Billet keyed hub
Large Impressive Member
Joined: Jul 2003
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From: Good health is merely the slowest possible rate at which one can die
St. Jude Donor '04-'05-'06-'07
I had heard there was a difference in the distance between the engine and the accessory belt, must be the damper and not the hub that does it.
I don't see how you could get the later, '95 and up, Opti-Spark off with a round flange -- my '92 has been converted to a '95 Opti-Spark.
Tom Piper
I don't see how you could get the later, '95 and up, Opti-Spark off with a round flange -- my '92 has been converted to a '95 Opti-Spark.
Tom Piper
You have to have the three-way turned just so to get the later opti out. I can't imagine how you'd do it without the open spaces. The early opti has a smaller base so perhaps it's not an issue with them.
2019 Z06 2LZ A8 Coupe
Joined: Jul 2005
Posts: 373
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From: Atlanta GA
Golen Engine Service will broach a factory hub for $75. I have a 96 and I have already purchased a 95 timing cover and hub as I plan to remove the unnecessary misfire detection setup when I do my cam swap. I plan to send out my hub to Golen to be broached.
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Golen Engine Service will broach a factory hub for $75. I have a 96 and I have already purchased a 95 timing cover and hub as I plan to remove the unnecessary misfire detection setup when I do my cam swap. I plan to send out my hub to Golen to be broached.
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
I won't put money into my existing hub that already has a sleeve on it -- it just doesn't make sense.
Tom Piper
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Golen Engine Service will broach a factory hub for $75. I have a 96 and I have already purchased a 95 timing cover and hub as I plan to remove the unnecessary misfire detection setup when I do my cam swap. I plan to send out my hub to Golen to be broached.
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
From Golen's site:
LT1 Crank Hub Modification:
The stock LT1 crank hub is not cut for a crank key from the factory. If you are purchasing a Golen High Performance LT1 engine it is highly recommended that you have your stock LT1 crank hub broached to accept the crankshaft key. We install the crankshaft key in every LT1 engine that we sell and we offer a broaching service where you can send your stock LT1 crank hub to us and we will broach it for $75 plus return shipping.
http://www.golenengineservice.com/ht...ml#crankhubmod
I don't have a good '95 hub to send them for broaching -- which is what I need.
But, I do have a like new '96 hub I am wondering if they would take it in a trade.
Tom Piper
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
At this time, the stock hub is not available from GM.
If you try to order one, the reply is it is on hold because of QA purposes with no date available given.
Thunder Racing does not have the keyed stock hubs anymore either.
They have a keyed after-market unit with the round flange.
The C4 is going the way my C2 did -- for a few years, almost everthing was discontinued.
But, for the C2, you now can buy one in pieces and assemble it yourself (I think the birdcage is the only thing not being produced).
You can even buy new frames made with the original tooling for about $5K.
Tom Piper
If you try to order one, the reply is it is on hold because of QA purposes with no date available given.
Thunder Racing does not have the keyed stock hubs anymore either.
They have a keyed after-market unit with the round flange.
The C4 is going the way my C2 did -- for a few years, almost everthing was discontinued.
But, for the C2, you now can buy one in pieces and assemble it yourself (I think the birdcage is the only thing not being produced).
You can even buy new frames made with the original tooling for about $5K.
Tom Piper
Le Mans Master
Joined: Mar 2000
Posts: 8,950
Likes: 4
From: Lafayette LA
I have one for sale: $100 shipped
Pioneer heyed hub, part number 872015
Fits: 92-95 LT1 Corvette & 93-95 LT1 F-body.
It is brand new in the original box. Never used, never even unwrapped. It has a round hub with 6 holes.
PM me if interested
Pioneer heyed hub, part number 872015
Fits: 92-95 LT1 Corvette & 93-95 LT1 F-body.
It is brand new in the original box. Never used, never even unwrapped. It has a round hub with 6 holes.
PM me if interested
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Thanks
Tom Piper
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Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
It looks like a quality piece; I compared the measurements of most dimensions with the original hub with dial-calipers and a micrometer.
It is universal with a round flange, it comes with a roll-pin that I had to remove for my purpose.
The flange is not quite as thick as the three "ears" on the original hub.
So, the back of the flange is not as close to the motor as the back of the three "ears." And, that makes me wonder if the Opti-Spark could be removed without removing the hub.
Tom Piper
Thread Starter
Safety Car
Joined: Feb 1999
Posts: 3,504
Likes: 4
From: Mexico Beach FL
Update
I have the new after-market keyed hub on my '92 and running with the LT4 dual-mass damper.
From what I see, it is working fine.
Because the round flange is not quite as thick as the three "ears" on the stock hub, it might be possible to remove the Opti-Spark without pulling the hub.
Even if the hub is in the way, I think it would only have to be moved about 1/4" instead of pulling it completely.
And, since I have the Kent-Moore tool, it would be a walk-in-the-park anyway.
Tom Piper
From what I see, it is working fine.
Because the round flange is not quite as thick as the three "ears" on the stock hub, it might be possible to remove the Opti-Spark without pulling the hub.
Even if the hub is in the way, I think it would only have to be moved about 1/4" instead of pulling it completely.
And, since I have the Kent-Moore tool, it would be a walk-in-the-park anyway.
Tom Piper
