Winterization of an LT1 - Checklist

[BigGixxerFixxer]

NAPA Gold 1060 is my filter of choice.
Grand re-opening at my local store.
$4.17 each so I cleaned off the shelf.



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[greeneng]

Thanks for the quick replies. Both of the filters mentioned cross to the M1 filter I use. But, none cross to a Corvette of that year. And, searching for a filter for a 1995 Corvette does not bring up the LT1 engine as an option.
So, I will keep using what I have used, the Mobil One High Mileage 10W-40 and the M-1 filter.
It was in the 40's last night so the season is winding down now.

[Ski-me]

Parts List:

Oil Filter l- Napa Platinum 41060
Napa Fuel Filter - 3481 (Wix 33481)
Napa Fuel Filter - 3482 (Wix 33482)
6 Quarts Valvoline VR1 Synthetic 20W-50
6 Gallons RV Anti-Freeze

[WeekendsR4Me]

For the two fuel filters, there seems to be some conflicting information in these threads. I've seen:

2 in-line fuel filters (1 @ tank, 1 @ motor) WIX #- 33481

And also:
Napa Fuel Filter - 3481 (Wix 33481)
Napa Fuel Filter - 3482 (Wix 33482)

I've e-mailed MasterCraft and am awaiting confirmation on their answer, but any definitive information, specifically for a 1998 LT1 in a ProStar 205, on which filter numbers go where (tank vs. engine)?

Super informative thread...I appreciate the insight from all!

[Ski-me]

Best thing to do is visually see what you have, they are two very different filters for sure! The one at the tank (on mine), did not have a filter. Hence the reason I cut one in. This was upstream of my fuel pump and wanted to have one there too.

[BigGixxerFixxer]

Best thing to do is visually see what you have, they are two very different filters for sure! The one at the tank (on mine), did not have a filter. Hence the reason I cut one in. This was upstream of my fuel pump and wanted to have one there too.

I’ve been thinking of putting one before the pump also.
Remember what you used?
Appreciate any insight you might have


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[Ski-me]

I’ve been thinking of putting one before the pump also.
Remember what you used?
Appreciate any insight you might have


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I used the Wix 33482 and just cut the line on top of the tank. Then used two hose clamps to secure. Works great!

[Ski-me]

It was a while since I have looked at the pictures I uploaded....and I see our wonderful Photobucket website has stepped in to blur everything. So today I went in and updated/uploaded all the pics to the Teamtalk website instead. Hope this helps everyone!

*** Pics and procedure start on Page 7 ***

[jawest79]

Noob here asking the same ole question one last time.

I have the Predator 5.7 310HP engine. It is fuel injected, so do I need to fog under the flame arrestor or just fog each cylinder? I have read just cylinders or do both but I am still confused.

Also, manual says 20W/50 for oil, am I losing something by going Rotellla 15W/40?


Thanks.


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[Ski-me]

On mine, I will fog into each cylinder via plug removal of each one and not through the TB unit.

[Rocketboy]

So I Am winterize got for the first time. Outboards were so much easier!!

So I have hoses off and pulled the plugs on exhaust and one on the block. See picture for other side of block. I am thinking I need to pull this to drain other side of block.

It is stripped and nothing fits it. Is the a temp sensor?

Thanks for the help!!

[jawest79]

So I Am winterize got for the first time. Outboards were so much easier!!



So I have hoses off and pulled the plugs on exhaust and one on the block. See picture for other side of block. I am thinking I need to pull this to drain other side of block.



It is stripped and nothing fits it. Is the a temp sensor?



Thanks for the help!!

That’s the knock sensor, and yes you should pull that out to drain the water.


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[gotta_ski]

Reading this thread, I have an issue with the checklist in the first post. Changing the spark plug wires every other year isn't just overkill MCOCD, its stupid. Do you feel the need to change the plug wires in your car every year? Total waste of time and money for something that should last you at least 10 years, if not longer.

[JimN]

So I Am winterize got for the first time. Outboards were so much easier!!

So I have hoses off and pulled the plugs on exhaust and one on the block. See picture for other side of block. I am thinking I need to pull this to drain other side of block.

It is stripped and nothing fits it. Is the a temp sensor?

Thanks for the help!!

The hole is stripped? How are you keeping the sensor in place? If you're using some kind of cement or sealant, repair the hole and replace the sensor the right way- that's a necessary part of the system and if the ECM doesn't get signal from it, you could damage your engine. If you don't remove it and the water inside freezes, the block will crack.

[Ski-me]

Are you saying "its stripped" on the outside where you unscrew it with a crescent wrench, or the threads inside the block are stripped? Is it similar to post #79 picture?

That's the knock sensor and needs to be removed. If it's just the rounded corners for a wrench to get onto the end, you could use a larger channel lock plyers to "gently" get a grip on it and unscrew it.