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Rebuild or not

 
Old 03-14-2019, 07:01 PM
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Catnip
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Default Rebuild or not

I have a 1977 coupe with a L-48 4 speed and just turned 85,000 mi. No mechanical problems, but I'd to "freshen up". Give some suggestions. Motor is unmolested.
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Old 03-14-2019, 07:05 PM
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L88Plus
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As long as you have good oil pressure, the only good reason to freshen it would be leakage past the rings or valves/stems. As long as it passes compression and/or leakdown tests and isn't blowing oil out the tailpipe, I'd leave it where it is and spend the money on other things, of which there are plenty on these cars...

Last edited by L88Plus; 03-14-2019 at 07:08 PM.
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Old 03-14-2019, 08:04 PM
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Catnip
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thanks
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Old 03-14-2019, 08:08 PM
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Peterbuilt
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If it ain't broke don't fix it!
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Old 03-15-2019, 06:55 AM
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Easy Mike
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Tune it and drive it.
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Old 03-15-2019, 07:04 AM
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derekderek
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Drive it as hard as you can. Miss a few 2-3 shifts. Now you need to rebuild.
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Old 03-15-2019, 09:56 AM
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jackson
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Yes ... and No

Seems your OE motor is good for time being; so No, leave it for another day.

But for now, Yes; get yourself a cheap, rebuildable core 350 and begin that extra-performance project,
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Old 03-15-2019, 12:31 PM
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OldCarBum
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I would start purchasing all the components to rebuild it and store them up on the shelf until you are ready to pull the motor apart.
Plan ahead for what you truly want for performance.
I started collecting parts for the body off resto/mod of my 73 big block two years ago and I now have almost everything sitting on the shelves in my garage.
Build it once and build it right.
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Old 03-15-2019, 12:35 PM
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Start saving for a crate motor. You'll never be able to build one cheaper.
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Old 03-16-2019, 12:12 AM
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Originally Posted by Catnip View Post
I have a 1977 coupe with a L-48 4 speed and just turned 85,000 mi. No mechanical problems, but I'd to "freshen up". Give some suggestions. Motor is unmolested.
Look into blueprintengines.com some really easy on the wallet items and who knows you just might scratch that itch for something a little hairier than a 180/210Hp. They are very helpful over the phone and will actually build what you need to fit into a Corvette. Worth a look.
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