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Old 10-24-2010, 10:09 PM   #1
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P30 cooling issue on passenger side

Hello all

Looking for insight into the “fix” suggested by the GM service bulletin regarding the air flow on the passenger side of the 454 motor. Anyone install this panel or does anyone have one factory installed post 1991 chassis? Re: service bulliten 86-255. Supposedly the Nodular iron was supposed to fix the warping issue but did it address the cooked spark plug wires? I ask because I see in my receipts I received with the MH that 3 plug wires were replaced on that side.Is this a real issue?


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Old 10-24-2010, 10:20 PM   #2
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clarify size

1991 chassis 1992 Rockwood 27' if this helps

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Old 11-18-2010, 09:39 PM   #3
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454s are known for cooking wires, so you'll want to get a good set that can handle some heat.
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Old 11-19-2010, 01:11 AM   #4
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Location: Monroe, Ga USA
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..... Let me welcome you to IRV2.... Chevrolet installed Plug wire protectors on all of those engines when new @ the factory. They were a metal tubular bolt on item that shielded the spark plug as well as the wire. Somewhere down the road, they could have been removed, or possibly broke off. They did`make it hard to pull the plug wire off, ie changing plugs. Good luck, follow the yellow brick road safely.
David G.
USAF 1959-1963/ JFK Innaguration parade 1961,
1997 Fleetwood Southwind 37Y, 460 ENGINE on FORD chassis, Power Platform with Tag Axle.
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Old 11-19-2010, 07:41 AM   #5
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When I had my '87 Bounder I had to have the factory headers replaced a couple of times for cracking. I think twice on the driver side and once on the passenger. I think it was covered up to 50,000 miles. I then put Doug Thorley headers on it and the ceramic plug wires and never had another issue. Sold it at 95,000 miles.
2001 34' Alpine Coach
2008 Jeep Rubicon or 2012 Ford F150 4x4 Lariat towds
or a couple of different trailers
Retired in Apple Valley, California
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