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Topic: L-82 Tear down

in Forum: C3 Engines


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Re: L-82 Tear down (8/18)
 7/5/12 10:19am
tonytheroofer
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Rochester, NY - USA

Vette(s):
1980 L- 82 fully restored and upgraded.


Joined: 6/12/2012
Posts: 95

If you are not looking for 500hp . but a more modest 350 to 400 I would spend the money and get a crate engine from GM performance. My 1980 has the ZZ4 motor and it runs , idles and performs perfectly. 

The cost is well worth it and if I am not mistaken they come with a 3/36 warranty. And although 355 hp may not sound like a huge amount keep in mind the HP at the rear wheels will exceed the total hp your original motor put out at the flywheel.  

Just food for thought.. And not for nothing but NEW not rebuilt in my book is a better choice when one considers some of the things you have had to deal with thus far 


______________
1980 , ZZ430 , 3.92 rear , 700R4 2400 stall NEW EZ EFI 
Re: L-82 Tear down (9/18)
 7/5/12 12:41pm
Adams' AppleLifetime Member
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Duncanville, TX - USA

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#1-1974 L-48 4spd Cp Med Red Metallic/Black deluxe int w/AC/tilt/tele./p/w-p/b/ Am-Fm/map light National/Regional/Chapter NCRS "Top Flight" #2-1985 Bright Red/Carmine Cp.L-98/auto Member: NCRS, NCRS Texas, Corvette Legends of Texas


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The 302 was a 327 block with a large journal 283 crank. The block itself will take the 350 guts, but...IF what you have is indeed a genuine DZ block, I would sell that to one of the Camaro freaks....that would probably give you enough cash to either buy a crate engine, or build whatever you want. Original, genuine DZ Z/28 engines are like gold to the Camaro crowd....

|UPDATED|7/5/2012 9:41:27 AM (AZT)|/UPDATED|


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Re: L-82 Tear down (10/18)
 7/5/12 4:57pm
tttankerGold Member
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Peru, IN - USA

Vette(s):
1978 Blue Edition 2001 Torch Red


Joined: 6/2/2010
Posts: 87

I haven't ruled out a crate and 300+ would be plenty. I enjoy building my own and do have the time.
Re: L-82 Tear down (11/18)
 7/5/12 5:03pm
tttankerGold Member
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Peru, IN - USA

Vette(s):
1978 Blue Edition 2001 Torch Red


Joined: 6/2/2010
Posts: 87

Wanted to put the DZ back in a Camaro so probably won't go that way. Appreciate the advice. Any thought on how large an oversize cyclinder would  be within limits for the L-82?. .30 is a big as I've ever gone.
Re: L-82 Tear down (12/18)
 7/5/12 10:16pm
tonytheroofer
Former Member

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Rochester, NY - USA

Vette(s):
1980 L- 82 fully restored and upgraded.


Joined: 6/12/2012
Posts: 95

It is fun to set up an engine , nothing wrong with that route !

Here check this 


for 4k , you really get your money's worth and it is new and to me new means a lot more then any rebuild , you have a warranted factory engine, at the cost difference cant be much at all from a good rebuild.  


______________
1980 , ZZ430 , 3.92 rear , 700R4 2400 stall NEW EZ EFI 
Re: L-82 Tear down (13/18)
 7/6/12 8:15am
tttankerGold Member
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Peru, IN - USA

Vette(s):
1978 Blue Edition 2001 Torch Red


Joined: 6/2/2010
Posts: 87

Thanks Tony for website. Not glad L-82 went bad but I enjoy looking at all the options. Never dealt with Jegs but I hear a lot of good about their products. This C3 website is like having a jobber and mechanic living in your garage.
Re: L-82 Tear down (14/18)
 7/12/12 8:21am
tttankerGold Member
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Peru, IN - USA

Vette(s):
1978 Blue Edition 2001 Torch Red


Joined: 6/2/2010
Posts: 87

Tony, ordered a  GM crate 350, 4 bolt, long block from JEGS Tues and they are delivering it this morning to my front door. $1499.00. No tax , no core, and free shipping. $ 13.00 for handling fee. ( Hope engine is as fast as their shipping) Bought new headers and Edler intake to finish the top. I'm a Quadrajet nut and I have two of them in boxes. Probably run it for the rest of the year and then put a few more horse power in the guts this winter. ( I know it would of been cheaper to order it that way but I enjoy digging into with when its cold and snowing.) Might sleeve the L-82 or move rotating parts to another block. Thanks for eveyone's voice ,,
Re: L-82 Tear down (15/18)
 7/12/12 8:40am
tonytheroofer
Former Member

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Rochester, NY - USA

Vette(s):
1980 L- 82 fully restored and upgraded.


Joined: 6/12/2012
Posts: 95

There ya go .. Cant beat that deal with a stick .. 

______________
1980 , ZZ430 , 3.92 rear , 700R4 2400 stall NEW EZ EFI 
Re: L-82 Tear down (16/18)
 7/12/12 12:03pm
danascar
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Germansville, PA - USA

Vette(s):
1974 Coupe 358ci 4 speed Black w/Medium Saddle interior w/79 custom leather seats. . 1999 C5 Convertible, 6 speed, Atomic orange, Oak interior.


Joined: 1/28/2010
Posts: 858

tttanker said: Wanted to put the DZ back in a Camaro so probably won't go that way. Appreciate the advice. Any thought on how large an oversize cyclinder would  be within limits for the L-82?. .30 is a big as I've ever gone.


I'm running  .040 over on my 350 in my 74....that would require you to go with .040 pistons. I have flat top pistons and it runs great. Not sure if the L-82 block is any different from other 350's of that era. My engine is not the original that came with the car. 

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DanT

Re: L-82 Tear down (17/18)
 7/13/12 5:05pm
73shark
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Overland Park, KS - USA

Vette(s):
1973 Orange Metallic Coupe (orig owner), L82, 4 spd (WR), PS, (A/C & PW (I installed from wrecked 73)), leather, AM/FM Stereo, ran with '65 FI unit earlier & will again some day.


Joined: 7/9/2003
Posts: 864

AFAIK the L-82 block is the same as the others except it is a four bolt block.

______________

1973 L-82 4 spd

Re: L-82 Tear down (18/18)
 7/26/12 9:10pm
tttankerGold Member
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Peru, IN - USA

Vette(s):
1978 Blue Edition 2001 Torch Red


Joined: 6/2/2010
Posts: 87

Dropped the GM crate motor in and back on the road. Didn't put the headers on yet till I get a couple hundred miles on it. Runs and sounds great. Sure don't miss that annoying ticking noise the L-82 had. ( Cracked piston at wrist pin from rods installed backwards) Appreciate all the input from everyone. Nice people!!

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