1972 Gran Torino Sport - 17 year barn nap find - Page 19 - Ford Muscle Forums : Ford Muscle Cars Tech Forum
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post #271 of 272 (permalink) Old 09-20-2018, 06:58 PM Thread Starter
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Re: 1972 Gran Torino Sport - 17 year barn nap find

So, continuing on to the last piece of the puzzle, the driveshaft.

As about earlier noted I *thought* I could swap output yokes but noooooope.

My specific 1972 Toploader uses a larger OD and longer length output yoke as compared to the Tremec 5 speed. So I figured I'd just swap the output yokes and I'd be ok.
Well, not so much...

Starting off with swapping the yokes, Tremec is on the left on the original Torino driveshaft:

And the end results when trying to fit up to the car...

Which led me to searching for a driveshaft dataform to fill out, as a trip to my local builder was in order.

After getting the measurements, and confirming with the shop of the overall distance, the rear end yoke

My local choice by recommendation is Advanced Driveshaft here in Omaha, NE. They have built a lot of driveshafts over the years, and they hold up.

After getting the dims and loading a my original driveshaft, and a spare aluminum F series driveshaft that I was considering having them cut down and balance, I opted for option#3 and went all brand new with a driveshaft rated for over 450HP at a minimum. For my street car, this is just perfect, stronger than I need.
I had them load it with a brand new output yoke to match the tremec and brand new Spicer USA made U-joints.

They had this built in 2-3 days. Dynamically balanced as I told them I have a habit of bangshifting and I want to make sure if I'm spinning 6400 RPM on the street at times I don't want her going kaboom!

Here we are back at home on a Friday night, and the different in length is a bit noticeable.

Last couple items, the new output seal:

New speedo cable gear and clip:

Additionally, there is a different in the retainer clips. Tremec uses a wider clip and metric bolt. Toploader uses a smaller but heavier gauge piece and SAE standard bolt.

Lastly I had to button up the mechanical linkage Z bar.

I posted before, but MDL part numbers:
speedo gear MD-506-1028-18, Yellow, $9.50
gear retaining clip MD-506-1029, $2.95
MD-320-2039 Hurst shifter, $107.95

Clutch set was built specific for my application. $310.00
MD-oo11Long26 {26 spline disc by accident, swapped in place of the correct 10 spline to match the Ford short input shaft kit}
Reference info:
Clutch Set, Organic, 11" Long, 26 spline, Mech T/O {mechanical throwout bearing}, NO pilot bearing, alignment tool, 1 year warranty

Clutch disc swapped to 281226-UL,1166A 11", 1-1/16" shaft size

Synchromesh-QT, qty 3, Amsoil, $12.95/qt

Spare seal for TKO input shaft, 1300-044-015, $3.50

Driveshaft, $294.25

Fortes Parts Connection:
TTC Turret Seal, $33.00
TTC Rear, 28 spline rear seal, $18.00

Last thing to do was button things up, by installing a new shifter boot. I still had my original 1972 shifter boot and it has a thick metal base encased by the boot rubber. I trimmed away the split boot and used that over the reproduction boot to clamp to the shifter floor hump. Topped off the Hurst handle with my T handle from the Toploader.

Last thing required after adjusting the freeplay of the mechanical linkage was a test drive for around 30 minutes...

I got home around 1:30AM, showered and crashed out.
Did I mention I was scheduled to go to an invite only car show put on by Hot Wheels 3 hours south in Kansas City?
Alarm was set for 4am. On the road by 4:45am.

More to follow...

1972 Torino GTS 351c 4v cj 4 speed
1973 Torino GTS-1979 F150 4x4
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post #272 of 272 (permalink) Old 09-20-2018, 07:51 PM Thread Starter
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Posts: 1,066
Re: 1972 Gran Torino Sport - 17 year barn nap find

So...why does a car person do some things, go places, and have the drive to want to wake up before the crack of dawn, drag their spouse out of bed as well, and say "CAR SHOW ROAD TRIP"

Well, this might sum things up pretty much:

I found out Hot Wheels was having an invite only car show and was a fun little show that I emailed them, and was invited to come down.
Saw the Twinmill2, Bone shaker, and some great local builds that were all competing for a chance to be selected as the next Hot Wheels.

It was a great assortment of vehicles, and the one that won the show and a 1 in 12 chance to go to Sema 2018 was of all things a 1948 Dodge school bus that was heavily massaged and converted into one hell of a Hot Rod RV that took over 5-6 years and a lot of man hours to build.

And YES, when in Kansas City, you find a local BBQ joint to enjoy.

And to answer your questions...
YES driving with the 5 speed was a new experience for the GTS.
YES the drivability over the four speed was a HUGE improvement...
YES I was cruising at a good clip.

While I won't say what our average speed we were turning was on a very empty interstate at 5AM...Let's just say 5th Gear with 2.75 rear gearing...we made excellent time.

1972 Torino GTS 351c 4v cj 4 speed
1973 Torino GTS-1979 F150 4x4
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