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    4l80 swap - what linkage allows for all gears?

    I'm trying to keep the truck looking stock and would like to retain the stock 3 speed column shifter. I could have sworn that I saw a kit that adapts the stock column shifter for a 4l80e. I think it even had new stickers/numbers which included PRND321
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    4l80 swap - what linkage allows for all gears?

    I swapped in an 8.1l/4l80e into my '75 GMC dually last year. Everything is working great, but I can't shift into 2nd or first using the stock shifter. I know there is a kit out there to allow the stock shifter to hit all gears, but I can't find it. anyone know?
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    Intro and question about towing with a C35 one ton

    no, the L18 uses a different style. There is an outlet from the water pump that goes into the heater, then the heater outputs back to the radiator. My new radiator simply does not have an outlet for that return line. I don't need a heater for the near term and I think that bypassing it may...
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    Intro and question about towing with a C35 one ton

    yes that was pretty much my only issue. The killer is that I actually bought a really nice aluminum radiator with twin fans on it, but it didn't have the extra port for the heater hose, so I ran the stock one. Currently fabbing up mounts for the new rad...
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    Intro and question about towing with a C35 one ton

    that is not the stock color. the truck was originally a different shade of red. however - I believe is is 'a' stock color as my Dad's '77 was exactly the same. After doing some thinking on this, I put an ad on my local craigslist putting it up for trade for a smaller trailer. I bought that...
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    Intro and question about towing with a C35 one ton

    oh and yes, all 4 trailer brakes work GREAT!!
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    Intro and question about towing with a C35 one ton

    well... I bought this truck in August 2015 in bone stock condition (well to be honest it did have a 350 that someone had put in place of the 454). I almost immediately swapped in the big block/gearstar and I have not really driven it that much other than a 2000 mile trip to Arkansas to...
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    Intro and question about towing with a C35 one ton

    ok so we think that the HD versions of the truck were the same as the regular one ton with the only difference being the gear ratio in the axle? I have plenty of power and plenty of transmission. My concern is surrounding the fact that I may very well end up towing two rigs at the same time...
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    Intro and question about towing with a C35 one ton

    I'm running 3.73 gears and I think it's an open diff. Currently running the stock tune on the engine but have tweaked the tranny tables to put it in 'tow/haul' mode all the time. The truck is only used for towing anyway. I know I can tweak the tune quite a bit. so I wonder how I can tell...
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    Intro and question about towing with a C35 one ton

    Hey everyone! I am moderator of fsjnetwork.com where we talk about the old full sized jeeps. I built a '78 J10 Honcho a few years ago into a rock crawler and now I have built a '75 GMC C35 one ton 2wheel drive dually so I can tow the Honcho. My Dad actually had the exact same truck that he...

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