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Old 08-23-2001, 03:15 PM   #1 (permalink)
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Post Radiator for 350 ?

My stock FJ40 radiator just isn't cooling my 350 worth a damn.

I saw a thread a couple months ago about what radiators folks were using in their cruisers with 350-v8 conversions, but I wasn't looking to replace my radiator then. Now I am, and the thread is gone.

Where can I get a good radiator and what's a good size, and (last question) how did you mount it in your engine compartment (did it just bolt right in, or did you have to fab up a mount).

Probably get a new fan while I'm at it - I don't like my cheapo electric fan.

Thanks!
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Old 08-23-2001, 03:58 PM   #2 (permalink)
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I had the same problem. However, I originally fixed it by converting my original radiator to a (5) core. That worked well. Now I run (3) core aluminum cross flow GRIFFIN. It runs 185-205deg. DAREN
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Old 08-23-2001, 04:02 PM   #3 (permalink)
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I've looked at the aluminum Griffins. What size is your radiator and how did you mount it in your cruiser?
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Old 08-23-2001, 04:27 PM   #4 (permalink)
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don't know if chad is still making them, but redwood radiator made a four core with dimpled tubes that cooled some pretty hot running v8's, including bruce lutz's.

floyd bufkin in colorado, swears by a griffin and a black magic electric for this v8. said the griffin he got fits in the stock mount.
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Old 08-24-2001, 08:34 PM   #5 (permalink)
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My rad is stock top and bottom tanks with 5 core never had a problem even running for 4 hrs in the heat going to moab (105 deg) Almost any shop can do it. Mine only cost $225.
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Old 08-24-2001, 08:54 PM   #6 (permalink)
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I also used one of Chad's 4 cores with the dimpled tubes. Lowered and moved my radiator mounts to the drivers side about an inch to get the fan closer to center on the radiator. Used a Steward stage one water pump, that pumps about 30% more than stock. For a fan I used a 7 blade off a Cadillac hooked to a K-5 Blazer fan clutch. Thermostat was also a Steward 180 deg. drilled for flow. So far the engine has never gone above 185 degrees.
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Old 08-24-2001, 09:01 PM   #7 (permalink)
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I use aa 2 row with 1" tubes from Ron Davis...no issue's here unless you run your 350 greater then 15 degree's advance...then it overheats other wise select the thermo and add 7 to 10 and your done....180 baby...at 110...
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Old 08-24-2001, 11:21 PM   #8 (permalink)
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Quote:
Originally posted by Junkyard:
<STRONG>I've looked at the aluminum Griffins. What size is your radiator and how did you mount it in your cruiser?</STRONG>
I recently purchased from summit the 26" x 19" (GRI-1-25222-x) and got a set of brackets from Arndog on this section. The brackets were easy to install and the rad fit without any inner headlight bezel trimming. my average temps on the road 180. Average temps wheelin 190-195. Griffies are the way to go and for the price of a 182 bucks, you can't beat it.

[ 08-25-2001: Message edited by: Sixgun ]
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Old 08-24-2001, 11:28 PM   #9 (permalink)
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Is the radiator the problem, or is it the cooling *system* as a whole?
Fan too far away from the radiator, poor shrouding, blocked airflow, etc. are all common problems...

Not that getting a new radiator won't help, but maybe a close look at the system as a whole with some changes there can solve the problem without the expense of a custom radiator.
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Old 08-25-2001, 09:28 AM   #10 (permalink)
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Yup, gotta agree.. Griffin radiator are the way to go. I have wheeled in 110 degree temps during labor day and my FJ40 with a 350 TBI motor never got above 220 degrees.

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