These instructions are for the use of both the Bellhousing adapter plate (Part number 1033039) and the Torque Converter adapter ring (Part number 1052027). Both of these parts are included in the kit, part number 1033040.
This kit is designed to mate a 4.0 Toyota V6 (1GR) to any GM automatic transmission. This kit requires the use of a stock 4.0 flexplate and a GM torque converter.
Includes:
Bellhousing Adapter Plate
Torque Converter Adapter Ring
(2) M10x1.25 x 45mm Flange Head Bolt
(4) M12x1.25 x 30mm Bolt
(4) M10x1.25 x 30 Flange Bolt
(6) 3/8-16 x 1-1/4 ” Bolt
(4) M12 Flat Washer
(6) 3/8” Lock Washer
(3) 3/8-16 x ¾” Flat Socket Head Allen Bolt
(3) M10x1.25 x 16 10.9 Flange Bolt
1. Modify your transmission bellhousing to clear the adapter plate bolts as shown in the following image. Use the adapter plate and 12mm bolts as a template to assure adequate clearance before installing the transmission to the engine. This may take a few tries before proper clearance is obtained. Note location of arrows for where to remove material.
2. Using a hole saw, drill a 1- ½“ hole in the bellhousing as shown for access to the top starter bolt. Grind or file as necessary for proper access for a 14mm deep socket. Use the starter as a template for proper hole location. Failure to follow this step will result in needing to remove the transmission to access the top starter bolt! If you plan on removing the starter without removing the transmission, this step is crucial!
3. Clearance the bottom of the engine block as shown for torque converter bolt access. The more clearance, the easier it will be to install and tighten the torque converter bolts.
4. Install the adapter plate to the engine block using the hardware provided. 4 M12x1.25 x 30mm bolts with flat washers and 4 M10x1.25 x 30mm flange head bolts. Use threadlocking compound on the threads and tighten.
5. Install the stock flexplate to the engine using the stock bolts and spacers. Use threadlocking compound on the threads and torque to the factory spec.
6. Install the torque converter adapter ring to the converter using the 3 allen-head bolts provided. Use threadlocking compound on the threads and tighten. Use the 3 outer diameter holes for the converter.
7. Install the converter into your prepared transmission. Lube the front seal and make sure the converter registers completely on the input shaft. Do not force the converter onto the shaft! Make sure the converter is fully seated on the shaft! Failure to properly install the converter will result in front pump damage!
8. Install the trans to the engine using the (6) 3/8-16 x 1-¼“ bolts and lock washers provided. The trans should slide into place without much force. Tighten bolts.
9. Bolt the converter to the flex plate using the (3) M10x1.25 x 16mm flange head bolts provided. Use threadlocking compound on the threads and tighten. You will need to rotate the crankshaft to access these 3 bolts and line them up correctly.
10. Install the starter using the M10x1.25 x 45mm flange bolts provided. This is where you will use the access hole you drilled in the bellhousing earlier. Tighten bolts.
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