I’m in the middle of updating my brakes.

I have an 83 Toyota Pickup.

I put a used IFS rear axle in with the larger drums, brand new MC, new V6 Calipers, and new Fj40 Rotors.
I read that the LSPV (Load sensing proportioning valve) was not needed and I bypassed it and it went to the bone yard. I did bench bleed the MC.

The problem is when I’m bleeding the brakes the rear works fine (1. Drivers side rear 2. Passenger side rear) but when I go to the front, about four or five pumps and the peddle stop about halfway in and the front calipers have not even touched the rotors. The calipers after this stop moving in and out with each pump of the peddle. If I bleed the rears, then the peddle will go to the floor and the front calipers start working again to bleed. There was only 2 lines running to the LSPV so I don’t need to cap anything running back to the front.

Is this because I need to adjust the rod in the booster or can I adjust the MC some how?

but when I go to the front, about four or five pumps and the peddle stop about halfway in and the front calipers have not even touched the rotors. The calipers after this stop moving in and out with each pump of the peddle.

I'm a bit confused here......

Why do you believe the calipers should move in & out while you're bleeding the brakes??

The calipers dont move when you push the brake peddle in and then let off. The calipers brake pads have not even made contact with the rotor so there is and 1/4" gap

If you are bleeding the... Therfor the nipple is open and the fluid is by passing the piston... If you close the bleeding nipple do they work then?

If the nipple is closed and you pump a few times with the peddel they stop moving