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Old 06-01-2013, 11:54 AM
mdlave mdlave is offline
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Engine Replacement Opinions


Well, it looks like my 460 needs some serious valvetrain work.

If it looks like I'm getting above $500 or so just in parts (assuming I can do the work myself, it may be better long term to just replace it. I'm looking at a few choices:

1. An already built and running 460 - $1200
Good: upgraded cam, intake, and carb, all specs, high quality performance parts
Bad: From a jet boat, so I'm sure it has seen plenty of vigorous use, and hours on it are unknown.

2. An engine from these guys (cmengines.com) - $1600
Good: C9ve heads, 12 month warranty, reputable, highly ranked company
Bad: A running engine could be pulled for much cheaper.

3. A craigslist engine - $600
Good: Runs well, cheap, less than 100k
Bad: Don't know anything else about it.

Any thoughts, especially on things I haven't considered?
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Old 06-02-2013, 11:58 AM
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V10man V10man is offline
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well here are my thoughts...

#1, boats usually run at high rpm. Cam and such may be set up for that. May not do so well in a truck

#2, if that is a long block with the C9 heads watch out on the compression ratio. Needs to be 9.5 or less for pump gas. Did they install hardened valve seats on the exhaust?

#3, who knows what you're getting
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Old 06-02-2013, 12:52 PM
mdlave mdlave is offline
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Thanks, good info.
1. Didn't think of that. I'll look into it.
2. This engine is supposed to be stock replacement for a 1969 or 1970 passenger car, so original manufacturer's specs.
3. I agree. Big negative.
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Old 06-02-2013, 08:10 PM
mdlave mdlave is offline
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This is the cam in the marine engine.
http://www.summitracing.com/parts/cca-34-225-4
Looks like it would be a decent street cam?
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Old 06-02-2013, 08:10 PM
 
 
 
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