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Calculation for sizing a big block radiator?

70_Fastback

70_Fastback

Hell Bent for Speed
I need a radiator for my rat truck's 460. And I have dimensional requirements as well. I need to be no wider than 21.75". Height is not really an issue though. I need to be able to fit between my front frame rails and within the grill shell. I would LIKE to have a top/center fill.

Getting off track.....sorry; is there an area or volume calculation that coincides with a certain cubic inch?

Anyway, I have found these on Speedway:
9175159_L.jpg


Link:
http://www.speedwaymotors.com/Universal ... ,7316.html

OR I could go with one that does not have an integral filler & requires an in-line fill coupler

Link:
http://www.speedwaymotors.com/Universal ... layId=7316

Both are the same dimensionally:

*19-3/4" wide
*27" tall to the top of the tank
*28" tall overall (from the bottom to the top of the filler neck)
*2-1/4" thick
*Top neck is 1-1/2" O.D.
*Lower neck is 1-3/4" O.D.
*Trans Cooler ports: 5/16" inverted flare
*Core measures 18" wide x 22-1/4" tall
*2 rows of 1" tubes


And keep in mind I am totally open on the front end, so I will be getting greater air flow, but also direct sunlight. Those 2 i issues may mitigate each other...? Any other big blockers have some words of wisdom?
 
Short Answer: There is no formula to determine radiator size based strictly on cubic inch displacement of the motor. You need to know how many BTU's worth of hot water the motor puts out, then you can figure from there. And good luck figuring that out...

Long Answer: http://www.clubhotrod.com/forums/showthread.php?t=30523

Best Answer: Biggest radiator that fits in the space = best chance of not overheating. :hs

Maybe call GRIFFIN and ask their recommendation? :shrug

Sorry, I can't be more help...
 
Actually Griffin's site yields this:

Engine: V8
Horse Power: up to 600
Outlets: Passenger Top/Driver Bottom
Rows: 2
Core Size: 19.25 x 26.12 x 2.68
Click to expand...

The core size of the one I posted is a bit smaller....
 
Height and width are pretty close. The thickness is a bit different - I'd bet the Griffin has 2 rows of 1.25" tubes instead of 1".
 
Actually Griffin's site yields this:

Quote

Engine: V8
Horse Power: up to 600
Outlets: Passenger Top/Driver Bottom
Rows: 2
Core Size: 19.25 x 26.12 x 2.68


The core size of the one I posted is a bit smaller....
Click to expand...

I guess you'll just have to drop your horsepower...
 
J, when I bought my 67, the P/O had a 460 in it. It still had the 2 row radiator with a push electric fan and the mechanical fan. I asked the guy if it ran hot and he said no. He said it stayed at around 190. For what's that's worth.
 
I am actually corresponding with Griffin right now via email. I can get a custom outlet one - the largest one for $230. cheaper than advertised on their site...?

I am measuring this evening and going to order it. They also confirmed that it is acceptable for a 460 cubic inch engine.
 
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