Find the Right Crossmember for Your Project.

A Next Gen Crossmember Maintains Strength.

Why Swap and What Is a Transmission Crossmember?.

If you choose to use the stock size 3/8″ hardware, it is strongly recommended to use new Grade #8 fasteners to compensate.ĭiscover more about the G Force Crossmember product line on these pages. To use the provided 7/16″ hardware it is necessary to enlarge holes in your frame rails with a 1/2″ drill. This crossmember is installed so that the exhaust clearance humps are closed on the top and open on the bottom.

However, another determining feature is the crossmember center tube which has a 1/2″ drain slot that is positioned on the bottom and on the passenger side next to the hump weldment. This crossmember is installed with the G Force label facing the rear of the vehicle. Some customers have reported that with instances where there is slight interference they have been able to gSee the G Force Crossmember Overview for more info. If the floor pan is too close to allow installation, it may be necessary to replace the body bushings. This generation of vehicle is prone to body bushing compression, even with some southern vehicles. On some installations, it is necessary to remove the catalytic converter heat shield from the passenger side floor pan. I know it sounds dumb to ask and I wouldn't if I didn't have to but I have been searching everywhere for pics and can't find any and everything I read says, 'remove cross member or install cross member' and no explanation or pics.See the G Force Crossmember Overview for more info.įor all 78-88 G-Body transmission crossmembers the passenger side hump is the taller of the two. For example, do you use nuts and bolts to do it? Nuts on top?

Which side do the oval holes need to be? Passenger or drivers?Īlso, how does this thing bolt up to the sub-frame? I assume it is laid on top and then bolted on but I am trying to figure out how it is done.

Looking at the crossmember it has round holes on one side and oval on the other. I have the motor on the mounts and loosely tightened but I need to figure this out. I am trying to figure out how the heck that goes back in. I do have two washers and bolts for the center mount but I am talking about the crossmember to frame bolt up.

I went back to my baggies and found I only have three bolts and for some reason 5 nuts in the bag for the crossmember mount. It has been a few years since I took out the transmission and motor.

How to install transmission crossmember