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| | | | Joined: May 2015 Posts: 15 'Bolter | | 'Bolter Joined: May 2015 Posts: 15 | Hi, is the original Radiator from my 49 3100 truck big enough for the 350ci engine that i have put in? My idea is to cool the TH350 transmisson wiht a second Radiator.
thanks Ray | | | | | Joined: Feb 2004 Posts: 29,792 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,792 | The problem will not be the cooling capacity, which might be adequate. The original radiator will only be rated for approximately 4 to possibly 7 PSI of pressure, and the 350 functions best at around 15-18 PSI. V8's with thin wall castings in the cylinder wall area have a tendency to spike temperatures and produce pressure surges that might cause the radiator to burst even if the complete system does not overheat.
I would recommend getting a modern reproduction radiator with a proper pressure rating that will bolt into the original mounting points on the vehicle. It can also be specified to include a transmission cooler. They are not terribly expensive, but I'm not sure what the shipping cost would be to Europe.
Jerry
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| | | | | Joined: Jun 2009 Posts: 1,596 'Bolter | | 'Bolter Joined: Jun 2009 Posts: 1,596 | It will probably be fine for a while. You should make sure your current radiator is clean and free of obstructions, though. For the investment, aluminum radiators are well worth it.
You just need a small transmission cooler for your TH350. I usually put mine off to the side in the grille cavity, so it doesn't block the air to the radiator. | | | | | Joined: Dec 2001 Posts: 14,522 Moderator: Welcome Centre, Southern Bolters, Legion Hall | | Moderator: Welcome Centre, Southern Bolters, Legion Hall Joined: Dec 2001 Posts: 14,522 |
...using your original may be fine if the engine is not sitting low in the frame making the fan "low" to the radiator. Also, if using your original I'd suggest a fan shroud depending on the climate where you live.
However, Save yourself future problems. Buy and after market that will bolt right in and also have the tranny cooler in the bottom. Do it once...do it right. You'll be glad you did.
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