420 and f motor

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Joined
Aug 22, 2005
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so what is the deal with a sm420 with the stock 6cyl i know it can be done what all is involved im shure this has been answerd a thousand times but i searchd and dident find much in the way of info outher than every one with a 420 loves it

i would like to retain th estock 6cyl and get the low gear of the 420

this would be in a 72 fj55 if it makes a diffrance
 
Last edited:
i found one of the links you posted i was jsut wondering what all it took to swap in a 420 with the stock 6cylnder
 
3 speed pressure plate, fly wheel, fork, bell housing and throw out bearing. Small brass pilot bearing extender for sm420. Chevy 11" clutch plate. Bearing sleeve over 420 input shaft. Stock slave cylinder. 3 speed shifter. The 3 speed bell housing takes 2 metric bolts on top IIRC and the bottom 2 are stright throuh? Driveline mods.
 

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