LT4 crankshaft ?
Thread Starter
Drifting
Joined: Oct 2003
Posts: 1,405
Likes: 4
From: Lorena Texas
LT4 crankshaft ?
Does anyone know if a stock LT4 crankshaft has a key slot milled in to it? I know the hub is not keyed but have heard the crank does have a slot machined in to it. Looking at installing an ATI super damper. Any help would be apreciated.
Melting Slicks
Joined: Oct 2006
Posts: 2,238
Likes: 10
From: College Station TX
Yes, it does have a keyway, and there is a key installed. The key is weird, though, as it sits flush with the crank except for at the very back, where it sticks up for the tone ring for the crank position sensor (OBDII only).
Thread Starter
Drifting
Joined: Oct 2003
Posts: 1,405
Likes: 4
From: Lorena Texas
Le Mans Master
Joined: Jul 1999
Posts: 8,683
Likes: 6
From: Phoenix AZ
The crank has two key-ways cut into it, one for the timing gear and crank position sensor, and one for the crank hub. There is a key installed for the timing gear and CPS, but there is no provision for a key machined into the stock crank hub.
Thread Starter
Drifting
Joined: Oct 2003
Posts: 1,405
Likes: 4
From: Lorena Texas
My plan is to install an ATI underdrive balancer and they are keyed. Just did not want to pull the crank to have machined.
Intermediate
Joined: Jul 2004
Posts: 38
Likes: 0
Thread Starter
Drifting
Joined: Oct 2003
Posts: 1,405
Likes: 4
From: Lorena Texas
Intermediate
Joined: Jul 2004
Posts: 38
Likes: 0
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
10 Most Common Corvette Problems of the Last 20 Years!
Joe Kucinski
5 MOST and 5 LEAST Popular Corvette Model Years in History!
Joe Kucinski
2027 Corvette Buyer's Guide: Everything You Need to Know!
Joe Kucinski
10 Things C8 Corvette Owners Hate (But Won't Tell You)
Joe Kucinski
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!
Brett Foote
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)
Joe Kucinski
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!
Michael S. Palmer
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!
Joe Kucinski
