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» Help with newly acquired 72 350 Auto by Jimbo64 on Mon 21 Jan 19 18:31

Radiator options?



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Nosheruk

Club Member

Fri 01 Feb 19 11:05

Radiator options?


Seems to be a bit of a minefield out there for replacement rads.
Rockauto are seriously cheap. Corvette Kingdom expensive, although the Dewitts one seems to be excellent. 780 for a rad is just crazy money. They sell "Cold case" alluminium ones which look ok but i cant find any reviews.

Looking on Corvette america, there are a few options with garunteed fit alluminium ones , and cheaper brass/copper ones too. Cant get a shipping quote till i pay which seems odd.

Any advice would be great before i part with my cash please Cool

Cheers
Norman


--------------------
Corvette C3 L82 pace car, number 1117
Membership number 5195

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kentvette

Club Member

Fri 01 Feb 19 11:51

Re: Radiator options?


I had a couple of attempts at replacement radiators and on the second go I went with these people, on Ben's advice:
http://www.completeradiators.com/

I cannot praise them enough! Great help and advice, very prompt delivery, a very reasonable price and, most importantly, the radiator was an EXACT replica of the original, so no faffing around trying to get it to fit in the rubber supports etc.

Our '78 has never suffered from the cooling issues that many claim are rife in Corvettes, and when I fitted this new rad from Complete I actually had to change the thermostat as it ran too cold!

I have read a lot of stuff about Dewitts and to my mind they are overrated and over-priced and, it seems, rarely fit as they claim! I'm not at all convinced that a 350 C3 in "normal" tune needs an Ally rad, and based on my experience, which has included running in 37 degree C heat at motorway speeds, followed by crawling through small towns and villages, a decent copper rad is fine.

By the way, I also bought new inlet and outlet pipes for the auto trans cooling pipes as there was no way the old ones were coming out of the rad I was replacing. Well worth the money! I think mine came from Corvette Central, but Corvette Kingdom will no doubt have them.



Last edited by kentvette on Fri 01 Feb 19 11:52; edited 1 time in total. [2 %]
--------------------
Stephen J Irons
CCCUK Lifetime Member
Corvette Club France
Corvettes of Southern California
NCM Family Member
Stephen & June's Web Site
Red Corvettes Have More Fun!

Apple IS Genisys!
The "Born-Again Greenies" are killing the planet! It's time to wake up and smell the rain-forest burning!

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roscobbc

Committee Member

Fri 01 Feb 19 12:51

Re: Radiator options?


Your options for radiators on C3's are far more 'open' if the car is small block powered. Big block cars can be marginal in terms of cooling, especially on summer days.
Irrespective of whether its a small or big block there are are other areas than radiator that need attention. Water pump. Is this functioning correctly - if a OEM unit with metal impeller it can suffer from erosion to the vanes from water cavitation if used without anti freeze. Radiator shroud and 'sealing'. Rubber and foam sealing strips around radiator and between underside of hood and front radiator mount must be in place for it to cool adequately. Ignition timing should be checked - too retarded and it may overheat.
I bought a DeWitts alloy radiator for my '68 BB. This is physically the same size as a '67 C2 BB rad - it fitted and keeps my 570 bhp stroker engine cool (in relative terms) on the hottest days. 50/50 'old school' glycol antifreeze mix with distilled/de-ionised water and a couple of bottles of Redline water wetter can be added. Paid 500 for my rad 7/8 years ago direct from DeWitts.


--------------------
CCCUK Chairman
'68 coupe - 4 speed - 3.08 - 489 cu in - 570 bhp @ 5850 rpm - 606 ft/lbs torque (821 Newton Metres) @ 3850 rpm
Image

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kentvette

Club Member

Fri 01 Feb 19 14:56

Re: Radiator options?


Ross is right about the "other" cooling items. I was lucky to have a new water pump fitted only a few weeks after I bought the car - courtesy of Tom Falconer's warranty! And, our '78 is complete with all its fan shielding and the original fan. Too many people remove the fan shroud for some inexplicable reason. I'm also no fan (no pun intended!) of electric fans on "stock" cars, well SB's at least.

My comments were Small Block related really, I'm aware that BBs are a bit tricky unless everything is working well and even then can be temperamental! Just one reason why one has never appealed Very Happy


--------------------
Stephen J Irons
CCCUK Lifetime Member
Corvette Club France
Corvettes of Southern California
NCM Family Member
Stephen & June's Web Site
Red Corvettes Have More Fun!

Apple IS Genisys!
The "Born-Again Greenies" are killing the planet! It's time to wake up and smell the rain-forest burning!

Reply with quote

Nosheruk

Club Member

Sat 02 Feb 19 20:38

Re: Radiator options?


Massive thanks for all the detailed replys.

Regards

Norman


--------------------
Corvette C3 L82 pace car, number 1117
Membership number 5195

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