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Old 02-19-2018, 08:25 AM   #1
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Rebuild Motor costs

Has anyone had their 454 rebuilt or replaced? I am wondering what that would cost. I would guess $3000 to have it rebuilt.

John
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Old 02-19-2018, 01:21 PM   #2
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Has anyone had their 454 rebuilt or replaced? I am wondering what that would cost. I would guess $3000 to have it rebuilt.

John
Shouldnít be that much...call around....maybe if they have to pull and reinstall...call a gm dealer and see if thy have any new complete ones...
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Old 02-19-2018, 03:48 PM   #3
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Lots of options.
I've done 2x 454's myself, but I'm a little odd in many ways!

A good local rebuilder is probably the second most cost effective.

GM crate motor are fantastic, and built right, but at a price... I think the 502 crate is about $8k...

My 345 has a "Jasper" re manufactured motor in it and it pulls like a train, and came with a good warrantee...

Unless you are pulling it yourself, the work to remove and reinstall is a big chunk of the cost.

I'd also be interested to know how many miles on your 454 and how it failed?
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Old 02-19-2018, 04:12 PM   #4
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A Jasper rebuild can be a very suitable option, and it will have a national warrantee. If you have a local shop do it, make sure thereís some sort of coverage for your road use. If it fails a thousand miles from home, towing it home for warrantee work isnít an option.

Iíve done a few 454ís myself, and costs have been dependent on the machine work and parts needed, as well as the performance expectations. Curious why you need to rebuild yours...
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Old 02-19-2018, 10:31 PM   #5
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I'm looking at buying a 310 with a blown motor. Looking at having it shipped to me and then putting in a motor. Just trying to get an idea of the setback.

I love that you guys have rebuilt your own. I would love to try that.

The guy said it over heated and now it is blown. I don't know what that means but I am guessing the cylinders are scored unless it seized and he through a rod or something. I could ask more.

I had an old Harley that I over heated and it blew a cloud of smoke after that. I took the heads off and had them bored and put in new pistons etc. Only two cylinders but what the heck. I might be able to do it on a 454.

Did you have to pull the engine or can you just take the heads off and rebuild it in place?
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Old 02-20-2018, 05:23 AM   #6
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If itís been overheated, I would plan on pulling the engine block to do it right. It will likely need bored, and Iíd check the decks and heads to make sure theyíre still flat. Youíll need a good machine shop to do that work. Even a dealer would have to send it out, as I have yet to find a dealer with a boring bar and deck grinder.

Hopefully the block wasnít cracked, or the cylinders were not damaged beyond the safe limits for boring. The only other thing to be wary of is if water got into the oil and caused bearing/journal damage. More machining expense will be required.

This motor is stupid heavy, by the way. About 750lbs dressed. Be careful with the removal of the motor. Itís a lot of weight on the end of a lift, and youíll have the lift arm extended to reach into the MH. If youíre thinking about taking it apart inside the MH, make sure you get help with the heads. Theyíre nearly 100lbs each.

Personally, I like the Jasper idea that Keyair suggests. Swap it out and be done. No surprises.
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Old 02-20-2018, 06:28 AM   #7
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Jasper's the way to go, been there, done that. Regards. Bob
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Old 02-20-2018, 08:06 AM   #8
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454 Rebuild

Jasper is the way to go. Great Warranty, good anywhere. Have installed several as a result of a rather ambitious drag racing career in my younger days. They NEVER turned down a warranty claim. Jasper all the way. Happy travels.
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Old 02-20-2018, 10:36 AM   #9
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You could look a round your area and there is probably a small shop that would do it.....as you will have to have it bored.....as they are noted for scoring the clyinder walls....hope it doesn’t have a spun main bearing......
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Old 02-20-2018, 11:15 AM   #10
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Or put a Cummins in....
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Old 02-20-2018, 12:12 PM   #11
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Or put a Cummins in....


Keyair has all of the good suggestions...
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Old 02-20-2018, 03:34 PM   #12
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Many have said Jasper. Seems like if I found a Moho in a distant land that had a blown engine the thing to do would be buy it and have a local shop put in a Jasper and then Drive it home. I looked into having a MoHo shipped to me from Florida and it would cost me $2500. I might be able to get a Jasper installed for $3000. With their nation wide warranty it wouldn't matter if I had a problem with it later since I would not have to go back to Florida.

Hate to spend $2400 to get it to me only to spend another $3000 for a motor. Sheese!

I probably would require a couple of plane tickets 1 to go look at it and setup the motor replacement deal and then another to go get it.

John
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Old 02-20-2018, 05:02 PM   #13
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John,

You're looking at $2400/$3000 for the motor. Labor to remove and replace will almost definitely be more than the motor cost, quite possibly two to three times as much.

Be sure and go into this deal with your eyes wide open!!

Brad
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Old 02-21-2018, 08:32 AM   #14
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Many have said Jasper. Seems like if I found a Moho in a distant land that had a blown engine the thing to do would be buy it and have a local shop put in a Jasper and then Drive it home. I looked into having a MoHo shipped to me from Florida and it would cost me $2500. I might be able to get a Jasper installed for $3000. With their nation wide warranty it wouldn't matter if I had a problem with it later since I would not have to go back to Florida.

Hate to spend $2400 to get it to me only to spend another $3000 for a motor. Sheese!

I probably would require a couple of plane tickets 1 to go look at it and setup the motor replacement deal and then another to go get it.

John
. You better look real close at this.....there could be a lot more wrong with this baby....leaverrite.....leave it where you found it.....
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