Twin cam engine numbers decode
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5th Gear
Joined: Mar 2012
Posts: 9
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From: saskatchewan
Twin cam engine numbers decode
Hi, I'm thinking of buying a modified twin cam engine but don't know anything about it. Can someone please decode the engine numbers? 07707C0886
Thanks
Thanks
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,178
Likes: 11,277
From: San Diego, CA
What year is it supposed to be?
Is it a Harley bottom end, with Harley cases....?
All my Twin Cams ('01, '03, '12, '16) had engine numbers that started with a symbol like an asterisk, followed by 3 letters & a number, or 4 letters, followed by 6 numbers that match the last 6 of the VIN. It ends with another asterisk symbol.
Last edited by hattitude; Jul 21, 2022 at 09:35 PM.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,178
Likes: 11,277
From: San Diego, CA
If it's a Harley Twin Cam, the EIN will be on the primary side of the engine, just below the two cylinders....
FYI... I checked the S&S engine serial number look up, it does not come back as an S&S engine either.....
foxtrapper has a good idea, post a pic ......
Last edited by hattitude; Jul 22, 2022 at 08:15 AM.
Seasoned HDF Member
Joined: Sep 2008
Posts: 14,178
Likes: 11,277
From: San Diego, CA
KB - is the model code, that engine is from an FLHX (Street Glide)
4 - is the engine displacement code, that engine came from the factory as 1584cc (96")
7 - is the model year code, that engine is a 2007
687926 - are last six digits of the Street Glide VIN that engine was installed in at the factory.
So prior to any mods, that engine was a 2007 96" from an FLHX Street Glide. That makes it a Twin Cam "A" engine... It will fit into any compatible year Touring bike, but cannot be used in a Softail bike...
Hope that helps...
Last edited by hattitude; Jul 22, 2022 at 03:12 PM.
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Seasoned HDF Member
Joined: Nov 2010
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From: Oxford, Nc
If it's a "modified" TC that really is from 2007, you'd better check what they (hopefully) did to strengthen that notoriously weak crankshaft set up from that model year.
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Stage I
Joined: Oct 2023
Posts: 1
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From: FL
Fvw6673429
This is my engine number but all the decoder bs I've been reading hasn't been helpful can anyone tell me what I have I know it's a twincam motor from what I've been told and the research I've done I believe it's an 06 fuel injected 88ci but out of what idk