Team Camaro Tech banner

1 - 20 of 28 Posts

·
Registered
Joined
·
79 Posts
Discussion Starter · #1 ·
Ok, I am looking at replacing my radiator with an alum. version for better cooling. Does anyone know off hand what the dimensions of a '67 radiator are and any recommendations?
 

·
Registered
Joined
·
492 Posts
The debate of alum vs copper will rage on. Dimensions on small bock should be 21 inch bb is 23 inch (at least on a 69). Are you looking for electric fan setup, or running mech fan? Are u having cooling problems?
 

·
Registered
Joined
·
2,864 Posts
If the alum rad is the same size as the copper/brass that you are replacing, don't expect any real benefits unless your copper/brass is in need of a clean.
A weight saving is the only real saving of alum. Very few fabricated alum radiators fit supports or shrouds as well as copper/brass with OE tanks.
 

·
Registered
Joined
·
79 Posts
Discussion Starter · #5 ·
Ok, let me add this. 1. I have a small block in my '67 camaro w/ an auto trans. 2. I am planning on a high volume water pump - alum. also. 3. I was under the assumption that an alum. radiator would disperse heat better and help w/ the cooling - Am I wrong? Really not trying to stir up controversy just want to be able to cruise Woodward or any other small town parade and not overe heat. yes, I have checked the thermostate and that is good, belts are good, new alternator- 70 amp. I grant you the alternator has nothing to do with cooling. Just needed to replace it so I got a 70 amp unit.
 

·
Registered
Joined
·
13,315 Posts
3. I was under the assumption that an alum. radiator would disperse heat better and help w/ the cooling - Am I wrong?
Well Im not so sure....brass is a dam good conductor of heat and so is Aluminum
The brass radiator is way over built that it requires a restiction to run properly.
Check the xmas link my sig it you want to know about slow cruising ...doesnt go over 165 deg...and xmas here is in middle of summer...and no hi vol pump either.

Difference between...Well at the end of the day its sort of like asking if a kenworth or Mac truck would be best for towing a car transporter trailer...

With the brass , clutch fan , shroud, clean cores its simple to setup
The Al electric fans etc lots of posts here for when you run into problems.
And the timing at bottom end rpms is not over advanced or retarded...or the carb too lean


want to be able to cruise Woodward or any other small town parade and not overe heat.
So do you have a problem now?
or do you thing you MAY have a problem?
And If you thing you MAY have a problem, would it not be better to establish if you actual'y do have a problem?
THEN sort it out?....most proberly by getting the header tanks pulled on the radiator and cores cleaned.....make sure have the right shroud...new bottom hose, and the clutch is not sloppy on the bearings

Also check that at the rpms that u intend to cruise with, there is enough water flowing ...look inside the radiator at the flow and check against the rpms.
A simple pully size may do the trick.
 

·
Registered
Joined
·
2,554 Posts
Alumitech aluminum radiators look like the original and claim 30% improvement in cooling over stock 4 core the same size. They also have tabs that will hold your lower shroud in place as an option at no extra cost. They aren't cheap but they look great and have an excellent reputation for quality, service and cooling. I bought one for mine and it's in but not yet driven as the cars is still in the restoration process.
 

·
Premium Member
Joined
·
1,465 Posts
I use a becool in a 67 sbc. The radiator is a big block application. Fits perfect with no mods. Also went with the dual fan set up. I can get the part # if you need it.
 

·
Registered
Joined
·
79 Posts
Discussion Starter · #9 ·
Steptoe-So do you have a problem now? When I cruise the temp goes up to overheating so yes, in the summeer there is a problem.
or do you thing you MAY have a problem?see above
And If you thing you MAY have a problem, would it not be better to establish if you actual'y do have a problem? See #1
THEN sort it out?....most proberly by getting the header tanks pulled on the radiator and cores cleaned.....make sure have the right shroud...new bottom hose, and the clutch is not sloppy on the bearings- Also, realize the car has no heater for interior or defroster.
So, what radiator do you use, do you have any problems?
 

