Stripped Camshaft???? - Chevy Impala SS Forum
 
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post #1 of 4 (permalink) Old 03-08-2019, 08:49 PM Thread Starter
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Stripped Camshaft????

Hello all
took my car to mechanic to install opti spark
he didn't know what he was doing
took me a year to educate myself on opti spark and timing
replaced it myself
Car drove wonderful over a year
Found that it was time to replace my timing cover gasket
REPLACED!!!!
now i can't get the crank hub on the camshaft because I fear the camshaft is stripped

Couldn't get a threaded 7-16-20 rod to screw in tight
Always has too much "wiggle room" and can not tighten with installer tool (washers and bolts)
Any help?
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post #2 of 4 (permalink) Old 03-08-2019, 10:40 PM
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The camshaft is hardened and tempered steel. It is nearly impossible to strip the threads. You may have the wrong size bolt.

1991 OCC 461 (.030 over 454) BBC, 3.23 posi, flash to pass, drop spindles & springs, Impala rims, Hydroboost, Recaros, MOMO/wood SW w/QR, custom wood shift knob, Pioneer DEH P77DH
1992 OCC now with 5.7 tbi, DEH P77DH
For a parts list, check https://www.impalassforum.com/vBulle...ion-parts.html
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post #3 of 4 (permalink) Old 03-09-2019, 04:46 AM
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I am sure you mean the crankshaft, not the camshaft, because there's no hub on the cam.

The bolt hole is probably stripped and its not the end of the world. HeliCoil makes an insert kit and it works fine. It's a bitch to do with the engine in the car, but it can be done if you're careful. Ideally, remove the radiator and condenser so that you can see what you are doing and make sure the drill is straight.


1995 Caprice ERE 383, CIA long tubes, Dynomax VT's, RAISS, Kore3/Z06 brakes, 3.42 posi, Boss 338 20's, 12 way seats, Impala SS console, etc etc etc
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post #4 of 4 (permalink) Old 03-09-2019, 11:22 AM
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Think you are referring to crank shaft. You can "try" a thread tap tool same size/thread pitch as hub bolt to see if you can chase the threads clean.

What may have happened is someone tried to put the hub on crank by pulling it on with the bolt. There are only a few threads the bolt would catch on with the hun just starting on the crank so not much thread grab and the first few threads in the crank will strip but the rest should be fine if this was the case

you never want to use a damper hub bolt to "pull" the hub on. Make a home made install tool using all thread rod, washers, thrust bearing and a nut

If the threads are really FU and a tap won't fix them....you have to install a heli coil as Atlanta notes

\'96 BBB 383/T-56
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