LT1 hub not keyed??
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 30,845
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
LT1 hub not keyed??
I got the hub off today, that was FUN! :cuss
taking the puller off I may have moved the crank :mad
The hub isn't keyed to the crank. :rolleyes:
Also, the mark on the hub is a good 4 inches from the rib on the cover.
So what's the tollerance on getting it lined back up.
Where should the pin on the camshaft be?
On the later optis the camshaft is exposed when it's removed.
Thanks
taking the puller off I may have moved the crank :mad
The hub isn't keyed to the crank. :rolleyes:
Also, the mark on the hub is a good 4 inches from the rib on the cover.
So what's the tollerance on getting it lined back up.
Where should the pin on the camshaft be?
On the later optis the camshaft is exposed when it's removed.
Thanks
Drifting
Joined: Dec 2000
Posts: 1,255
Likes: 50
From: Clayton, NC north carolina
Re: LT1 hub not keyed?? (BrianCunningham)
Brian Put the #1 cylinder at TDC line up the timing marks on the timing gears. Look at the hub and note the point thats cast into the hub. this lines up with the timing mark on the crank gear. Now, unless you marked the balancer when you took it off. You may be SOL, still, you have 3 trys to get it correct. for 90 you can get a keyed hub thru Thunder racing the keyway is machined in the crank.
Melting Slicks
Joined: Mar 2002
Posts: 3,108
Likes: 126
From: S.L.C. UT
Re: LT1 hub not keyed?? (ASRoff)
The stock hub is the real achilles heal of the LT1. Why the factory never used a keyed hub when the crank is keyed is beyond me. I would step up to a keyed hub since you have it off. If you ever put a supercharger on it, it should be manditory.
Safety Car
Joined: Dec 2000
Posts: 3,767
Likes: 5
From: Jacksonville Fl
Re: LT1 hub not keyed?? (tpi 421 vette)
I can only think because the engine is internally balanced and the crank signal is taken from the crankshaft sensors...it does not even need an alignment mark or keyed hub.
Of course...I agree if you are to use a supercharger, you better put a key in it.
Of course...I agree if you are to use a supercharger, you better put a key in it.
Drifting
Joined: Dec 2000
Posts: 1,255
Likes: 50
From: Clayton, NC north carolina
Re: LT1 hub not keyed?? (ASRoff)
I forgot, their should be a triangle cast into the front of the balancer that will be the mark to line up with the hub. (sorry I have an aftermarket balancer on my car)
Thread Starter
Team Owner
Joined: Mar 2001
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From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Re: LT1 hub not keyed?? (ASRoff)
I found the triangles on the balancer, and the hub.
The hub, at least mine, has balance holes on one side.
So do the triangles line up with the crankshaft slot?
Then I don't have break the valvecover and timing cover gaskets.
thanks!
The hub, at least mine, has balance holes on one side.
So do the triangles line up with the crankshaft slot?
Then I don't have break the valvecover and timing cover gaskets.
thanks!
Thread Starter
Team Owner
Joined: Mar 2001
Posts: 30,845
Likes: 293
From: Boston, Dallas, Detroit, SoCal, back to Boston MA
Re: LT1 hub not keyed?? (BrianCunningham)
So do the triangles line up with the crankshaft slot?
That would be a NO, it's nowhere near there. :rolleyes:
[/answering own question]
I put it back on as near as I could get it.
Tried starting it, no fire, that waterpump is not on yet, so it may not kick over w/o coolant installed.
but at least it seemed in balance.
Next time I do this I'll do what the factory should have done, installed a keyed hub! :mad
