[DeTomaso] Pantera shift linkage modification
Larry Stock
larrys at panteraparts.com
Fri Mar 25 11:55:24 EDT 2022
I believe that you are wasting your time Dan.
We had a 71 Pantera here that we fought with not getting either 5Th or reverse on. Finally noticed that DeTomaso listed in their parts list an engine mount spacer that was 3/16" tall. We put that in under the engine mount base and everything worked perfectly. If 3/16" engine alignment makes that much difference, I hold no hope for you except using the cable shifter approach.
Larry
On 3/25/22, 12:25 AM, "DeTomaso on behalf of dan" <detomaso-bounces at server.detomasolist.com on behalf of dan at excaliburre.com> wrote:
I'm going to first try a smaller outside diameter U joint with an inset
set screw.
I believe there are some manufacturers.
Next, try raising the shift rods and using a lateral rod support/heim
joint connected to the rear of the head or the bellhousing.
This would also make for a level rod assembly, rather than the current
down/up which feels like it would create cleaner shifting geometry.
Also, anchoring to the engine / transaxle should reduce the flex on
torque, turns and hole-shots, which is how I prefer to drive a Pantera.
Next, if necessary, taking one inch off the front shift rod and getting
a longer middle rod (unless I get lucky and have enough adjustmentent
at the turnbuckle).
This would be great because the U joint would stop 1/2" before hitting
the engine bay.
Or maybe all three?
Dan
Sent from my Verizon, Samsung Galaxy smartphone
-------- Original message --------
From: bill gaino <[1]gaino at earthlink.net>
Date: 3/24/22 5:33 AM (GMT-08:00)
To: [2]dan at excaliburre.com
Subject: Re: [DeTomaso] Pantera shift linkage modification
Dan, Perhaps you could rotate the U joint away from the block, the bolt
head. Remove some of the bolt head? Extent the Trunion? 6 inches it a
major change. I suggest only enough clearence to clear the obsticcle.
Maybe even grind the block? I had to make some adjustents to linkage
changing from a dash 1 to a 2
Bill 1362
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fref=ts
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-----Original Message-----
From:
Sent: Mar 24, 2022 1:27 AM
To:
Subject: [DeTomaso] Pantera shift linkage modification
I have a tricky situation with the shift linkage on "The Beast".
Shifting into 3rd the U joint bolt hits the side of the engine bay and
keeps
knocking it out of adjustment.
I can't move it to the right because going into 2nd and 4th the shifter
rod
hits the bellhousing.
I have to fight to get into any of those gears.
This is likely because of the modifications made to convert to the SBC.
I'm going to try and raise the shift rod about six inches to get into a
wider gap.
I'd have to move the eyebolt from the frame to a connection point on
either
the bellhousing or the back of the cylinder head. I wonder if anyone
has
tried this before?
It seems to make sense having the shift rod anchored to the engine
since the
flexing under torque in a racecar moves the engine, which the transaxle
is
obviously attached to, so the shift linkage would move with the engine
and
transaxle.
Also, this would keep the shift rod level between the shifter and the
transaxle, rather than dipping down to the frame, and then back upwards
to
the transaxle.
Make sense?
Dan
I have a tricky situation with the shift linkage on "The Beast".
Shifting into 3^rd the U joint bolt hits the side of the engine bay and
keeps knocking it out of adjustment.
I can't move it to the right because going into 2^nd and 4^th the
shifter rod hits the bellhousing.
I have to fight to get into any of those gears.
This is likely because of the modifications made to convert to the SBC.
I'm going to try and raise the shift rod about six inches to get into a
wider gap.
I'd have to move the eyebolt from the frame to a connection point on
either the bellhousing or the back of the cylinder head. I wonder if
anyone has tried this before?
It seems to make sense having the shift rod anchored to the engine
since the flexing under torque in a racecar moves the engine, which the
transaxle is obviously attached to, so the shift linkage would move
with the engine and transaxle.
Also, this would keep the shift rod level between the shifter and the
transaxle, rather than dipping down to the frame, and then back upwards
to the transaxle.
Make sense?
Dan
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References
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