SAAC Forum

The Cars => 1968 Shelby GT350/500/500KR => Topic started by: wkvasnicka on August 24, 2026, 02:16:45 PM

Title: Correct reproduction crankshaft
Post by: wkvasnicka on August 24, 2026, 02:16:45 PM
Are new correct crankshafts available for a 1968 Shelby GT500KR 428CJ? Thanks
Title: Re: Correct reproduction crankshaft
Post by: pbf777 on August 24, 2026, 04:41:04 PM
    I guess I'm not sure what one might deem as a "correct" 428 crankshaft, but there are a number of suppliers making available "428" (3.98" stroke) FE "replacement" crankshafts.  These are mostly the import "cast-steel" (vs. iron) examples, in and around the $600.00 price.  :)

    But, if you might be one of those whom think you need to spend hundreds of dollars for an oil pump, just because in comes to you in an old "FORD" box, then these cranks might not be for you.  ::)

    Scott.
Title: Re: Correct reproduction crankshaft
Post by: 98SVT - was 06GT on August 24, 2026, 04:54:22 PM
"correct"??? We haven't gotten to pulling the pan to judge if the crank is correct - yet. So use any 428 crank you like and break out your stamps - https://www.428cobrajet.org/id-crank

The original 1968 Shelby GT500 crankshaft is a cast nodular iron, 3.98-inch stroke part carrying the classic "1U" (or later "1UB" for Cobra Jet applications) identification stamping on the counterweight
Title: Re: Correct reproduction crankshaft
Post by: wkvasnicka on August 25, 2026, 09:27:29 AM
Thank you for the very helpful information.  However I am unable to find a supplier for a 3.98 stroke. A lead would be appreciated.  Thanks, Wayne
Title: Re: Correct reproduction crankshaft
Post by: SIIIRHD88 on August 25, 2026, 10:10:13 AM
https://www.jegs.com/i/Scat/942/942810/10002/-1?gad_source=1&gad_campaignid=23873307066&gbraid=0AAAAAD6OBRFSHXlbXEChnvc4m-Crlk1tr&gclid=CjwKCAjw-rTUBhAiEiwADv8gBPMsQfxf98bIN-IWiw3lKIfwzZ_grD38e2XxAxpKviRlUsEaqsUHlxoCWo4QAvD_BwE
Title: Re: Correct reproduction crankshaft
Post by: wkvasnicka on August 25, 2026, 01:24:19 PM
Thanks for the speedy info on JEGS, much appreciated.
Title: Re: Correct reproduction crankshaft
Post by: roddster on August 25, 2026, 08:32:25 PM
Check with Scat crankshaft also.