Ugh.......Chevy question
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Post Fiend
Joined: Nov 2008
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From: McKenzie River
Ugh.......Chevy question
I have a older Class C 24' motorhome with a stock 350 chevy, its PAINFULLY slow! Getting up to 55/60 mph is a ordeal with a 12,500 lbs vehicle with a 350. The motor is low mile and in great condition, would like to get a little more "grunt" out of it, does anyone make headers that fit the 350 in the van/motorhome chassis configuration? Thought headers would be a great place to start.........I would like to be able to do more than 35mph up a 6% grade!
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Post Fiend
Joined: Nov 2008
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From: McKenzie River
One can only dream...........I also know where there is a REALLY nice carbed 460 and C-6........but alas I am stuck with the 350 Chevy........would be really funny to have a Ford powered Chevy RV!
Post Fiend
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From: Paradise Found!
Hotshot
Joined: Aug 2007
Posts: 12,186
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From: St. Charles, Missouri.
People do these types of things more than you think, It's a lot of work in my opinion. Cause you have to get new transmission mounts and all kinds of stuff...
Put in a Diesel engine!
Put in a Diesel engine!
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From: Midwest
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Post Fiend
Joined: Nov 2008
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From: McKenzie River
No OD, TH400 3spd 4.10 gears...........hell it turns almost 3,000rpms at 55-60 mph!
I would love a OD!
I would love a OD!
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Post Fiend
Joined: Nov 2008
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From: McKenzie River
Too old to support.....its a 83.......Just need a way to improve on the thundering, 165hp and 270ft lbs of torque the 350 is good for without breaking the bank.
Hotshot
Joined: Aug 2007
Posts: 12,186
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From: St. Charles, Missouri.
it's only got a 165 HP?
Put in a different cam...
Here is a site you might want to check out.
Small Block Chevy Engine Block Identification
Put in a different cam...
Here is a site you might want to check out.
Small Block Chevy Engine Block Identification
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Post Fiend
Joined: Nov 2008
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Likes: 20
From: McKenzie River
it's only got a 165 HP?
Put in a different cam...
Here is a site you might want to check out.
Small Block Chevy Engine Block Identification
Put in a different cam...
Here is a site you might want to check out.
Small Block Chevy Engine Block Identification
Postmaster
Joined: Dec 2008
Posts: 3,940
Likes: 8
From: Southern Oregon Coast
Maybe something like this is what you're looking for?
Motorhome Headers
Does that thing have a Rochester Quadrajet on it? I'm not overly fond of those, but that maybe something to look at...
They do make overdrive units for the TH400, but they're not cheap - as, I'm sure, you already know...
Other than rebuilding the 350 and stroking it out to something like this:
Chevy 383 Stroker Engines
Or doing a 454 swap which entails swapping bellhousing/tranny...
I can't think of anything that hasn't already been stated...
Motorhome Headers
Does that thing have a Rochester Quadrajet on it? I'm not overly fond of those, but that maybe something to look at...
They do make overdrive units for the TH400, but they're not cheap - as, I'm sure, you already know...
Other than rebuilding the 350 and stroking it out to something like this:
Chevy 383 Stroker Engines
Or doing a 454 swap which entails swapping bellhousing/tranny...
I can't think of anything that hasn't already been stated...
Super Moderator
Joined: Apr 2004
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x 2 on the 383. (similar in bore/stroke to a 390) A 383 with the right cam and a 700r (non-computer trans) would not be cheap, but the money goes to the powerplant/trans instead of conversion expenses, and you should pick up 100 hp or better.
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Post Fiend
Joined: Nov 2008
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From: McKenzie River
Yes, its a Q-jet.......not overly fond of them myself, but usable. Thanks for the header link, thats what I am looking for. The clearance even with the stock exhaust manifolds is ridiculously tight on the passenger side, so I thought there must be special headers for the motorhome/van chassis. 383 stroker would be nice, but $$$ prevents that, gotta work with what I got.........Anyone suggest a good cam for such a HD application for a 350?