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Technical Bulletin: Subframe Modification for Engine Swaps--All ST & TT 5-20-22


Greg G.

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Technical Bulletin 5-20-22:  Subframe Modification for Engine Swaps--All ST & TT

ST1-4 Rules:  6.2.1.1e
ST5-6 Rules: 6.1.3.1d

Notching of the OEM sub-frame/cross-member for the specific purpose of engine swap fitment only is permitted.

 

Revised Rule ST1-4:

1e) Modifications of non-subframe/non-suspension cross-members (other than the rear frame
cross beam), transmission mounts, differential mounts, engine mounts, and radiator core supports are permitted. Notching of the OEM sub-frame/cross-member for the specific purpose of engine swap fitment only is permitted.

 

Revised Rule ST5-6:

1d) Modifications of non-subframe/non-suspension cross-members (other than the rear frame
cross beam), transmission mounts, differential mounts, engine mounts, and radiator core supports are permitted. Notching of the OEM sub-frame/cross-member for the specific purpose of engine swap fitment only is permitted.

Edited by Greg G.
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