Rules - Motor Swap Big Cars

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 ANY YEAR FULL SIZE AMERICAN MADE SEDAN, COUPE, OR STATION WAGON.   Drivetrain  

◦ Any motor of your choice.  

◦ You can have a lower cradle with no pulley protector. It can only attach at the factory, unmoved mounting points only

◦ No steel bellhousings or tail shafts.  

◦ Transmission, you have 2 options. Pick one only.  

- 1. Factory bellhousings only with a top skeleton brace that does not wrap underneath the pan or touch the tail shaft.                     Or

- 2. You can run an ultra bell on the transmission with no trans brace at all.  

◦ Must use factory OEM style engine mounts. Aftermarket ones are ok as long as they have the rubber inside them.  

◦ No welding engines in solid  

◦ Can use a piece of 2x2 square tubing for a transmission crossmember.  

◦ Any 5 lug rear of choice  

◦ Simple back brace is allowed. Back brace CANNOT touch the humps or frame at anytime.  

◦ Pinion brakes allowed

◦ Sliders are permitted  

◦ Must use factory trailing arms. And they cannot be plated or reinforced  

◦ 10 gallon fuel cell max

◦ Oil coolers and trans coolers allowed but cannot be used to strengthen the car in any way   Suspension  

◦ You can do a simple an arm/spindle swap.  

◦ No rack protectors on 03+

◦ No aftermarket tie rods. You can weld the sleeves. No added metal  

◦ Leaf packs must be 100% stock for that make and model of vehicle.  

◦ No adding leafs or flat stacking  

◦ You can have a total of 4 leaf clamps per leaf pack. They can be 1/4” thick and 2” wide max.  

◦ Leaf springs must mount on factory location on both the front and rear of the springs  

◦ All rear suspension must be in factory operational form.  

◦ No welding leaf hangers  

◦ Coil sprung cars can wire or chain in the coil springs  

◦ Must use factory shocks in rear. No allthread shocks  

◦ You can chain the rear down to achieve ride height.  

◦ Aftermarket rear trailing arms are allowed. You can also plate the rear trailing arms. Must move freely.    Frame  

◦ No pitching, tilting or cold bending allowed

◦ No pinning, capping or extra steel on or in the frames  

◦ 22” long 1/4” thick hump plates allowed FOR METRIC GM CARS 78 AND NEWER ONLY!!   

◦ There is to be no welding on the frame other than bumpers, crossmember and engine mounts  

◦ No frame shortening period   

Body  

◦ All body bolts can be swapped out with 1/2” bolts max.   Bolts cannot go all the way through the bottom of the frame.   Max washer 3” on top and bottom of the bolts

◦ Must use factory rubber body bushings

◦ Body cannot sit straight on the frame.  

◦ Front 2 core support mounts can up to 1” allthread and can be used as the front 2 hood bolts.  

◦ You can use up to a 5” core support spacer for these 2 mounts only.  

◦ You can cut the firewall for distributor clearance  

◦ All doors can be welded 5” on 5” off

◦ Drivers door can be welded solid or have a door skin. Door skin can only go 1” past the door seams.  

◦ Trunk lids can be wired or chained in 8 spots or removed. No welding on the trunk lids.  

◦ Trunk lids can be canoed/dipped 6” measuring from the height of the quarters. Will be measured with a straight edge laying on top the quarters to the lowest part of the trunk lid.  

◦ Speaker deck can be pushed down but not welded  

◦ Hoods can have the 2 allthread in the front and 4 more pieces of wire or chain to hold it closed. You can weld 4” pieces of angle on the hood and top of the fender and drill a hole in it to wire them together if you’d like.  

◦ Quarters can be creased but must stay in upright position.  

◦ You cannot squeeze quarters over top the frame rails  

◦ You may run aftermarket pedals, shifters and steering columns   

Cage  

◦ Can have a 4 point floating cage with gas tank holder. All components of cage must be 6” minimum off the highest part of the floor and 4” away from firewall.  

◦ You can have a rollover bar that must be straight up and over the roof and welds to the top of the back bar.  

◦ Rear window bar can attach 6” on the roof and within the first 6” of the drip rail of the speaker deck and trunk lid. This bar can be no bigger than 2x2.  

◦ Windshield must have 2 straps on the windshield.  

◦ Tank holder must stay 6” away from package tray

◦ DO NOT MOVE PACKAGE TRAY. It must stay in factory location

◦ No downlegs

◦ Cage CANNOT be inside the doors.  

◦ Side bars no further forward than the firewall and must be flush with the back bar.  

◦ Back bar can be no further back than 6” behind the door seams or B pillar

◦ Cage can be gusseted 6” out of each corner.   

Bumpers  

◦ Any bumper of choice except Chrysler pointys.  

◦ Replica, homemade, loaded and seam welded all are ok

◦ Homemade bumper with points need to be 4” off the front and span over 32”. Nothing excessive  

◦ Bumpers can be not higher than 22” from the bottom to the ground and no lower than 14” from the bottom of the bumper to the ground. This is for fronts and rears

◦ Bumper mounting options are 

- 1.) hardnosed straight to the frame with a 6x6 mounting plate on the open end of the frame.  

- 2.) No hardnosing, utilize the factory shock for the vehicle. You may collapse and weld the shock. You may weld the shock to the factory bracket and weld the bracket to the frame with 6- 3” long welds.   

Tires  

◦ Any wheel and tires setup of choice  

◦ No bead locks    Fix it plates  

◦ All fresh cars get 4-4x4x1/4” fix it plates. All preran get 6.  

◦ Once they are on, they cannot be removed.

◦ Must be a 1”’gap in between plates