I'm new at this so maybe I'm needlessly worried but. . .Our 98 Tropi-Cal 33 footer is 460 powered. It burns no oil and the engine and tranny are in good shape but going up a relatively steep hill it downshifts and screams loudly, or maybe it's just that I'm not used to sitting next to the doghouse. My question: Does anyone have experience towing with a 460? Can I do so as long as I don't exceed the design specs? The thing is already slow as heck climbing a decent grade . . . .

What you are experiencing is what's call the "460 roar." The transmission intercooler kicks in when the engine temp goes up under load, and between the mechanical and turbo noise, it can startle you even after you think you're ready for it. The good news is I can watch the engine temp go down almost immediately after the intercooler kicks in. One piece of advice: if you're towing in hot weather, give the engine a chance to cool down some before you shut down the engine, otherwise the exhaust manifolds might tend to warp and spit bolt caps off. Happened to me, and I had to replace both the right manifold and the bolt set (and Ford gets $112 for a set of manifold bolts (really)). Hope this helps,

I think any 460 or 454 will do well with the addition of headers, FF muffler and a CAI. Both run hot and have a tendency to crack exhaust manifolds especially when pulling long hills with a tow on a hot day. Headers will not only give you about 80 more HP for pulling hills but reduce the heat generated and reduce the constant downshifting and fan clucth noise you have now. Also you can add another layer of insulation to the inside of the doghouse to reduce the noise and heat. These mods all helped me with my older 454. Also look at your towing capacity for your MH it is probably 5000 lbs, but a lighter car would be better something under 3000 lbs. Does the MH run hot now on hills without a tow?

Gjac wrote:I think any 460 or 454 will do well with the addition of headers, FF muffler and a CAI. Both run hot and have a tendency to crack exhaust manifolds especially when pulling long hills with a tow on a hot day. Headers will not only give you about 80 more HP for pulling hills but reduce the heat generated and reduce the constant downshifting and fan clucth noise you have now. Also you can add another layer of insulation to the inside of the doghouse to reduce the noise and heat. These mods all helped me with my older 454. Also look at your towing capacity for your MH it is probably 5000 lbs, but a lighter car would be better something under 3000 lbs. Does the MH run hot now on hills without a tow?Temp goes up some but as yet not hot. Really haven't stressed it too much though. Whose headers do you recommend?

Yankee Clipper wrote:What you are experiencing is what's call the "460 roar." The transmission intercooler kicks in when the engine temp goes up under load, and between the mechanical and turbo noise, it can startle you even after you think you're ready for it. The good news is I can watch the engine temp go down almost immediately after the intercooler kicks in. One piece of advice: if you're towing in hot weather, give the engine a chance to cool down some before you shut down the engine, otherwise the exhaust manifolds might tend to warp and spit bolt caps off. Happened to me, and I had to replace both the right manifold and the bolt set (and Ford gets $112 for a set of manifold bolts (really)). Hope this helps,Appreciate the tips. Thanks!

I had a 460 for 11 years but not on a coach that big. Yes they are noisy and adding insulation to the dog house is a subject that comes up often. You also must make sure the dog house is seated properly. A tiny space will let a tremendous amount of noise and heat inside. I believe I did some 1st gear pulling in some of the tall hills in Calif. Highly unlikely you have a turbo. There are aftermarket kits available to help boost the power.

Towing With A 460 Ford | Good Sam Community

Dutch_12078
Explorer II
Jun 19, 2018
One key to keeping a 460's OEM exhaust manifolds happy is to never shut the engine down immediately after a long, hot run. Allow it to run at idle or slow speeds for 5-10 minutes to gradually bring the temperature down before shutting the engine off.
tommy_g
Explorer
Jun 20, 2018
I have the same engine as you. Just short of her 19th birthday, I rewarded her with a Banks Power Pack. It helps up the hills and getting off the mark. I still like to hear the fan cut in though. It makes the temp drop real fast. As someone said, coming down the hills can be a knuckle binder.
TropicalRV
Explorer
Jul 01, 2018
I had a 97 32 ft Bounder with the 460 and towed my Toyota Corolla from Connecticut to Kalispell, Montana then down through Wyoming and Colorado. I had no problems. This is a very durable engine, but doesn't breath very well due to the intake and exhaust passages. As others have said, a Banks system will breath a lot of life into this, if you really feel the need and have an extra $3000 laying around. Otherwise, treat it gently and take your time. You'll get there. BTW, no more than every three years, have the whole brake system flushed and replaced with new fluid. Brake fluid is hydroscopic and absorbs water from the air. If enough water is in the brake fluid, it will boil when using the brakes hard and you will lose them.

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