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490 starting crank dimensions #488692 01/13/24 03:55 PM
Joined: Jun 2023 Posts: 6 Kentucky Dans26 OP Grease Monkey
OP Dans26 Grease Monkey Joined: Jun 2023 Posts: 6 Kentucky	Can someone please provide me with the dimensions of the 490 starting crank so that I can identify one or maybe create a copy? Thanks

Filling Station - Chevrolet & GMC Reproduction Parts

Re: 490 starting crank dimensions Dans26 #488934 01/20/24 12:12 PM
Joined: Oct 2003 Posts: 814 Likes: 1 Waterbury ,Ct. SSG26K ChatMaster - 750
SSG26K ChatMaster - 750 Joined: Oct 2003 Posts: 814 Likes: 1 Waterbury ,Ct.	There are many different part numbers over the years but the cranks are basically the same. Start with 3/4" stock about 2' long. Drill a 5/16" hole centered 5/16" from the end. This will leave you .160" from the tip to the edge of the drilled hole. Insert and center a 5/16" X 1.5" pin. I've attached 3 photos so you can see where to make your bends. I hope this helps. Attached Images Last edited by SSG26K; 01/20/24 09:12 PM. Steve '25 Superior "K", '79 Corvette , '72 Corvette LT-1 & 1965 Corvette Coupe

Re: 490 starting crank dimensions Dans26 #489054 01/23/24 09:14 PM
Joined: Nov 2022 Posts: 14 Ottawa Ontario Canada andsome07 Grease Monkey
andsome07 Grease Monkey Joined: Nov 2022 Posts: 14 Ottawa Ontario Canada	Actually they are different. Its easy to make one, but if you want the original, this is what it looks like. Attached Images

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