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Re: '76 International Loadstar, I need info by Mark O.
Post New Message Most of the IHC gas engines used in buses had vacuum operated throttle plates. At high RPM's the vacuum would pull the throttle plates closed. In other words, you can not disable the governor without changing the carb.

You should never run an IHC 304/345/392 at more than 3400 RPM for any period of time unless you want to blow the engine up. They really do not like to wind up that tight. 3200 RPM cruise speed they will do just about indefinitely.

If the top speed in your bus isn't fast enough, if you have 10-hole Budd wheels the least expensive and easiest way to up your top speed is to switch to larger tires. If you have 9:00X20/10X22.5 tires switching to 11X24.5 will raise your top speed at least 5-10 MPH.

IHC still has available new rear gear sets to fit almost any IHC product. Almost every truck wrecking yard will also have different gear sets available.

Understand none of the IHC gas engines have enough HP to go very fast. If you change to a too fast of a gear set you will go really pokey up any hill. We had two buses that were identical except for the rear ends. One topped out at 47 MPH and the other 57 MPH. On ski runs the two buses got to the top of the hill at virtually the same time.

The DT466 is a completely different animal from the gas engines. It has a lot more go on the hills. Like the gas engines it does not live long if you over rev them. 2600 RPM is tops if you want your engine to live a long time. A gear set to give you a top end of about 65 MPH is about the best. Any faster and you will end up downshifting for every hill.

Good luck and happy trails.

Mark O.
All Messages in ThreadAuthorDate
Post New Message'76 International Loadstar, I need info Janelle 8-20-02  
  Reply to MessageRe: '76 International Loadstar, I need info Lee 8-22-02  
  Reply to MessageRe: '76 International Loadstar, I need info Michael 1-23-04  
    Reply to MessageRe: '76 International Loadstar, I need info Tom Dangelo 8-23-02  
    Reply to MessageRe: '76 International Loadstar, I need info Jim 10-7-02  
      Reply to MessageRe: '76 International Loadstar, I need info jay 9-12-02  
        Reply to MessageRe: '76 International Loadstar, I need info Mark O. 9-21-02  
        Reply to MessageRe: 78 International Loadstar, I need info louie 10-17-07  
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