“Uni-Cross” Universal Transmission Crossmember

Installation Guide Applications:

Fits 1965-1970 Mustang

READ THIS MANUAL IN ITS ENTIRETY PRIOR TO BEGINNING INSTALLATION

Ford Performance Specialist 1001 Reno Avenue Suite 2F

Modesto, CA. 95351 www.RonMorrisPerformance.com

Phone (209)605-1590 Fax (209)569-0558

Warranty information: There is NO WARRANTY, expressed or implied on this product. Neither the manufacturer nor the seller will be liable for any loss, damage or injury, direct or indirect, arising from the use or inability to determine the appropriate use of this product. Before attempting to install, all pictures and/or instruction sheets should be completely reviewed to determine the suitability of the prod-uct for its intended use. The user assumes all risk and responsibility. We (RMP) reserve the right to change specifications without notice. ALL PRODUCTS ARE INTENDED FOR RACING AND OFF-ROAD USE AND MAY NOT BE LEGALLY USED ON THE HIGHWAY. The products offered for sale are considered race car components and may require some fabrication skill. NO PRODUCT IS DESIGNED OR INTENDED TO PREVENT INJURY OR DEATH.

Read Completely Before Starting Installation Read entire installation manual before starting installation. You need to familiarize yourself with the complete installation before starting. This manual is designed to make the installation of our products easy and trouble free. Make sure that your vehicle is securely supported on a hoist or jack stands before starting any work. Before starting any work on your vehicle, be sure to disconnect the battery. Experience working with cars is required. If you are not completely sure of any of these installation procedures, consult a qualified mechanic. This crossmember can be used with T5, Tremec 3550, TKO, 500, 600 and T56 6 Speed transmissions. May work with other transmissions. RMP Adjustable Lowered Motor Mounts are helpful when installing a T-56, 6 speed transmission into an Early Mustang. Depending on the model and year of your vehicle, this crossmember may require modifications to your rear brake line and parking brake cables. Special tools required Torque wrench Drill motor 1/8” drill bit 3/8” drill bit 5/8” drill bit

If you are planning on using the “Uni-Cross” crossmember to install a T-56, 6 speed transmission into your Early Mustang, you will need to trim the floor support crossmem-ber that goes above the trans as shown in the picture to the right. I would recommend removing more from the sides than we did. Our transmission is a little tight on the sides near this floor support crossmember, and the extra clearance would be helpful.

At this point you should have your engine or an engine block secured in the car by its motor mounts. Then bolt the transmission to the engine. If you are using adjustable motor mounts, make any and all adjustments to the engine/transmission before going any further. Be sure that the engine/transmission are not contacting the body anywhere along the floor or transmission tunnel. First you will want to start by installing the trans-mission mount onto the transmission.

Install the crossmember onto the transmission mount. Leave slightly loose so that adjustments to the cross-member can be made.

Install the frame brackets on both ends of the crossmem-ber. Leave bolts a little loose so you can make adjust-ments to frame brackets.

Using a sharp object, like a pick, mark the frame bracket holes onto the inside of the frame rail. After you have marked the holes, remove crossmember and frame brackets.

Slide the frame brackets up against the inside of the frame rail. Make sure that base of frame bracket sits flat on frame rail.

Once you have your transmission and frame brackets in the desired location, clamp frame brackets in place so that they will not shift or move.

Before you center punch the frame rails for drilling, you will need to make sure that your centers are 1 3/8” apart. Once you have verified that your centers are 1 3/8” apart go ahead and center punch the frame rails and start drill-ing.

Drill 1/8” pilot holes, then drill holes out to 1/4”

Finally drill holes to 3/8”. Do not go any larger than 3/8”

Then you will be drilling thru the outside of the frame rail. It is very important to get these holes drilled straight across from the holes on the inside of the frame rails. We used a carpenters square and an extra long 3/8” drill bit to make sure our holes were straight.

Once you have drilled the 3/8” holes thru the outside of the frame rail, drill the holes on the outside of the frame rails up to 5/8”. Drill only the outside of the frame rails.

Slide the frame reinforcement tubes into the holes on the outside of the frame rail. It may be necessary to ream these holes out a little to get the frame reinforcement tubes to fit. As you can see in the photo, the tubes on the frame rein-forcement tubes are too long. Each tube length needs to be trimmed to the proper length. Do NOT use 1 measure-ment for all tubes. Mark the frame reinforcement tubes, 1 for drivers side and 1 for passengers side. Also mark the front of the frame reinforcement tubes.

Using a dial caliper, we measured the depth of each hole.

Then we transferred the dimension to the appropriate tube.

If you do not have a dial caliper available to you to make these measurements, you can accomplish the same thing by using a screw driver to make the measurement.

Then transfer the distance to the appropriate tube.

Once you have transferred the measurement to the appropriate tube, cut the tube 1/16” to 1/10” shorter than your mark. This will give a slight compression on the frame rail ensuring a secure connection. Don't be sur-prised if every tube will be a different length after cutting them.

We used our wire wheel to smooth out the rough edges. Be sure to wear your eye protection!

After the ends of the tubes are cut to the correct length and deburred, side them back into the appropriate frame rail. Then install the bolts thru the frame tubes.

Install the frame brackets over the bolts

Install the flat washers and nylock nuts. Do NOT tighten! Leave these a little loose so that you can adjust the frame brackets if needed. Repeat 3 previous steps on other side of car.

Reinstall crossmember onto transmission mount. Do not tighten nut.

Install crossmember to frame bracket bolts, washers and nuts. Torque to 40 ft. lbs.

Torque frame bolts to 40 Ft. lbs.

Finish up by tightening the transmission mount to cross-member nut.

You have completed the crossmember installation. This is what the finished product should look like.