North American Turbocoupe Organization



9-inch rearend driveshaft
turbo d Offline
Member
#1
Hey fellas. Just wondering if anyone here has a 9" in either an 87 or 88 tc? If so, what was used for a driveshaft? I'm not familar with the 9" rears, but I'm about to be. If anyone can shed some light, it'd be great. My thinking is I obviously need a different yoke, and a different lengthed shaft. My thought was go find a 3 or 4 inch dia aluminum shaft, either new or at a boneyard (possibly from a crown vic) and have it shortened and balanced?

thoughts?
thanks Darrell
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thecrusher315 Offline
Senior Member
#2
The crown vic one might be to big around. You want to stay with something with a 3" tube. I am not sure what the crown vic has but the police interceptors are around a 4" tube. The one piece shaft from an early to mid 90's aerostar fits nice and has a 3" tube. That is what I am running. They are plenty long enough to give you enough to cut to length. As far as the yoke goes, all you would need to do is get a crossover u-joint to fit the driveshaft yoke one way and the 9" yoke the other....Tommy
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Jeff K Offline
Administrator
#3
Why would you put a 9" in a TC? The 9" is HEAVY compared to the 8.8, as well as being less efficient (eats more HP) due to the position of the pinion gear on the ring gear. A 9" is really total overkill on a 2.3T.
Jeff Korn

88 Turbo Coupe: Intake and exhaust mods, T3 turbo at 24 psi, forced air IC, water injection, BPV, Ranger cam, subframes, etc., etc.
86 Tbird 5.0 (original owner): intake, exhaust, valvetrain mods, 100 HP N2O, ignition, gears, suspension, etc., etc.
05 Taurus SEL Duratec daily driver
04 Taurus Duratec (wifes car)
02 Pontiac Grand Prix GT
95 Taurus GL Vulcan winter beater
67 Honda 450 Super Sport - completely customized
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turbo d Offline
Member
#4
thanks for the reply Tommy. Jeff, I'm not putting a 9" rear in a tc, it's in, and that part of the install is done. I'm just wondering about the driveshaft, and if anyone else has installed a 9-inch. I know the 9-inchers are heavier and less efficent then the 8.8s. Though I still have yet to come up with the weight difference. Also, I already have a solid running, streetable 88tc with a 4cyl. This new project will be v8 powered, and a full race/trailer queen type car. I'll try and post some pics soon.
thanks fellas
Darrell
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Rod K Offline
Senior Member
#5
I am using a Crown Vic driveshaft in my TC with no problems. You will need to change the front yoke and not use the rear yoke if going with the 9". They make a universal joint that will bolt to the 9" using the u bolts and will fit the driveshaft yoke.
Rod Kiser, '88TC, 5 speed, 5 lug, Cobra 13" front brakes, Mark VII 11 1/4" rear disc brakes, PiMP'n, Bullit wheels, ATR 3" exhaust, Aluminum driveshaft, EDIS, 60 LB injectors, gutted upper & ported lower. NATO Member
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