This is a decent 4 day split aimed specifically for powerlifting.

It does require a spotter, as you are supposed to get every rep in as close as possible to your 1 rep max.

Its primary aim to to build strength... not muscle, but obviously muscle will be a byproduct.

Day 1 - Shoulders & Triceps

Military Press 4x6 reps
Incline Bench Press 4x6 reps
Dumbbell Front Raise 4x8 reps

Lying Tricep Extensions 4x8 reps
Close Grip BenchPress 4 x 8,6,6,4

Day 2 - Legs (1)

Squat 6x4-6 reps
Leg Curl 4x4-6 reps
Leg Extensions 4x4-6 reps
Calf Raises 4x15 reps

Day 3 - Chest & Back

Barbell BenchPress 6x4-6 reps
Weighted Chest Dips 4x4-6 reps
Dumbell BenchPress 4x4-6 reps

Seated Row 5x10,8,8,6,4 reps

Day 4 - Legs (2)

Deadlifts 6x6-8 reps
Leg Curl 4x10 reps
Lunges 5x12 reps
Calf Raises 5x15 reps