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LG5 shortblock rebuild prices (machine work only)


Guest TurboSedan

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Guest TurboSedan

i was quoted $326 today at a very reputable local machine shop (i've done business with them before and they have been great). the shortblock machine work and assembly details:

 

$80 - hot tank & mangnuflux 'V' cylinder block

 

$0 - LG5 crankshaft check

 

$66 - aligned bored .020 over ($11/hole, or just honing if no overbore needed = $30)

 

$30 - camshaft bearing installation + new installation of new block freeze plugs

 

$150 - assemble entire shortblock - includes: camshaft, timing chain, pistons, rings, connecting rods, rod & main bearings, and crankshaft

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$326 - Total in machine & assembly work

 

i'm still not sure if my 'V' block needs overboring yet or not. i would prefer NOT to overbore. cylinder #5 is partially melted and some of the rings are broken yet the cylinder wall looks perfect (wierd). i already have a new timing chain set, a new Melling 95HV oil pump, and my TGP heads were just rebuilt with 3-angle valve job in December (less than 5 miles on them). i already have the entire LG5 top end CLEAN and assembled.

 

as for parts i would need:

 

- Mahle pistons

 

- piston rings

 

- block freeze plugs

 

- camshaft, lifters, & cam bearing set

 

- set of rod & main bearings

 

- lots of gaskets and seals

 

does the amount for the machine & assembly work sound OK? about how much would i be looking at for the parts listed? can i get this thing rebuilt for under $800? besides the shortblock i will be doing the rest of the assembly & work myself.

 

TIA

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Why not save yourself that $150 and do it yourself? Have them do the cam bearings unless you have the tool, and you will need a piston ring compressor, those are really the only specialty tools needed to do it. That and a torque wrench. (which I know you have)

 

Keep your head up Josh, dont be too down on yourself. Someday it will run again. :thumbsup:

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Damn that's a lot cheaper than they do it around here...I could probably have truck frieghted my Mopar 318 out there and back and still save money :roll:

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Here in town $75 to assemble a TD bottom end, I'm sure you know what I'm talking about. My 509" Caddy block???? $350 That's just the shortblock. As a 30+ year mech. friend of mine said... "It's a race engine, let the folks who do it everyday, do it one more day"

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That doesn't seem too bad. I would let them do the whole shortblock. That way I know it's done right. Although I wouldn't know what I'm doing, I know you do. What cam are you putting in?

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Guest TurboSedan
That doesn't seem too bad. I would let them do the whole shortblock. That way I know it's done right. Although I wouldn't know what I'm doing, I know you do. What cam are you putting in?

 

yeah i really don't want to do any work on the shortblock for the same reasons. i'm not sure what camshaft yet, i gotta study up on that but i'm thinking either stock GM or something very mild.

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I went with the Crane 2020 cam, very mild upgrade from what I was told.. the car runs fine but burns a lot of gas.. but I'm pretty sure I do have a vac leak somewhere, hopefully I can track it down this year. If thats not the prob then that cam will come out so I can get it to idle down faster.. it takes a while to kick down. Soon I will try and figure it out.

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