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Old 11-08-2014, 11:57 AM   #29
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Our '94 Brave 454 (32') has no trouble with the Western NC (Black Mountain) area. We go from Florida to Hendersonville and points West at least 8 times a year. Sometimes via I-26, sometimes I-40. We don't pull a toad, but sometimes trailer a small boat or a couple of motorcycles, so the MH takes us everywhere we want to go.

Plan ahead, leave some water behind and don't rely only on the brakes downhill.

You'll still be passing a few 18 wheelers uphill.
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Old 11-08-2014, 12:16 PM   #30
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Quote:
Originally Posted by ErikDaPirate View Post
I have a 1989 34 foot Holiday Rambler with a Chevy 454 in it. I can't really see taking this anywhere near the mountains (steep grades) or am I just being overly cautious. Has anyone here have any experience with this engine and mountains?
There were days when the 454 was the big engine. It powered dump trucks, highway trucks, etc. During that time many of the roads you are referring to were built using this engine.

You may not be going as fast as newer, more powerful engines but you will get there. Oft times not that far behind the speedsters.

Slow down, live long and enjoy the scenery.
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Old 11-08-2014, 02:45 PM   #31
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Our 1976 Allegro (26') for sure had a 454 in it - regular 2 bolt main. I know because 20 years after dad bought it, we parted it out and I ended up with the engine. I put a cam in it, ported and polished the heads, and stuffed it in a short bed chevy pickup just for fun.

As far as trannys go... the Allegro had a TH400 tranny behind the 454. I think at around 75,000 miles, the tranny pooped out on us in Alamogordo NM. About 2000 miles from home. We had a rebuilt one put in on the road, and they installed a tranny cooler.

I think that may have actually been the last trip we took in that motorhome.

-cheers
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Old 11-08-2014, 10:54 PM   #32
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Well I can tell ya that so far I have only had to drop it down into 2nd gear and I used that too maintain 30-35 mph.
A lot will depend if its in tune and running good. Try a few bottles of Lucas carb, injector cleaner Treatment.
If I know I will be going up steep grades I will use premium or octane's above 90. I have 2 tanks one is 30 gal and the other is 70 gals. I put the higher octane in the 30 gal tank. for the long pulls. I have a 82 PA w/the 454/4 barrel. Toad is a 99 deville on a KarKaddySS
This is what I do. I am never in a hurry so I don't push it.
If I start to get a line up behind me I will pull over at a safe spot to do so.
Happy Travel's, Tim
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Old 11-08-2014, 11:28 PM   #33
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Chevy 454 vs Mountains

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Originally Posted by Daveinet View Post
You could always drop a set of headers and straight through mufflers on it. Put a truck air filter on it that is taller than stock, or double stack the stock air filter.
Another trick would be to install an adjustable fuel regulator. By lowering the pressure against the needle, you can skew the mixture slightly without starving it for fuel. inlet pressure will make a small difference against the needle valve. Back when I was running the carb 454, I installed an electronic fuel pump. The higher pressure made it run rich. It would actually spray fuel out the exhaust under WOT. I installed a regulator, which brought it back down. I found I could skew it lean or rich, depending on the fuel pressure. Of course if I got it too lean, it would restrict the flow, but there was a range where it was very adjustable. If you look at the needle valve in your carb, you can see that the force of fuel against the needle pushes down on the float. It is designed for a predicted amount of pressure. Slightly more pressure will sink the floats - of course, way to much pressure will prevent it from closing. Too little pressure will result in the floats sitting slightly higher in the fuel and lean it out. You can't make big differences, but there is a range where it is adjustable.
Hold on there Daveinet we're talking MH not an AMX 401 detuned engine , SS396 or the GTO Judge...ha! We have went almost full circle with MH and now we look for more power and better MPG's. It's a quest to be home but not at home but to take our home along. I sure wish I could get the bride of 39 years into hitting the road more often but she'll never ever let go of the family for a long period of time. RVMH's are a fantastic pastime and filled with adventure after adventure and a fantastic way of life. Wis I was there at some point but I always remember...Heaven knows no fury like a woman scorned! I'm sure of that so a little time in an RVMH is better than no time at all! It must be a thrill to take your home or to ride your home up a mountain...wow! What I remember of the Chevy 454 the mountains should not be a problem just take it easy! Safe rides folks!
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