RV Ratings Go to Main Page RV mechanic on duty. Start at the home page.
RV Mechanic RV engine problems? RV mechanic help only a click away!

Gm 350 vs. 454

Home > Discussion Forum > Mechanic's Corner - Engines

Email Author email Dan Rochon  Reply to Message reply to message  Post New Message post new message      search forums
hidden layer
ATTENTION: All Postings that advertise items for sale will be deleted from the Discussion Forum. You may post sale items for free in the Classifieds section. Sign up now.
All Messages in ThreadAuthorDate
Gm 350 vs. 454 Dan Rochon 2-17-02  
I am looking to buy a 26' Class C motorhome (1984). It as only 40,000 miles. It as a 350 for motor and i am wondering if it's strong enough to go up hill pulling a 2000pds boat.Any opinion ? Is there a very big difference vs. 454. Would i get bettter milleage with a 350 or with a 454. Tks
Re: Gm 350 vs. 454 Tucker Motorsports 8-3-04  
Probubly your cheapest, quickest, and maybe best solution would be to go with a 'GEAR-VENDORS' over/under drive. Give them a call at 1-800-999-9555. The gear splitter allowes you to downshift or upshift using half gears. I'm not a vendor of Gear Vendors, just a confirmed user. I use them in my rase cars. Good luck...David
Re: Gm 350 vs. 454 Bob 2-17-02  
Depends on gearing, I had 350 in a 73 22 class A and had no probs. And depends what kind of hills,but 454 would have an advantage. Pulling a lot of hills,make sure of trans cooler, and or oil coolers.
I am looking to buy a 26' Class C motorhome (1984). It as only 40,000 miles. It as a 350 for motor and i am wondering if it's strong enough to go up hill pulling a 2000pds boat.Any opinion ? Is there a very big difference vs. 454. Would i get bettter milleage with a 350 or with a 454. Tks
Re: Gm 350 vs. 454 Harry 2-18-02  
I have a 34 ft. Bounder with a 454 in it that I tow a Chevy, Cavilier with and it handles the hill very well. I owned a 25 ft. class C with a Chevy 400 before the Bounder and I like the 454 much better.The 454 is much better on the hills and my gas milage is even slightly better. I also had a vapor locking problem with the 400 which I no longer have with the 454. I am looking to buy a 26' Class C motorhome (1984). It as only 40,000 miles. It as a 350 for motor and i am wondering if it's strong enough to go up hill pulling a 2000pds boat.Any opinion ? Is there a very big difference vs. 454. Would i get bettter milleage with a 350 or with a 454. Tks
Re: Gm 350 vs. 454 RobertJ 2-17-02  
If you're thinking of pulling anything at all you really need the torque that the 454 is going to offer over the 350. Myself, I wouldn't own a vehicle that large with a SBC as they just don't have the torque required for a motorhome application. No matter how close they seem in HP, the torque makes all the difference. I pull a 3200 pound Jeep behind my 34' Class A with a fuel injected 454 and sometimes I wish I had more. Gas milage will not be noticably different with the 454 vs 350 due to the fact that the 350 will be completly overworked when pulling a trailor. In fact, often the larger motor will get BETTER gas milage. Save yourself the headache and look for a used motorhome with a larger motor.

Depends on gearing, I had 350 in a 73 22 class A and had no probs. And depends what kind of hills,but 454 would have an advantage. Pulling a lot of hills,make sure of trans cooler, and or oil coolers.
I am looking to buy a 26' Class C motorhome (1984). It as only 40,000 miles. It as a 350 for motor and i am wondering if it's strong enough to go up hill pulling a 2000pds boat.Any opinion ? Is there a very big difference vs. 454. Would i get bettter milleage with a 350 or with a 454. Tks
Required fields in red
For more info about a field, place your mouse over the More Info icon.
Subject:
Your Name:
Your Email:
Message:



Code is case-sensitive. Helps stop SPAM.
       

Google
Web RVMechanic.com



Watch me paint, sculpt and buy my art


Useful Links
Recent RV mechanic and troubleshooting topics
  86 toyota dolphin, when tran's temp light comes on o/d shuts off, is this normal and how do I fix it?
  Propane Tanks
  Onan Generator
  1997 Itasca Gear Lockup
  DC power only when connected to shore power
  Camper trailer wire diagram
  P30 Chevy Hydroboost
  Replacing the heads on a 1992 Winnebago Elante 33
  1985 E350 460 meltdown
  1976 Dodge Midas Mini
  Dip Stick Blows Out of Koler Generator
  Heat stips in a Duo Therm Brisk Air AC unit
  GENERATOR BATTERY CUTOFF SWITCH
  1984 chev with carb cough
  Re: norcold refrigerator
  VIEW ALL

RV-Coach Online

My RV Guide

All Things RV




Print-friendly page
PRIVACY POLICY  |  TERMS & CONDITIONS  |  © 1996 - 2008 RV-Coach Network - All Rights Reserved  |  Web Site by ITtelligent