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Old Jan 2, 2021 | 07:06 PM
  #16  
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Your short drive shaft may or may not be a little short thinking about that.
 
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Old Jan 2, 2021 | 07:09 PM
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Driveshafts I'm not too worried about as Im getting new built according to final measurements. it would be nice to get the engine and trans sitting where they should be though.
I know conversion kits to 460 engines are available. but can't find anything for 351M

Do appreciate your replies though.
 
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Old Jan 2, 2021 | 07:18 PM
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If it looks like it’s sitting right I would make new holes and be done with it.
 
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Old Jan 2, 2021 | 07:23 PM
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Maybe. I'm happy with where it's sitting, but will do some more research before re-positioning the rear support. I've plenty of time to mull it over and other things to work out. Electrical system, injection system,
how to get a power steering gear box in. lol..

Thanks again and happy new year.
 
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Old Jan 2, 2021 | 07:27 PM
  #20  
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Oh yea no problem been there done all that with my 74. Happy New Year
 
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Old Jan 2, 2021 | 07:29 PM
  #21  
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you did the update electrical and conversion to power steering?
 
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Old Jan 2, 2021 | 07:43 PM
  #22  
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I did not do any electrical other than pertronix for ignition. I did do 78/79 power steering and crossover when I swapped to a hp D60 front axle. Also did fuel injection on the 445 I built.

That was all in the last 10 years. I kinda forget some of the things I did to be honest. I do need to address the headlight wiring as it trips the breaker when high beams are on for a while.
 
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Old Jan 2, 2021 | 07:50 PM
  #23  
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I'm doing the complete electrical upgrade. Headlights to tail lights. Dash is a pain though. Have to terminate most everything. hopefully headlight shouldn't be an issue as the system is designed with higher amperage and voltage reulator. going to Leds will help.

power steering though is screwing me up. Front crossmember doesn't make it easy to mount a gear box to the inside of the frame rail on drivers side. Options are to modify radiator support to fit the gear box in there as with the 78/79. or get a box that mounts on the outside of the frame rail. or go to different gear box all together.
Still haven't figure that out.
 
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Old Jan 2, 2021 | 07:55 PM
  #24  
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I notched and boxed the crossmember and frame to accept the 78/79 3/4 ton 4wd box. There is no cutting of the radiator support. I’ve done 2 highboys like this and both work good.
 
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Old Jan 2, 2021 | 07:58 PM
  #25  
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I'm gonna have to look into that one. hadn't really considered cutting half the crossmember away to fit the gear box.
 
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Old Jan 2, 2021 | 10:39 PM
  #26  
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Originally Posted by xaos1964
originally a C6. Original engine was the 360 as sixpack mentioned. Im installing the 351/400M
but I believe the motor mounts (pedestals) are the same.
I couldn't tell you for sure what the differences are, but I just looked up the part numbers for the engine perches and they are definitely different between the FE and the 335.
 
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Old Jan 2, 2021 | 10:40 PM
  #27  
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****. do you have the part number? and thank you
 
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Old Jan 2, 2021 | 10:48 PM
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The part numbers for the 77 (pre-serial Y20,001 a.k.a highboy) are D7TZ-6028-A for right side and D7TZ-6029-A for left. The later 77's and 78's used a different number yet, but it looks like just a revision change so they may work too- D7TZ-6028-D (right) and D7TZ-6029-D (left). 79's used the same number for the right, but D8TZ-6029-A for the left.
 
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Old Jan 2, 2021 | 10:50 PM
  #29  
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that's awesome. thank you very much.
now lol.. know where a person might get them?
 
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Old Jan 2, 2021 | 11:01 PM
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I'm going to bet these will be wrecking yard only. I did a quick and dirty search and didn't find anything NOS, but there are a couple of other NOS parts wizards on the forums here that might chime in with a more definitive answer.
 
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