I was thinking the I6 perches and FE perches are the same, and they set the motor higher. My neighbor left the FE perches in his 69 and put a 351w, and if you look at it, you can tell it sits a little high...So I don't think that is your solution. Check out your clearance between the front of the motor and the radiator. If you can, move the perches to the front set of holes. That may buy you a little more room around the tranny, since it is bigger at the front. You may have to run electric fans if you do that, but that is no big.

ROb

 

i was reading that in 771/2 they changed the I6 perches and at that time the FE wernt available in f100

 

Optimim angle is when you add the angles the cancel each other out.

a 5 degree downat the transmission needs a five degree up on the rear axle.

A 1 degree +/- difference is acceptable.

Garbz

 

let me get back to the tranny and engine slopping back. is this slope goin g to hurt the tranny or engine in anyway, or the lub process of engine or tranny.

 

With what little slope you are dealing with, lube will not be a problem. All automatic transmission are lubricated by oil flying out of the clutch packs as the parts spin around. There is just enough oil in the pan to make sure the oil pickup on the filter is submerged in oil to prevent it from sucking air. All hydraulic pumps do not like air. If you break down an automatic transmission, it is a big hydraulic pump with some clutches and gears. Some pumps take air better then others but that is all the oil in the pan is really doing. Bottom line on air, it will wipe out a pump eventully. Other wise most of the oil is in the Torque converter, and then into the valve body and the applied clutch pack. No parts are submerged in oil. Parts rotating in oil just airate, causing air bubbles and problems.

Same thing applies to your engine, no parts are submerged in oil. You need enough in the pan to cover the oil pickup while it is running and to make sure you have a supply of oil for the pump to suck up and move through out the engine. A lot of the oil is through out the engine and it takes some time for it to drip back to the pan. When the engine is shut off most of drips back to the pan.

In an automatic the bulk of your oil stays in the torque converter. Most automatics hold about 3 or 4 gallons total, the pan only holds about 4-6 quarts depending on the transmission. That is why when you just change the filter and fluid, you really do not do much, and that is why they need to be flushed to get all the old oil out and all new oil in.

The real negative to excessive drive line angle is vibration and will fail u-joints quickly. That is why on real radical 4x4's they use CV joints as they will tolerate more angle than one single u-joint. However they are a lot more expensive than a u-joint drive line. I have lost a drive line in my 65 years ago due to a wore out u-joint and it is not pretty going 45 and it brakes. That spinning driveline loose tears a lot of equipment of up.

Jeff