbs of torque.

You better email or call them yourself for their recommendation and I'm sure they will recommend their top kit for over 400lb-fts. but that they still use the same mainshaft in all three kits which is good for 500ft-lbs.

Originally posted by RegaPlanet
Oh, I was just trying to prove that I'm better than you

True Bolt-in dog-ring replacement gearsets capable of handling up to 600 streetable * horsepower
Kit Prices (you build it using your transmission) 1st to 4th gear sets, includes 1st,2nd,3rd mainshaft gears, 26 spline input shaft with input drive gear (4th), complete cluster shaft with gears 1st, 2nd, 3rd, and cluster drive gear (4th), and 1st/2nd and 3rd/4th sliders, hubs and bronze shift forks for 1st/2nd and 3rd/4th
$1,550.00

Overdrive gear set (.90 when available) $360.00

Upgraded Mainshafts (not included with gear kits)

ASTM 9310 High Nickel Steel $295.00

ASTM 4340-300M Thru Hard Premium Alloy $495.00


Send us your T-5 and we'll install the kit for you (labor only) Does not include rebuilt/small parts kit $250.00

G-Force T-5 kit installed utilizing new T-5 core. These transmissions utilize factory mainshafts and overdrives unless otherwise specified by customer. $2,500.00


G-Force T-5 kit installed utilizing used T-5 core. $2,100.00

Prices Subject to change without notice


G-Force T-5 Synchronized Upgrade Kits
True Bolt-in synchronized replacement gearsets capable of handling up to 600 streetable * horsepower
Kit Prices (you build it using your transmission) 1st to 4th gear sets, includes 1st,2nd,3rd mainshaft gears, 26 spline input shaft with input drive gear (4th), complete cluster shaft with gears 1st, 2nd, 3rd, and cluster drive gear (4th) $1,000.00

Overdrive gear set (.90 when available) $360.00

Upgraded Mainshafts (not included with gear kits)

ASTM 9310 High Nickel Steel $295.00

ASTM 4340-300M Thru Hard Premium Alloy $495.00

Send us your T-5 and we'll install the kit for you (labor only) Does not include rebuilt/small parts kit $250.00

G-Force T-5 kit installed utilizing new T-5 core. These transmissions utilize factory mainshafts and overdrives unless otherwise specified by customer. $2,000.00

G-Force T-5 kit installed utilizing used T-5 core. $1,600.00


Prices Subject to change without notice