Hot Rod Forum : Hotrodders Bulletin Board

Hot Rod Forum : Hotrodders Bulletin Board (
-   Engine (
-   -   What crank keys do I use for SBC crank? (

eric32 02-08-2009 05:04 PM

What crank keys do I use for SBC crank?
Hello guys I just bought a brand new scat cast steel crank 3.480 crank for a 1 piece rear main seal 350 small block. I bought a set of woodruff keys at advance auto today and I know I need two of them by looking at my crank. I am guessing looking at the crank slots it would take the bigger ones but know the exact size ones to use. It came with the following ones 3/32 by 1/2 inch,1/8 by 1/2 inch, 5/32 by 5/8 inch, 1/8 by 3/4 of an inch, and the last one3/16 by 3/4 of an inch. Also how do I install them cause I have never done one before. Do I just tap them in with a rubber mallet very gently or do they just kind of sit in there a little snug but not too tight?


GMC boogie 02-08-2009 07:11 PM

I don't know the exact size. I use a hammer and brass punch to drive them in. Thay should not just fall in place.

406 bug 02-08-2009 07:36 PM

As boogie states they need to be tight. After you install them in the crank, make sure you measure the height of the key in relation to key way depth of the balancer. I found the key way on my scat crank was not machined to the proper depth so it was necessary to mill a bit off the top of the keys. This can be accomplished with the keys in place.

All times are GMT -6. The time now is 03:30 PM.

Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0 PL2
vBulletin Security provided by vBSecurity v2.2.2 (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999 - 2012. All Rights Reserved.