Roush 427r only made 400whp :(

[Ace23]

Originally Posted by DAVID GAGNARD

Sorry about that,was looking at the original thread starter with the Roush engine.......

Your pan capacity is 7 quarts,you also have to add for how much oil your filter holds and how much oil is in the oil lines/oil cooler ....on a typical PH8 type oil filter,figure one quart....depending on the size of the oil lines/cooler,that could be as little as 1/2 quart,so your total capacity could be as little as 8.5 quarts with an oil cooler.....

Once you figure out the total oil capacity,do an oil change after the engine has been warmed up and add the amount you have figured it will hold to full....crank up the engine,let it run for a minute or two,shut it off,give it a few minutes for the oil to drain in the pan,then see where it is on your dipstick and mark your dipstick accordingly and use that mark from then on and you'll be fine....
As far as the low cranking pressure,I would not worry too much about it right now,maybe it should have more or the gauge can be off,either way your numbers are not bad and the good thing is from the high to the low is only an 8% difference which is a good thing!!!
When doing the cranking compression test,did you remove all 8 spark plugs and hold the carb butterflies wide open???? that is the proper way to get an accurate reading....

David

Out of curiosity I went out to the shop after work tonight and was going to check the oil level on the dip stick as I know for a fact the car has 10 quarts of RP and whatever oil is in the lines and oil cooler. The oil mark is at the "add" line......so you can pretty much say the dipstick is out in left field. Funny thing is when the car had 9 quarts in it on the dyno the dip stick had the same measurement......hence the thought hey it needs a bit more. How in the heck can the oil on the dip stick not change when you add a whole quart? I wonder what its going to look like when I drain all the oil and add 7 quarts back in.....wonder if it will even register on the dip stick. Non the less it doesn't need to be driving around with 10 quarts in a 7 quart pan plus what ever residual oil is in the lines and cooler.