Motorhome 440

[1968rt]

Take a look at the chart. You can trim the input shaft accordingly.

 

[440 Charger]

Take a look at the chart. You can trim the input shaft accordingly.
View attachment 1143357

Nice specs does that work for a Hemi ?

 

[1968rt]

All hemi cranks should be cut deep enough, no need to trim input shaft

 

[MelroseMopar]

If you are staying south of 550 HP you will be fine with the cast crank drill it and run it!!

 

[Habib]

Thanks for the replies everyone. Let me ask one more thing. What's a fair price I should pay? The guy is my friend. He told me, 550. I feel that's fair. But wanted some opinions first.

 

[66/440]

Use the thin .015 head gaskets to pickup a little compression. +2 on the Hughes low compression cam, it will make you happy! The last low compression 440 I had was 7.6 /1 and the cam made all the difference, allows the cylinders to build some extra pressure.

 

[66/440]

I think $550 is fair especially if you can get the accessories with it. You will need the brackets. Be aware that some motorhome 440's used a right side outlet water pump. If you have a left side radiator you will need to change the pump housing. Also be careful if you decide to purchase an aluminum water pump housing as some are very restrictive. See this post from BBD and scroll down to the photos of the water pump. https://www.bigblockdart.com/threads/my-completed-440-for-my-68-dodge-dart.15341/page-19#post-118652
Also you will most likely need a different oil pan.

 

[1968rt]

Here's a good article about making over 400HP with a stock low compression 440.
https://www.forabodiesonly.com/mopar/threads/dyno-testing-a-stock-1972-440.249866/

 

[440 Charger]

Some of those old RV engines had forged cranks but I would not bet on it. If it has a cast crank in it there isn't a real big issue using it. Don't expect 700hp out of it. You can get a Hughes Performance cam Its specifically made for low compression engines. The pistons will be well below deck and the compression ratio was somewhere between 7.5 and 8.5 they were not made for performance. They were made for grunt. I would not say that he needs to install a cast crank? Why would you go backwards.. If you mean performance wise a forged crank would be the way to go. If you get to the crank and you can see 440 embossed into a counterweight its a cast crank. Also there is a slight chance that it may have 6 pack rods.

Agree totally I pulled my 440 out of a 1972 motorhome and was amazed when running the part numbers forged crank forged pistons 906 heads 6pack rods 11.3 to 1 compression ratio. Dont know is someone built it or if factory but was very glad to see the setup. Also it was an industrial block and the 727 is interesting the planetary units had 5 gears instead of the usual 3.