Combination Kit of Competition Style Motor Mounts for 73-87 GM with Big Block High Clearance Engine Crossmember

Combination kit of competition style motor mounts and big block style engine crossmember for '73-87 K10/K20 pickup, '73-91 Blazer/Suburban and '76-91 K30/V30 pickup

Includes motor mounts for GM Gen I/II small blocks and all GM big blocks. Will fit Gen III/IV GM V8 engines with the addition of part number GU32002.

Includes engine crossmember for GM big block engines, also fits Gen III/IV GM V8 w/truck oil pan or Gen I/II GM V8 with aftermarket oil pan. The big block version has 3/4" more oil pan clearance than the small block version.

When installing make sure the the center to center bolt spacing that is 26.75" should be facing towards the radiator. In other words the cross member taper should be narrower towards the front of the vehicle. 

Our Engine crossmember does work with the 8.1 vortec 

Our engine crossmember does not clear Cummins oil pans

Our Engine crossmember does not work with Duramax motors

Our Engine crossmember does not work with Gen V LT motors 

On "LS" Applications the small block crossmember can be used to get more up-travel if you are using an aftermarket oil pan like the Tilden Motorsports one.

People have asked what it takes to put one of these crossmembers in a 67-72 GM truck/SUV. By using the wedge shape "saddles" that the motor mounts bolt to on a 73-87(91) GM truck/SUV you can use our crossmember in the earlier frame. It does take some drilling/fitting to put them in. 

Here are some pictures of our crossmember in the earlier frame:

To help with deciding if the big block crossmember will work with your oil pan here are some measurements to check:

Big block crossmembers are 2-1/4” at front, 3” at back, from bottom of frame to top of tube.

For LS swaps using the Dirty Dingo “Slider” motor mounts there may be possible oil pan clearance issues with the stock truck style oil pan. A high clearance pan may be necessary.