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Topic: Correct v-belt 1974 L82

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Re: Correct v-belt 1974 L82 (6/16)
 10/21/20 9:05pm
gapl1953
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Springbrook, WI - USA

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1974 L82


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On certain 427's and 454's they have the same setup as mine with the belt only going from the crank to the water pump.

They use GM #3952336 belt. That belt is too small for my application.

Re: Correct v-belt 1974 L82 (7/16)
 10/21/20 9:58pm
F4Gary
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Grapevine, TX - USA

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gapl1953 said:

On certain 427's and 454's they have the same setup as mine with the belt only going from the crank to the water pump.

They use GM #3952336 belt. That belt is too small for my application.



How do you install a belt on a mid 70's that only goes from the crank to the water pump?  They don't move.



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Re: Correct v-belt 1974 L82 (8/16)
 10/22/20 6:23am
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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Assy manual DOES show a single belt from crank to w/p pulley. Never seen one set up like this. The only way to change it would be to remove the fan and pulley. I have to assume it was an "emergency" type deal in case the alt belt broke/failed. Ignore the smog pump in the drawing...the legend calls out "belt w/pump (exc C60 or N41).

 



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Re: Correct v-belt 1974 L82 (9/16)
 10/22/20 8:31am
gapl1953
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Springbrook, WI - USA

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1974 L82


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Yes, that to replace the belt you need to remove the pulley, install the belt on the pulley and reinstall both to the engine together. The assembly book for 1974 shows it that way on a vin "y" (454) motor. I may be dating myself but many vehicles had a set up like this in my youth. I have tried all the regular providers and found a gap for the 1974 year belts so I went online and found a place, VBelt Supply.com. They have many different size belts listed, I ordered 6 different belts from them and I'll see if any of them will fit. Check them out their prices are not bad.

 

Thanks for the replies,

Greg






|UPDATED|10/22/2020 6:31:58 AM (AZT)|/UPDATED|
Re: Correct v-belt 1974 L82 (10/16)
 10/22/20 11:11am
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Duncanville, TX - USA

Vette(s):
#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 pic above is directly from the '74 Assembly Instruction Manual, for L48 and L82 engines. THE OE part # is 3935420, which is still available from several sources.

PARAGON CORVETTE shows it for $28.  Quanta Products has correct part #, dated belt for $26, if you are going for Judging points.



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Re: Correct v-belt 1974 L82 (11/16)
 10/22/20 11:33am
gapl1953
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Springbrook, WI - USA

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1974 L82


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Adams' Apple said:

The pic above is directly from the '74 Assembly Instruction Manual, for L48 and L82 engines. THE OE part # is 3935420, which is still available from several sources.

PARAGON CORVETTE shows it for $28.  Quanta Products has correct part #, dated belt for $26, if you are going for Judging points.

For whatever reason, I didn't  see that page. I'll blame it on senility.

It looks like the right size.


Thank's,

Greg



|UPDATED|10/22/2020 9:33:45 AM (AZT)|/UPDATED|
Re: Correct v-belt 1974 L82 (12/16)
 10/22/20 11:35am
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Duncanville, TX - USA

Vette(s):
#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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gapl1953 said:

For whatever reason, I didn't  see that page. I'll blame it on senility.

 LOL!! I hear ya! lol




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Re: Correct v-belt 1974 L82 (13/16)
 10/22/20 12:02pm
manchestersharkLifetime Member
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Equinunk, PA - USA

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So....Now for my question. Were L-82s Big Blocks or just small blocks? It was my understanding that Big Blocks had a different identifier. 

Re: Correct v-belt 1974 L82 (14/16)
 10/22/20 6:31pm
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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 L82 took the place of the LT1 as the "high performance" small block starting in '73. It is a small block 350.



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Re: Correct v-belt 1974 L82 (15/16)
 10/22/20 8:36pm
manchestersharkLifetime Member
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That was my understanding. So....What am I missing with the 427 and 454 in the equation? Did the BBC, and SBC have the same set up? Why is this so new to many of us.

Re: Correct v-belt 1974 L82 (16/16)
 10/22/20 8:40pm
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Duncanville, TX - USA

Vette(s):
#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


Joined: 11/8/2003
Posts: 19782

manchestershark said:

. So....What am I missing with the 427 and 454 in the equation? Did the BBC, and SBC have the same set up?

Not really sure what it is you're asking, Mark. If you're asking about belt set-ups, then no, the small block have different belt/accessory setups from big blocks. Even small blocks have different set-ups depending on equipment/options.




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