Pontiac 400 Cam Bearing Issue
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Pontiac 400 Cam Bearing Issue
Using Durabond P-4 cam bearings. Front bearing installed so the oil hole is aligned properly with the feed hole from the main. Put the HR cam in to check fit, noticed the cam bearing misses about .200 of the cam journal, like it needs a wider cam bearing. If I put another bearing in flush with the front of the block it would solve that problem but oil hole won't line up. Thought about drilling a new oil hole but it would be very close to the back edge of the bearing.Any ideas?
Re: Pontiac 400 Cam Bearing Issue
Check with luhn performance,they do custom pontiac cam bearing.Tom
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Re: Pontiac 400 Cam Bearing Issue
Just drill a new hole where you need it to allow good alignment of the bearing front to rear.
Be sure to deburr the new hole.
Also note to be careful with the length of the bolts that retain the valley pan.
If they are too long they will pinch off those two Cam bearings.
Be sure to deburr the new hole.
Also note to be careful with the length of the bolts that retain the valley pan.
If they are too long they will pinch off those two Cam bearings.
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Re: Pontiac 400 Cam Bearing Issue
Pretty sure that is normal for Pontiacs. I think there is a little slot that lets oil feed out to the back of the timing gear. If you put the bearing in all the way to the front you will cover that slot. I have one here and even though I already have the cam bearings out you can see where the original ones were. Leave it alone and worry about other things There are plenty of engines with cam bearings that are nowhere near the same length as the cam journals.
Here is a picture of one a guy is selling on Ebay:
Here is a picture of one a guy is selling on Ebay:
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Bill Koustenis
Advanced Automotive Machine
Waldorf Md
www.enginerepairshop.com
Advanced Automotive Machine
Waldorf Md
www.enginerepairshop.com