Owners manual
DAPT
DAPTDAPTDAPT
PERFORMANCE PRODUCTS
SWAP MOUNT KIT
4546-4566-Instructionsheet-070706.cdr
INSTALLATION INSTRUCTIONS
12438 Putnam Street Whittier, CA 90602 tel (562) 921-0404 fax (562) 921-7515
website: www.tdperformance.com email: techsupport@tdperformance.com
INSTRUCTION SHEET
PART # 4546 & 4566 Small Block
Chevy V8 to Jeep YJ Wrangler
1 - Trans-Dapt Crossmember
2 - Heavy Duty Motor mounts
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6 - 5/16” flat washers
6 - 3/8” lock washers
6 - 3/8-16 X 1” grade 8 bolts
2 - 7/16”-14 nylon lock nuts
2 - 7/16” lock washers
4 - 7/16” flat washers
2 - 7/16”-14X3½”bolts
2 - 7/16”-14 X 4” bolts
2 - 1/2”-13 nuts
4 - 1/2” lock washers
4 - 1/2”-13 X 1” grade 8 bolts
2 - 9/16”-12 nylon lock nuts
2 - 9/16” flat washers
2 - 9/16”-12X1½”grade 5 bolts
2 - 5/8”-11X3½”grade 5 bolts
2 - 5/8” lock washers
2 - 5/8” mount spacers
Only in kit #4566
THIS KIT CONTAINS
Installation Procedures:
Installation Tips:
This Crossmember engine swap kit has been designed to be used with 1987-1996 Jeep YJ Wranglers using a
stock GM or a oil pan. If you are planning on using an after market oil pan the front
depth should not exceed 3 5/8”.
The stock motor mounts must be completely removed from the frame before the Trans Dapt Crossmember can
be installed. It is also recommended to remove the front shocks for ease of installation. Modifications to the
skid plate (re-drilling) is required for all applications.
We have engineered this Crossmember mount to position the engine in the best possible location for
serviceability. Driveshaft modification may be required for some applications. We have included 2 5/8” spacers
to allow lateral adjustment. By using these spacers you can adjust the motor mount pads 5/8” to the front or
rear of the Crossmember. This will allow you 1 ¼” of overall adjustment from front to rear. The 7/16 flat
washers must be used on both sides of the bolt that slides through the mount pad. We have also a longer set
of 7/16” bolts for use with the spacers.
Mount the Crossmember using the factory motor mount holes on the shock towers. Install the Crossmember so
the mount perches are aiming to the rear of the vehicle. The lower bolt comes through the outside of the shock
tower and threads directly into the threaded end of the Crossmember. The upper bolt and washer is to be
installed from the inside out with a nut and washer inside the shock tower. We highly recommend the use of
thread locker on all nuts and bolts.
Use Trans Dapt Engine Tilter 9099 for a trouble free installation. Be sure to check out the Newest Trans Dapt
catalog for the largest selection of EFI /Carb. Spacers and adapters available. You can order a catalog by
sending a check or money order for $4.00 to the address above.
Trans Dapt Slamguard
NOTE: This kit will not work with LT1, LS1 or 383 stroker.
Small Block Chevy in to a 1987-1996 Jeep YJ WranglerPart Number 4566 Includes
mount pads. Part number 4546 Include mount pads.Does Not
Important! Read all instructions before you begin installation.