radiator
Thread Starter
Burning Brakes
Joined: Aug 2005
Posts: 801
Likes: 1
radiator
Thinking of swapping out my sb for a big block.I just pit in a new support and dewitts sb radiator a year ago.From what I can tell they hay have the same size core.Anybody running a big block with sb radiator and what kind of hoses are you using.
Le Mans Master
Joined: Jan 2006
Posts: 6,504
Likes: 139
From: Butler Pa
I'm running a zz502 with the stock '69 copper/brass small block radiator. If I recall correctly, I think I used the small block hoses. Had to shorten the bottom one a couple inches because the big block is longer and the water pump is closer to the radiator.
Thread Starter
Burning Brakes
Joined: Aug 2005
Posts: 801
Likes: 1
I may try it.I emailed dewitts and they have a big block radiator that fits a small block support but I hate to buy another one at 900 bucks and still have to play with the hoses.The one I have now cools my car with ac on very well.Idle for thirty minutes in the driveway with ac on.Never gets over 180.
Le Mans Master
Joined: Jan 2006
Posts: 6,504
Likes: 139
From: Butler Pa
I may try it.I emailed dewitts and they have a big block radiator that fits a small block support but I hate to buy another one at 900 bucks and still have to play with the hoses.The one I have now cools my car with ac on very well.Idle for thirty minutes in the driveway with ac on.Never gets over 180.
Anyway, my 502 has a 180 T-stat and only once has ever gotten any hotter. I was in heavy traffic once on a 95 degree day and it went up to 190. But i don't have AC.
Former Vendor
Joined: Jan 2000
Posts: 5,593
Likes: 631
From: Brighton
I may try it.I emailed dewitts and they have a big block radiator that fits a small block support but I hate to buy another one at 900 bucks and still have to play with the hoses.The one I have now cools my car with ac on very well.Idle for thirty minutes in the driveway with ac on.Never gets over 180.
Instructor
Joined: Jan 2012
Posts: 156
Likes: 0
From: Mount Sinai New York
I think it also has to do with the level of performance. I'm running a high compression bored and decked 355 with Brodix heads and a Lunati Voodoo cam. With an electric water pump and dual electric fans, I'm running just north of 200, and the weather hasn't even turned hot yet. Members on the forum have told me that the Dewitt's is the only way to go. And judging by some of the testimonials, I tend to agree. $900 bucks doesn't seem too bad when your looking at the level of protection for your investment.
Le Mans Master
Joined: Jan 2006
Posts: 6,504
Likes: 139
From: Butler Pa
I think it also has to do with the level of performance. I'm running a high compression bored and decked 355 with Brodix heads and a Lunati Voodoo cam. With an electric water pump and dual electric fans, I'm running just north of 200, and the weather hasn't even turned hot yet.
If my copper small block radiator cools my 502 (actually it's a 509), why wouldn't it cool your 355?
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