Custom Built Transmissions
7525 Westbank Expressway
Marrero, LA 70072
(504) 347-5481 ~ (504) 347-5599 fax
http://cbtransmission.citymax.com ~ custombuilttrans@bellsouth.net
Allison Stage III Kit
2001-07
2006-07
Price: $2260.00
This kit is recommended for normal duty with up to 500 RWHP. Also comes with a Transgo Shift Kit®, Filter Kit and Allison Triple Disk Torque Converter.




Allison 5 Speed To 6 Speed
2001-05
Price: $1648.00*
CONVERT YOUR 2001-2005
ALLISON 5 SPEED TO 6 SPEEDS
Drops 325 engine rpm @ 75 mph with 3.73 gears. Increases fuel economy 1 - 1.5 MPG, reduces engine noise while cruising, a truck with 3.73 gears that normally likes cruising at 62 MPH will now cruise nice at 72 MPH. The gear ratio in your 5 speed is .71 and our 6th gear will be .61. 6th gear can be disabled with your two haul button and 5th canceled with OD off. Requires valve body and tcm change (1 hour). No wiring, no modifications required. Indicate LB7 or LLY & year.
Core deposit required
Sun Coast Engineered Valve Body, Solenoids. This kit includes smart clutch control valves for increased durability. The Sun Coast Engineered Valve Body is a certified-tested valve body assembly. No sticking valves here!
Recommended items are:
Allison Deep Filter Kit
2001-07
Part No. 37710-12L
Price: $47.00
Kit includes deep sump filter, spin-on filter and Allison Filter Loc™.
Allison Shallow Filter Kit
2001-07
Part No. 37711-12L
Price: $45.00
Kit includes shallow sump filter, spin-on filter and Allison Filter Loc™.
These filters must be used with the factory GM pan or PML cast pan.
Allison Transgo Shift Kit
2001-05
Price: $208.00
You're looking at a NEW Transgo Allison shift kit for the 2001-2005 Chevrolet & GMC HD trucks, diesel or gas. This heavy duty kit corrects the common problems with these transmissions; goes into neutral under load, 3-4 slip, burned C2 or C3 clutches, sticks in one gear, won't move after extended parking, loss of pump prime. This kit includes smart clutch control valves for increased durability and Short-Crisp-Smooth-upshifts and kickdowns. This kit also reduces trouble codes. This is the most complete shift correction kit available and definitely the most reputable.


Allison Billet Input Shaft
2001-07
Price: $637.50
Designed for higher horsepower/torque engines, this performance product has been tested in excess of 1,800 ft/lbs of torque. Shaft is machined from 9310 VACU-MELT material then Heat Treated for torsional strength and precision ground on all critical diameters.

Allison Billet Output Shaft
2001-07
Price: $637.50
Designed for higher horsepower/torque engines, this performance product has been tested in excess of 1,800 ft/lbs of torque. Shaft is machined from 9310 VACU-MELT material then Heat Treated for torsional strength and precision ground on all critical diameters.

Allison 1000 Stage VI Rebuild Kit
This kit when properly installed will enable the Allison to easily handle extreme power and load increases in excess of 500 RWHP
This kit include GM-1056-3D torque converter.
Price; 2,780,00 $


Allison Billet Extension Housing
01-07
Price: $1795.00
Due to the cantilever effect of the rear trans mount, the transmission rear adapter housing is prone to cracking. The slightest amount of rear drive shaft vibration can result in a very expensive transmission repair.
Sun Coast offers a billet replacement housing with unlimited configurations available for Allison transmission rear housing. You can now reuse, re-clock or replace your factory transfer case for better pinion angles or a different transfer case. This replacement housing will eliminate the problems associated with the OEM cast housing. Makes conversions possible to use Dodge or Ford transfer cases a snap.
Please specify transfer case model you are using and or different angle needed when ordering. Transmission should be removed to install this item. This is a direct replacement part.

Mag-Hytec Pan Black Finish
2001-07
Price: $275.00
Cast Aluminum pan increases fluid and cooling capacity, has magnetic drain plug, port for temp sender, and it looks good too.


• Deep high-capacity sump for maximum cooling
• Magnetic drain plug
• 303 hardware except allen head cap screws are zinc plated
• 1/8 NPT temperature sender port
• Finned aircraft aluminum construction
• Requires only three allen key wrenches (included) for installation and service
• O-rings require no gaskets or sealants*