Engine oils with the proper additives to prevent cam wear
- Thread starter wsa111
- Start date
All of the new engines have roller lifters & can use the SM oil.
The big problem with most ford engines is the small distributor gear.
You have to match the gear to the camshaft material, be it a cast core or a steel billet. This is on a ford V-8 engine.
Our old six cylinders are a prime canadate for wear.
The only gears that are worth a darn are in this order.
1. Crow cams distributor gear from austrailia.
2. A nitrated ac delco gear.
3. A stock ac delco gear.
I have run all three & only the first 2 can survive an already scored camshaft drive gear for the longest time.
I have sold a bunch of the custom nitrated ac delco gears which test out at close to 50 rockwell C in hardness.
This engine has many weak areas & this distributor gear wear deal is the number 1 weak area. Bill
The big problem with most ford engines is the small distributor gear.
You have to match the gear to the camshaft material, be it a cast core or a steel billet. This is on a ford V-8 engine.
Our old six cylinders are a prime canadate for wear.
The only gears that are worth a darn are in this order.
1. Crow cams distributor gear from austrailia.
2. A nitrated ac delco gear.
3. A stock ac delco gear.
I have run all three & only the first 2 can survive an already scored camshaft drive gear for the longest time.
I have sold a bunch of the custom nitrated ac delco gears which test out at close to 50 rockwell C in hardness.
This engine has many weak areas & this distributor gear wear deal is the number 1 weak area. Bill
Gene Fiore
Famous Member
Bill,
I'm confused about the whole dist gear issue. I am running the DUI dizzy and will be installing one of Mike's clay smith cams. Do I have to worry about changing out my dist gear?
I'm confused about the whole dist gear issue. I am running the DUI dizzy and will be installing one of Mike's clay smith cams. Do I have to worry about changing out my dist gear?
Gene, if the present gear on your DUI has no evidence of scoring don't worry at all with a new camshaft.
Lube it with moly lube just like the camshaft lobes & you will be fine.
However if there is scoring on the gear then you need to replace it.
Poor quality distributor gears are what damage the camshaft gear.
I had some ac delco gears nitrided to close to 45-50 rockwell C.
At least if you have to replace the gear use an ac delco gear.
But the hardened gear is a better choice & a crow cams gear is the best.
Lube it with moly lube just like the camshaft lobes & you will be fine.
However if there is scoring on the gear then you need to replace it.
Poor quality distributor gears are what damage the camshaft gear.
I had some ac delco gears nitrided to close to 45-50 rockwell C.
At least if you have to replace the gear use an ac delco gear.
But the hardened gear is a better choice & a crow cams gear is the best.
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