Topic: Radiator draincock on my 73' ?
in Forum: C3 Cooling and Heating Systems
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Former Member
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San Antonio, TX - USA
Joined: 9/8/2003
Posts: 117
Vette(s): 1973 Corvette Roadster
Elkhart Green, 300hp 4-spd // 2003 Millinium Yellow Coupe
I can't find it !! Has any one seen a radiator without one?
Is there another way way to drain it without yanking the lower hose?
Rick
Is there another way way to drain it without yanking the lower hose?
Rick
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Former Member
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Frederick, MD - USA
Joined: 9/8/2003
Posts: 3398
Vette(s): 1969 convertible L71 427/435 4-speed black interior
If it's like my '78, it's not a petcock like you're used to seeing. It's a bolt threaded in at the lower right corner of the radiator tank.
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Fountain Valley, CA - USA
Joined: 9/11/2003
Posts: 407
Vette(s): 1969 Daytona Yellow Coupe - ZZ4/4 speed, Hurst shifter, Griffin aluminum radiator w/ Dual Spals, March Serpentine Pulley kit, Hookers with STS Racing Baffles, VB&P Suspension bits, 17" AR Hopsters, L-88 Hood
The radiatior in my '70 is like Gunslinger's '78...threaded bolt at the bottom right.
|UPDATED|11/10/2003 9:12:45 AM|/UPDATED|
|UPDATED|11/10/2003 9:12:45 AM|/UPDATED|
Former Member
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San Antonio, TX - USA
Joined: 9/8/2003
Posts: 117
Vette(s): 1973 Corvette Roadster
Elkhart Green, 300hp 4-spd // 2003 Millinium Yellow Coupe
No bolt to be found either, guess I'm yanking the lwr hose....
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Overland Park, KS - USA
Joined: 7/9/2003
Posts: 914
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.
2023 Accelerate Yellow HTC Stingray
My '73 L-82 has the standard drain petcock on the passenger side bottom corner. It's the original radiator. Hope yours has one.
Marc

Marc

1973 L-82 4 spd
Mine is on same side as the lower hose under the trans line.
|UPDATED|11/10/2003 8:01:22 PM|/UPDATED|
|UPDATED|11/10/2003 8:01:22 PM|/UPDATED|
Brian - NCM Lifetime Member
73 coupe L48, Flat-top pistons, Performer RPM Heads, Crane Cam and roller rockers, Holley 650 vac sec. Performer intake,
3.55 gear BTO 200-4R trans,
Leather seats, Seatbelt Plus 3point seatbelts, Pioneer CD player
Magnaflow Exhuast System
Dewitt radiator and dual electric fans
Borgeson Steering box

Former Member
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San Antonio, TX - USA
Joined: 9/8/2003
Posts: 117
Vette(s): 1973 Corvette Roadster
Elkhart Green, 300hp 4-spd // 2003 Millinium Yellow Coupe
Radiator is out, no drain on it at all....
Rick
Rick
To my knowloedge the Harrisons came with drain cocks on the passemgers lower side below the lower hose. It may be a threaded bolt also. Aftermarket replacements of the cheaper kind don't usually have one. Modine is a good brand for a 3-4 core with a drain cock.
in Forum: C3 Cooling and Heating Systems
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