Dear Asa, It does not need machining. It is a direct replacement. I am in the middle of a 351C rebuild and I hesitate in gain some confirmation from any actual users. It looks more robust than the typical two-piece RMS. Thanks. Warmest regards, Chuck Engles From: Asa Jay Laughton [mailto:asajay@asajay.com] Sent: Monday, July 14, 2025 9:55 AM To: Charles Engles Cc: detomaso@server.detomasolist.com Subject: Re: [DeTomaso] Techno question: TMeyer one-piece rear main seal No experience with that one but I have heard one piece seals have been working well for Cleveland engines when the block is machined. -THIS- seal however does not need machining. It uses the same seal groove as the original. I like that idea better than machining the rear of the block. I would use that seal if I were in the middle of a 351C build without hesitation Asa Jay MSgT, USAFR, Retired “Within the covers of the Bible are the answers for all the problems men face.” Ronald Reagan On Jul 14, 2025, at 07:24, Charles Engles <cengles@cox.net> wrote: Dear Forum, TMeyer offers a one-piece rear main seal. He is very reputable and it looks good. Endorsed (?) by Kaase, too. [1]https://www.tmeyerinc.com/product/1-piece-rear-main-seal-2/ Does anyone have actual experience with it? Any second hand reports? Warmest regards, Chuck Engles References 1. https://www.tmeyerinc.com/product/1-piece-rear-main-seal-2/ _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@serverdetomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages. Dear Asa, It does not need machining. It is a direct replacement. I am in the middle of a 351C rebuild and I hesitate in gain some confirmation from any actual users. It looks more robust than the typical two-piece RMS. Thanks. Warmest regards, Chuck Engles From: Asa Jay Laughton [mailto:asajay@asajay.com] Sent: Monday, July 14, 2025 9:55 AM To: Charles Engles Cc: detomaso@server.detomasolist.com Subject: Re: [DeTomaso] Techno question: TMeyer one-piece rear main seal No experience with that one but I have heard one piece seals have been working well for Cleveland engines when the block is machined. -THIS- seal however does not need machining. It uses the same seal groove as the original. I like that idea better than machining the rear of the block. I would use that seal if I were in the middle of a 351C build without hesitation Asa Jay MSgT, USAFR, Retired “Within the covers of the Bible are the answers for all the problems men face.” Ronald Reagan On Jul 14, 2025, at 07:24, Charles Engles <cengles@cox.net> wrote: Dear Forum, TMeyer offers a one-piece rear main seal. He is very reputable and it looks good. Endorsed (?) by Kaase, too. [1]https://www.tmeyerinc.com/product/1-piece-rear-main-seal-2/ Does anyone have actual experience with it? Any second hand reports? Warmest regards, Chuck Engles References 1. https://www.tmeyerinc.com/product/1-piece-rear-main-seal-2/ _______________________________________________ Detomaso Email List is not managed by POCA Posted emails must not exceed 1.5 Megabytes DeTomaso mailing list -- detomaso@server.detomasolist.com To unsubscribe send an email to detomaso-leave@serverdetomasolist.com To manage your subscription (change email address, unsubscribe, etc.) use the links above. Members who post to this list grant license to the list to forward any message posted here to all past, current, or future members of the list. They also grant the list owner permission to maintain an archive or approve the archiving of list messages.