·
Registered
Joined
·
79 Posts
Discussion Starter · #11 ·
thanks, Steve - I may do more research and go to the Alumitech site to get more info. I had assumed when I posted this it would be a simple question amd a simple answer. Obviously not-LOL! Still learning.
 

·
Registered
Joined
·
79 Posts
Discussion Starter · #12 ·
Steps- Ok, I viewed your Camaro pulling the sleigh and the Jeepster( ok, Jeepster type vehicle) Great looking Camaro. What are you using for radiator? small block?
Thanks in advance
 

·
Registered
Joined
·
492 Posts
I agree with what steptoe has said in a different thread. Stock is a good set up or gm would never have used it. I was on the new bigger, badder radiator banwagon this summer. My car would get superhot when i sat in traffic. I ordered a new becool factory fit black alum rad for $699. I returned it after a bought a different fan spacer for $11.99 at oreilys. Problem fixed. Gm spent alot of money devolping a system that worked in 67-69. I dont think it just quit working. If alum rad is what u want then id buy one. But if alum is what your buying to fix a problem id just make sure you try everything else first.
 

·
Registered
Joined
·
79 Posts
Discussion Starter · #17 ·
MTN 10- Ok, assuming I have no plug or restrictions in my radiator hoses, thermostat works, everything seems to check out. No noise - bearing in the water pump, I don't know what else to check. Only possiblility I can think of is that the radiator was not meant for this specific motor when I bought it, I bought the cart used and have no idea as to originality of the motor. Can it be a 6 cylinder vs. sm. block , vs a big block all have different radiators? If that is the case , how would I check I have the correct size? for my small block 350 cu. in. ?
 

·
Registered
Joined
·
2,864 Posts
If you have heating issues while cruising, it does sound like a capacity issue, but "cruising" is not loading up your cooling system where a small radiator is going make a difference.
It does sound like your radiator's cores may be in need of a good clean.
When the engine is hot, can you feel any cold spots on the core indicating blocked tubes?

I'd pull the tanks and get it cleaned anyway. Then you know you've covered that base.
 

·
Registered
Joined
·
492 Posts
Core on sb rad is just over 20.5 inches wide. Core on bb is about 2 inches wider. Im not saying you dont need a new radiator, u may? I learned recently that a car is kept cool bye a cooling "system" not just a rad. I would do this first before spending $$$ on new rad. Then at least if it doesnt work out you have all new system once u purchase alum set up if u go that way. Make sure timing is right. That could mess up temp.
1)fush rad with water (make sure its clean)
2)new thermistat 180 $6 bucks
3)then i would start the car and let it get up to temp then i would get a leaf blower and turn it on full blast from engine side of rad. Have someone watch the temp gauge, if car cools down from over heat temp then its an airflow problem not radiator.
Fork in the rd now:if car cools down with blower then check fan setup. Make sure fan is half in and half out of shroud, too far in or out will not get enough air. If your running clutch fan it may be time for new clutch $50 bucks. The clutches loose effitancy as time goes on they wear out. Run at least 17 to 18 mechanical fan. My issue was fan to far in shroud. Moved it out and it dropped 15 degrees. Back to fork in the rd. If pushing all the air through the fan with blower doesnt. Cool it down then it may be time to pony up some cash. The be cool item number 12009 is a nice cheap(by be cool prices) set up.
 

·
Premium Member
Joined
·
1,465 Posts
Bill just go to summit racing and look under becool. Look at the foot notes it will say the dimensions/ what applications it is for. You can even look in a resto parts cat and they also give applications. Only use my advise if you think you need a new radiator. I think you should start with what Steve has suggested first. Does your car only get hot when cruising down town or while your catching the wind. (or both) MTN10 has a good point also
 
1 - 20 of 28 Posts
Top