I working on a Friends 61 Falcon it has a 1979 351 Windsor in it. He had the engine built to a 408 any way from the get go it has had a slight rear seal oil leak. It has the 2 piece rear seal. What is the best way to repair it? The trans is out for a rebuild. Does the crank have to be dropped to replace the seal?
Thanks
Glen

It wasen't red they gave me a slow tree.
Glens67
2005 Sportsman Class points winner Inifineon Raceway 2005
67 GT 390 (428 CJ) Mustang FB
65 Galaxie 500XL Hard Top 390 4 Speed
65 Galaxie 500 4 door 352 auto
48 Willys CJ-2A
82 VW Van Westy Diesel 27.10 @ 46 mph 1/4 mile
96 Exploder
1 428 industrial engin
97 F250HD 7.5

loosening all main caps. I've always loosen all main caps which will give a little more room to negotiate the r/m seal in & out. I stagger seal ends in block/main cap, not joining them together at block. Remember, seal lips point in, not out, when you're on your back & facing upward under car. Good time to inspect bearings and r & r if needed.
Good Luck.

On SB Fords, the crankshafts flywheel bolts are open to the crankcase, in other words if the flywheel bolts are installed without some type of sealer or Locktite, oil can wick thru the threads of the flywheel bolts & leak oil onto the clutch, or drip out of the bottom of the bellhousing. Worth taking a look at.

428 powered Fairmont drag car, Best ET:10.03@132.11MPH, best 60 ft: 1.29
59 Meteor 2 dr. sedan 332, Ford O Matic
74 F350 ramp truck 390 4speed

What I was hoping it was, but the Flex plate bolts were dry and had lock tite sealer on them. I will make sure that the ends are staggered in the block and lips face in.
Thanks
Glen

It wasen't red they gave me a slow tree.
Glens67
2005 Sportsman Class points winner Inifineon Raceway 2005
67 GT 390 (428 CJ) Mustang FB
65 Galaxie 500XL Hard Top 390 4 Speed
65 Galaxie 500 4 door 352 auto
48 Willys CJ-2A
82 VW Van Westy Diesel 27.10 @ 46 mph 1/4 mile
96 Exploder
1 428 industrial engin
97 F250HD 7.5