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TRANSMISSION BODY MODIFICATIONS
Purpose: Improvement of fitment to car tunnel, improved
driveline angle, reduction of shift rail flex
Description:
In 2003, Keisler changed the design to make the shifter
remote mounted to the transmission. The
older design with shifter mounted on L-shaped top plate was eliminated. Also included was a template and floor
sheetmetal hump modifier, allowing the transmission to be raised to achieve
original driveline angle. Due to the
major casting changes when Tremec introduced the TKO 500/600, upgrading to the
newer design is costly.
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New style transmission with remote mounted shifter (removed): |
SHIFTER MECHANISM
Purpose: Improvement of Shift Quality; Reduction of Handle
Vibration; Reduction of Transmitted Noise into Cabin;
Description:
In 2004, Keisler changed the shifter mechanism to the red
tower type, incorporating biasing compression springs, lower weather seal,
improved internal pivot yoke. A
recommended upgrade over the previous cast aluminum tower.
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Previous style shift tower on left, new style on right: |
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Purpose: Ease of installation; Improvement of Shift Quality;
Reduction of Transmitted Noise into Cabin
Description:
In 2006, Keisler changed the shifter linkage to the quick
release PerfectShift3 design, incorporating a graphite nylon impregnated
constant pressure bushing, quick release 2 bolt main cap, and spring preloaded
pivots. A recommended upgrade.
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New style tower with PerfectShift III link:
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HYDRAULIC CLUTCH KIT
Purpose: Elimination of chronic leak
Description:
In 2004, Keisler completely revised the hydraulic clutch kit
to eliminate the chronically leaking McLeod / B&M concentric slave
bearing. The McLeod unit suffered from
inadequate piston and fluid line seals, lack of preload spring, lack of dust
boot and wiper seals, among other problems.
The problems resulted in frequent failures requiring removing of the
transmission to service the bearing.
Additionally, bleeding the McLeod / B&M unit was problematic.
The new Keisler Hydraulic Clutch kit features a proprietary
OE design hydraulic bearing rated for 1 million cycles, single line supply with
integrated bleeder, forged aluminum housing, piston blow-out prevention among
many other features. A recommended upgrade.
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Previous style hydraulic bearing retainer and spacer:
New style hydraulic bearing retainer and spacing shim:
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Purpose: Improvement of hydraulic master cylinder
Description:
In 2005, Keisler redesigned the master cylinder portion of
the hydraulic clutch kit, and utilized a high quality Wilwood master cylinder
with Keisler proprietary firewall mounting kit.
Lineset was also revised to include integrated bleeder. A recommended upgrade.
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New Wilwood master cylinder and mount block on left, previous style on right: |
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CROSSMEMBER
Purpose: Improvement of driveline angle, ease of
installation
Description:
In 2004, Keisler changed the crossmember design so that it
will work with all model E-body 1970-74.
Additionally, the shim spacers are utilized in various thickness to
achieve correct driveline angle.
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Current crossmember design:
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