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 > 1998 Class A - Chevy chassis and 454 - yay or nay?

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bighatnohorse

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Posted: 01/13/18 10:18am Link  |  Quote  |  Print  |  Notify Moderator

Is the Chevy class A chassis with the 454 gasser equal to the Ford class a with a V10?
Does it have a "reputation" for good, bad, or eh ?


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enblethen

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Posted: 01/13/18 10:21am Link  |  Quote  |  Print  |  Notify Moderator

The Chev 7.4 is superior to the V-10. It should get better mileage have more power at lower RPMs then the V-10. This should be Workhorse chassis. Was some issues with brakes.
Verify which transmission connected to 7.4.


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mike brez

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Posted: 01/13/18 12:43pm Link  |  Quote  |  Print  |  Notify Moderator

If it's on a P30 chassis run.


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MrWizard

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Posted: 01/13/18 01:16pm Link  |  Quote  |  Print  |  Notify Moderator

my opinion

the 454 is over square, bore bigger than stroke
its high reving , hard on starters and hard on the trans that is usually installed from the factory

ive had (2) Rvs with the 454 on a p30 chassis, on both i to replace starters, and rebuild trannys,
but i will admit, my dp cost me more in repairs than the chevys ever did combined

i recently bought a 97 Bounder on Ford chassis with the 460
and will be selling the DP


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RLS7201

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Posted: 01/13/18 01:17pm Link  |  Quote  |  Print  |  Notify Moderator

1998 is a Chevy P32 chassis, NOT a Workhorse chassis. Good engine and transmission. 290 HP, port injected. Good low end torque. Good brakes. The independent front suspension is problematic. Air bags in front coil springs, leave room for improvement. Bell Crank on steering was sloppy when new. Robert Henderson at Henderson Line Up has all the right stuff to correct the front end failures.

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centerline

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Posted: 01/13/18 01:18pm Link  |  Quote  |  Print  |  Notify Moderator

I agree that the GM 454 is far superior to the Ford v10, as for the chassis itself, I had a p30 chassis for ten years without any problems, other than right side manifiold cracking problem.... which is easily solved by installing a splash skirt so the water doesnt get splashed up on it by the tire and cause it to crack....

ford had an issue with their brakes also, I think more so than gm did... the symptoms were similar, but they were different problems.
ford had internal caliper problems and had to be replaced, where gm had a problem with the calipers not wanting to equalize on the spider. and a bit of tapping with a hammer and some wd 40 would free them up again... some units that spent a lot of time setting at the coast had the most issues, but those that were traveling most of the time had no issues...

the ford V10 is a dependable motor, but it doesnt seem to have the power of the 454, and 2-3 gallons less mileage.... a very inefficient engine. the ford 460 is good and fully stock it delivers a bit better performance than the 454, but the fuel economy still is less than the 454...

dont expect many miles per gallon from a 454, but it is a good engine and it offers the best economy for normal diving conditions.


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moisheh

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Posted: 01/13/18 01:32pm Link  |  Quote  |  Print  |  Notify Moderator

Nothing wrong with a 454, But the Chevy chassis is the worst RV chassis ever made. The front end is weak: control arm bushings, ball joints, bad coil springs bell cranks are all really weak. Needs lost of other anti sway and anti wonder mods. Can cost up to $4000. And then we have that amazing auto park brake. It can lock up at highway speeds and end up in over $2500 in damages.Parts for that system are hard to find and expensive . Work around upgrades are available but around $2000 installed . Parts are not available at GM dealers and Workhorse is out of business.

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Posted: 01/13/18 11:26pm Link  |  Quote  |  Print  |  Notify Moderator

I personally don't understand all the hatred against the P30/P32 chassis, I have one on my 28 ft 2002 Safari Trek, though mine has the wide track front end and the 8.1L Vortec engine, along with a number of suspension upgrades thanks mostly to the previous owner. Just to clarify the whole Workhorse/Chevy thing, Workhorse bought the Chevy P30/P32 production line in 1999, they continued production of the P series chassis until about 2005, and introduced their own W series chassis in about 2003.

Sure the P series chassis had some weakness, but many of those are fixable with a few aftermarket parts, like Super Steer Bell cranks, and front springs, along with a Track bar, and a few other things and you are mostly good to go, as long as it does not have too big of a house riding on it. The big issue with the P series was it was not heavy duty enough to handle larger gas coaches once slides started becoming popular.

As to parts there are a handful that can only be found in junk yards, but given the fact thousands upon thousands of these were made there should be an ample supply for many years, but the vast majority of parts are still available either as new, rebuilt, or improved aftermarket designs.

mike brez

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Posted: 01/16/18 07:08am Link  |  Quote  |  Print  |  Notify Moderator

They were ment to be potato chip delivery trucks not fifteen foot extensions welded on to make a rv. I did everything to mine over the years I had it... Henderson bell cranks,springs,tear trac bar,larger ipd front sway bar with poly bushings in front and rear,idler arm,relay rod,steering dampener,steer safe,inner and outer tie rods,Koni shocks all around,Goodyear tires then Hankook tires. It's been a few years and probably missed something but after all this it was still a POS.

Blutoyz

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Posted: 01/16/18 08:13am Link  |  Quote  |  Print  |  Notify Moderator

I am a newb but made one 1800 mile trip in my 97' adventurer34 with the L29 454. It ran like a top and was relatively smooth for what it is.

I can say that I never expected a giant rolling box to handle that well so my expectations weren't high but only in 40-50 knot gusts one morning was I "white-knuckled"


She may be old but she is paid for (the rig that is)


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