Lt1 coming out
TECH Regular
Joined: Apr 2013
Posts: 456
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Check the timing chain for slack and replace if necessary. Check your accessory belt if it hasn't been replaced in quite some time. Check your spark plugs, it would be a great time to throw iridium plugs in if you don't already have them! You can always give the valvetrain a look over while the engine is out. This is what comes to my mind but others may chime in on other stuff.
TECH Resident
Joined: Jun 2002
Posts: 943
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From: Houston
Great time to check for front and rear main seal as well as the infamous intake gasket leaks that occur on most all LT1's. As mentioned above, a quick run through the valvetrain is always a good idea because with 99k miles it might could use a little tightening up though not likely.
Thread Starter
Teching In
Joined: Oct 2018
Posts: 5
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Check the timing chain for slack and replace if necessary. Check your accessory belt if it hasn't been replaced in quite some time. Check your spark plugs, it would be a great time to throw iridium plugs in if you don't already have them! You can always give the valvetrain a look over while the engine is out. This is what comes to my mind but others may chime in on other stuff.
TECH Regular
Joined: Apr 2013
Posts: 456
Likes: 5
Furthermore, the cracking seemed to happen too often with my then Granatelli spark plug wires. I eventually tossed them and threw on generic "Voltmaster Plus" spark plug wires that came with my Jasper engine and I have not had a problem since. It's funny that the better move was to go with generic spark plug wires but the Granatelli's may have some issue in their manufacturing that surges spark and cracks the spark plug casings, I can't verify this but it is a hunch.
