
- #56 411685 HOSE—vent, valve to carburetor
I also need to connect
- #31 385204 GROMMET—filter to valve cover
- #32 403192 FILTER ASSY.—ventilation, crankcase (prior to 1978)



I did, it is a Powermaster brand, and got it on eBay about 5yrs ago. Sounds different than stock starter. It has worked perfect since first installed. Much lighter and easier to handle. IIRC price was around $150 at the time.Has anyone installed a small high torque gear reduction starter motor? I wonder if they even make one......
I just used fuel line hose, and when that ages out I'll probably replace it with silicone hose.View attachment 17854
Is there a specific hose to replace this when it becomes brittle, or can a generic hose of proper ID work?
- #56 411685 HOSE—vent, valve to carburetor
I also need to connect
to the new air intake assembly.
- #31 385204 GROMMET—filter to valve cover
- #32 403192 FILTER ASSY.—ventilation, crankcase (prior to 1978)
View attachment 17855
I do have everything, assuming its in better condition than the brittle hose.Do you still have the old valve cover grommet? I ordered a new one, and it "looked right", but I could not get it to fit. It was a poor replica of the old one. So I ended up finding and reusing my old one. It's experienced the expected atrophy over the years and isn't as tight as I'd like, so I still need to revisit that--but at least it fits.

The threads regarding the airbox I was thinking of belonged to @Keith V , and he refers to it as a Duramax filter. I gather he got it from a Chevy Express. I'm curious what year, as it doesn't seem the Duramax was offered in all years with the filter pictured.I do have everything, assuming its in better condition than the brittle hose.
Any luck with your search for an air-box to replace the cone filters that roar?


I look forward to your results.The threads regarding the airbox I was thinking of belonged to @Keith V , and he refers to it as a Duramax filter. I gather he got it from a Chevy Express. I'm curious what year, as it doesn't seem the Duramax was offered in all years with the filter pictured.
I'm seeing a Wix 46573 in one of his pictures. The Wix website doesn't have application data on their website. RockAuto lists these specs:
View attachment 17861
I'm hoping that CFM rating is BS. Many times RockAuto specs are on-the-money straight from the MFG, but sometimes they have errors. I don't see any spec data on the Wix website, so maybe the info is buried in some publication from them. I'd have to dig deeper.
In any case, I can't find any application data connecting this filter to the Duramax Express. It is used on MANY Express vans (with 4.8L, 5.3L and 6.0L engines), and the associated airbox looks nicely packaged and easy to install in custom applications. But is it truly big enough? I'd like to see it spec'd with a big block or a larger displacement diesel to be sure. The Duramax Express filter I was able to find was a shorter, much wider oval shape and had a completely different airbox. It's probably fine, I might be over thinking it. If it comes sized with a 4" output, it's gotta be in the ballpark.
Didn't hear back from Paul but JimK has one and you know it'll work.
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The boot is less than $4.00 but it has harder rubber on both diameters but softer rubber in the middle. Boots can also be used for idler arms or wherever a boot is needed. Don't think it would be big enough for the lower ball joint though.My mechanics keep replacing the entire joint as they say the labor is the same and the joint is no more expensive (around $25) than a boot. Just trying to figure out why the boots keep failing....
What do they mean by "blown out"? Are they actually tearing? Or are they just failing to hold the grease in at the top or bottom? All boots will allow grease to come out if over-filled. It doesn't matter how well they're made, the pressures are very high.I purchased a replacement boot last time around using a part number from the forum. It was too small and wasn't used. So I let the mechanic order the full ball-joint. $4 vs. $25 is nothing compared to the labor charge, so why sweat it.
I'm more interested in why I'm going through joints/boots so quickly....
Well now that's interesting. It almost sounds like it's been getting squeezed against the knuckle too tightly? Is it both sides? I've seen people customize steering arms with the tapered reamers, and if you go way too deep, you don't get the nominal clearance for the boot to move around. Not sure if it's feasible for something like that to happen to the ball joint, I'd have to look at it. Another possibility is just super cheap rubber parts. There are urethane tie rod and ball joint boots out there, sold universally. They should last longer, but you'd have to start by gathering all the appropriate measurements.Shredded/torn all around the perimeter. Compressed and dry. Looks like fibers visible, like a worn-out tire.
View attachment 17854
Is there a specific hose to replace this when it becomes brittle, or can a generic hose of proper ID work?
- #56 411685 HOSE—vent, valve to carburetor
I also need to connect
to the new air intake assembly.
- #31 385204 GROMMET—filter to valve cover
- #32 403192 FILTER ASSY.—ventilation, crankcase (prior to 1978)
View attachment 17855
I purchased a replacement boot last time around using a part number from the forum. It was too small and wasn't used. So I let the mechanic order the full ball-joint. $4 vs. $25 is nothing compared to the labor charge, so why sweat it.
I'm more interested in why I'm going through joints/boots so quickly....
For the input, I'm just going to go with a "breather".Do you still have the old valve cover grommet? I ordered a new one, and it "looked right", but I could not get it to fit. It was a poor replica of the old one. So I ended up finding and reusing my old one. It's experienced the expected atrophy over the years and isn't as tight as I'd like, so I still need to revisit that--but at least it fits.

That's great news! I sure hated wondering if my coach was going to restart on those hot summer trips, at the gas station. It was such a relief when that issue was finally gone. That's the worst, those gas station restarts. Just the ideal amount of time for extra heat-soak into the already unhappy old starter.The coach now starts IMMEDIATELY upon turning the key. EFI combined with this starter makes a HUGE difference in the drivability of the coach.
Non-Facebook link pleaseI just posted a video on FB showing a guy making OE looking vacuum lines with 90 degree bends, using regular lines and a short piece of shrink wrap at the bend.
And that is exactly where I was noticing the issue; stopping for gas/groceries. Actually called AAA after a grocery run. Before they arrived I tried it once more and it started (cancelled the service call). Never want to deal with that again!That's great news! I sure hated wondering if my coach was going to restart on those hot summer trips, at the gas station. It was such a relief when that issue was finally gone. That's the worst, those gas station restarts. Just the ideal amount of time for extra heat-soak into the already unhappy old starter.