My '55 Chevy Half-Ton, Converted to 4x4....

Gettin' It Back On The Road, Page 5: UPDATE......... Had some time to work on my truck motor a bit, am getting it ready to go back in the truck....

Got together all the bolts for the flex plate and the BOP motor to Chevy trans adapter plate, and got it all fitted together and ready to go in the truck. The 4L80e torque converter is a six bolt unit, so we had to drill three additional holes in the flex plate, and make 1/4" spacers, and a 1/4" nose spacer for the nose on the TC, due to the 1/4" set back on the tranny due to the adapter plate. As one of the additional holes was right on the flex plate counterweight, we found that two washers added just enough to match the other five 1/4" spacers. All grade 8 bolts, and all will be locktighted in to make sure they don't come loose! I also had to put in the long locator dowels as the original short ones were too short with the adapter plate on there....

In the front I had to fit on brackets and pulleys, for the alternator, powersteering pump, and the A/C compressor. Nothing matched up! A 1/16" spacer moved the water pump pulleys into alignment with the crank pulleys. Then the PS pump had to come out 7/16" to match the middle and rear pulleys on the crank, so made spacers for that and got it aligned. Then the alternator was cocked sideways slightly in it's bracket to align with the rear crank pulley, so four strategically placed washers on the alternator's mounting bolts got it cocked over just enough and aligned properly. Then the A/C compressor mount was in too far, and a bolt on the compressor was hitting the new aluminum heads, so it had to come out 1/4", more spacers were fabbed and it came into alignment.

I did all the preliminary adjustments by adding washers, stacking them up and checking until I got alignment, then fabbing the steel spacers to match. This gave me good belt wrap for the PS pump with the middle crank pulley, and good wrap for the A/C compressor with the front crank pulley. I think I am good to go here....

Couldn't find the original Olds hold down clamp for the distributor, so had a piece of 1/4" plate close to the right size, cut a piece of cardboard for a template and cut the steel, bent the fingers down slightly at the dizzy, got lucky and hit the bolt hole location just right on the first try, and it works slick! Added some fresh paint and it sure changed the looks !!!

Put on the fuel pump and it was hitting the Edelbrock head, had to grind clearance in the head, no big problem though !!!





Gettin' It Back On The Road, Page 5: First Post......

Thought I'd show the remote vacuum booster brake system on this truck. The stock master cylinder under the floor is used to actuate a remote slave vacuum booster master cylinder also mounted under the floor, keeping the firewall completely clean....

Here's a top view of the remote master cylinder, visible is the large vacuum port, the bleeder screw, the outlet connection to the brakes on the end, and the inlet connection that comes from the actuating (stock) master cylinder....

With the outlet on top like this I have not had any problems getting this master cylinder to self bleed all the air out when filling the system. The actuating master cylinder should be bench bled before installing to make sure all the air if out of it....

Another view.....

On one side is a filter system for the ambient air that goes in/out on the non-vacuum side of the diaphragm....

Here's the stock '55 Chevy half-ton pickup under floor master cylinder, and the slaved remote vacuum booster master cylinder

It's been difficult to get a good shot of the actual installation. If I get one I will post it.

More Later......

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Four x Four Front End Rebuild Page 2

Four x Four Front End Rebuild Page 3

Four x Four Truck Rebuild Page 4

Link To Truck Conversion Page 6

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