10-08-2004, 10:26 PM | #1 |
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V8 / 700r4 cooling
I'm upgrading from an I6 to a 350 and from a 3 speed to a 700r4. Can I get by with my current radiator and a big external transmission cooler? I hope not to have to shell out the $ for a new radiator. I'm in GA where it's not too hot.
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10-09-2004, 09:56 AM | #2 |
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I swapped from a 307 to 350 and the 3-speed like you did. When I bought the 700 I was told that heat and improper tv cable adjusters killed these things. So I put in a 4-core AND a huge aux cooler and run a trany temp guage. Have had it together for about 5 years or so and no problems.
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10-09-2004, 12:08 PM | #3 |
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I don't think the stock 6 popper radiator is big enough. I think they are classified as 2 core. You'll be way ahead paying for the 4 core unit. You'll probably also need to get the V8 shroud instead of the 6's top cover. If you get the 4 core it'll have the collant for your tranny built in and should handle that fine, unless your going to do some HD running or towing. You'll probably end up paying about the same for a good 4 core as you would a aftermarket tranny cooler.
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10-09-2004, 12:40 PM | #4 |
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From what could I pull a 4 core radiator that would fit? I assume that radiators haven't changed much over the years
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10-09-2004, 12:49 PM | #5 |
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Look for a truck with a V-8 and air conditioning. They will have the 4-core radiator. A new one costs around $245, so don't spend too much on a used one because you will need to have it boiled out and pressure tested before you install it in your truck. Boiling it costs around $50. It may be less money to get a new one.
I agree with Smitty, get a new 4-core radiator and a big auxiliary cooler and enjoy driving the new engine and transmission. 'Just my $0.02 .
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10-09-2004, 04:13 PM | #6 |
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Let's see, a part of Georgia that doesn't get too hot.....
My niece lives near Blue Mountain, GA. From what I saw, if it ain't the heat, it's the hills. Either one could be a strain on your cooling system.
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10-09-2004, 04:27 PM | #7 |
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I just bought a new 4 core from Autozone for my 70 GMC w/ A/C, auto. #433369 - $178.99 + tax. Radiators.com is a bit cheaper but you have to pay shipping, and in my mind they have an unproven product, as I've bought several autozone radiators and have no problems with them.
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10-09-2004, 06:30 PM | #8 |
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to be on the safe side i'd go for the 4core plus an auxillary tranny cooler also. that's what i did with my 2004r
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10-09-2004, 08:15 PM | #9 |
Watch out for your cornhole !
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I've run V8 swaps through the old 6 cylinder radiator here in Texas heat before with no problem.
Radiator.com is your friend if you must buy new. My big 4 core for my 454 truck was 150 bucks delivered.
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10-09-2004, 10:58 PM | #10 |
its all about the +6 inches
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There were plenty of heavy cars, and trucks, with big v-8 motors and 2 row radiators.
Personally, i would get an inexpensive tranny cooler, and place it right on the back side of the grill, and then drive it with the old rad and cheap cooler. If it overheats, then you know what you need to do. if it don't, then go get a quality cooler...and you can get good coolers for way less than 245 bucks. |
10-09-2004, 11:18 PM | #11 |
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Seems there are really two issues here:
1) Will an external cooler alone keep a 700r4 cool? 2) Will the lil' 6cyl radiator keep a 350 cool? As to #2, I like Longhorn Man's suggestion - try it and see. I guess that way if the engine is running hot I can swap radiators and then have the benefit of the cheep cooler. But to issue #1, will I know if the tranny is getting to hot? |
10-10-2004, 12:26 AM | #12 |
its all about the +6 inches
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Location: Hilliard Ohio
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A tranny cooler alone will keep it cooler than a rad tranny cooler.
The one inside a rad will mainrtian the tranny temp at 190 - 200 degrees...which most every rebuilder will tell you is too hot. |
10-10-2004, 01:27 AM | #13 | |
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Quote:
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10-10-2004, 09:29 AM | #14 |
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Seems 4 core rads are closer to $190 than $90 around here :-(
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10-10-2004, 12:31 PM | #15 |
Watch out for your cornhole !
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Radiator.com
150 bucks for a 4 core delivered next day in the United States
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