Expansion tank question?
Thread Starter
Advanced
Joined: Sep 2005
Posts: 89
Likes: 0
Expansion tank question?
I have a 1970 L46 350/350, no A/C. I have no expansion tank, did this model come with a aluminum Harrison expansion tank? If so, does anyone have pictures of it location and hose route setup.
Team Owner
Joined: Jun 2000
Posts: 38,923
Likes: 1,482
From: Southbound
Cruise-In II Veteran
Nope. It varied per radiator application. Usually, cars with the 4 row Harrison copper radiator did not get expansion tanks.
Carefully reading the AIM will also let you know whether your particular radiator got the tank.
...Your best bet is to buy an AIM (assembly instruction manual) to see how mounted and hose routing...
Carefully reading the AIM will also let you know whether your particular radiator got the tank.
Thread Starter
Advanced
Joined: Sep 2005
Posts: 89
Likes: 0
Thanks for all the replies.
Le Mans Master
Joined: Jan 2007
Posts: 5,485
Likes: 7
From: Peekskill NY
[QUOTE=RMVette;1571916330]
I couldn't remember who's it was! I while back I requested pics of L-46 engine bays so I could get mine back to the way it should be, and filed all the pics posted for my reference.
Glenn
Glenn
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
5 Best & 5 Worst Corvette Daily Drivers
Joe Kucinski
The Headlights of Every Corvette Generation Explained
Joe Kucinski
5 Best & 5 Most Overrated Corvette Track Packages of All Time!
Joe Kucinski
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
Administrator
Joined: Jul 2000
Posts: 54,007
Likes: 6,215
From: About 1100 miles from where I call home.
GD70 is correct. This has been hotly debated. Do a search on the NCRS site for a lot of information.
The 69 Judging guide says they did come with the expansion tank for '69, but upon further review it's been established that quite simply, some 350 hps came with the aluminum radiator, which in turn came with the expansion tank, and some 350 hp cars came with the copper radiator, which came with no tank. I've seen examples of both. Heck, I've OWNED examples of both!
The 69 Judging guide says they did come with the expansion tank for '69, but upon further review it's been established that quite simply, some 350 hps came with the aluminum radiator, which in turn came with the expansion tank, and some 350 hp cars came with the copper radiator, which came with no tank. I've seen examples of both. Heck, I've OWNED examples of both!
Race Director
Joined: Jul 2001
Posts: 15,892
Likes: 42
It's very simple: No Corvette came with more than one radiator cap. No Corvette came with less than one.
Pre -'73 Corvettes:
If your radiator has a cap, you don't need an expansion tank. If it doesn't have a cap, you need an expansion tank.
'73 and up Corvettes did not have expansion tanks, only coolant recovery tanks. Different animal.
Pre -'73 Corvettes:
If your radiator has a cap, you don't need an expansion tank. If it doesn't have a cap, you need an expansion tank.
'73 and up Corvettes did not have expansion tanks, only coolant recovery tanks. Different animal.
