I'm finishing up a 494 for my convertible and am wondering, for the folks who have installed an oil by-pass line from the oil pressure sending unit to the passenger-side rear oil galley, how much clearance did you use? Mine looks a little tight at about 1/8" or maybe a tad more. The flywheel is a JW SFI one. o No:
I don't think there is a standard. As long as it does not rub on the fly wheel/ flexplate. Mine is pretty close also. Used a bought-at-Lowes 1/8 pipe 90 degress to 3/8 inch (#6). It was the closest thing I could find that would stay close to the block.
OK, I guess I'm good then. I bought the kit from AM&P, so I was (am) hopeful that he sourced the parts that would give enough clearance. I tightened the 90 fitting as tight as I dare. I just don't know how much things move around back there under full steam.
Sure looks like #6 to me. In the past, when I have done this mod, I have not had a lot of luck with AN fittings into the block.. I typically have tapped the RH galley hole slightly deeper, and then went with a brass 1/4-NPT male/ 90* fitting, that you could then screw in the #6- 1/4 NPT adapter I will see if I can find a pic of one of my setups.. That looks a bit tight to me.. but it may be hard to tell, due to camera angle. JW
ditto,looks too tight,what about the torque converter bolts,need to use the thinnest head bolt poss. like the orig. were i had to tap my hole deeper just like jw says,i greased up the tap and tapped it quite a bit and assembled it a few times until i had a min. of 1/8 inch or more just for peace of mind ken
Bob, Well, I looked thru my pics a bit while I was sitting here eating my daily Salad for lunch.. But did not find a real good one, but here are some, and some discussion of the fittings I have used in the past. First, when doing final shortblock prep, (if I remember p ) I set this fitting in the RH rear galley of the block, and tap it a bit deeper so that it lines up where I want it to point, and the square end of the fitting just about touches the block. This type of Female Pipe Thread to Male Pipe thread fitting was the shortest overall that I found some years ago when I first did this setup. It's called a "Street Elbow". In your case, you can grease a 1/4 NPT tap if required, and deepen the hole just a bit.. the grease will catch 99% of the shavings, as your just going to tap it a little bit at a time.. when your all done run a small magnet into the hole, and pick up anything that might be there. Then I just use a 1/4NPT to -6 hose adapter, straight, to hook the line to. I have always ran the line a little different than some folks, that's just personal preference more than anything probably, but my setup works well for clearance, and provides a handy tap for oil pressure, at the back of the block. I use the bellhousing as my gauge for clearance.. the lines/fittings are very tight to the end of the bellhousing flange.. maybe they stick out about a 1/16 of an inch or so. They are behind the complete flange of the crankshaft, by about 1/8 inch, so you have that clearance, plus the thickness of the crank flange for clearance. If I recall, there typically is about 1/4-3/8 clearance, when all together. It's not "scary close" that's for sure. Here are a couple of the best pics I could find, to illustrate. Note the position of the installed fittings in the first one here, in relation to the bellhousing flange of the block. This was not shot at the best angle to show the fitting/bellhousing relationship. If I had shot the pic from right over the bellhousing flange, you probably wouldn't see the fittings at all. Also in this pic, you can see what some folks used to do.. but I don't typically advise taking chunks out of the bellhousing flange.. this block was a good one, that we "recycled" to save the customer time and money. And then the whole assembly.. best pic I could find, sorry I don't have a more detailed one. That street elbow is available at any hardware store. Just look for one that looks exactly like the picture. JW
OK, I couldn't find a Street-L at Napa or Ace that wasn't huge, but Lowes had one. I didn't have to tap the oil galley any deeper, and a friend had a straight 1/4" pipe to -6 hose adaptor: And presto, the lines dissappears: Shots of the starboard side: Thanks Jim! :beers2:
Yep, if you notice in one of the pictures, a converter bolt is sitting on the cart. If you keep the street L counterclockwise (looking at the back of the block) as much as possible, you get the most clearance possible.
I just did mine with an AN 90, had to tap the hole a little but it sitting just about like you brass fitting. Now I have to figure out how to get oil to it. Mine has the scavenger pump goes in at the pressure port. Any Ideas on this? Thanks Rick
Can you tell me what brand of spark plug wires those are and also where can I get those wire holders for the plug wires? allen
The wires are Taylor Spiral Pro that I got from Summit a few years ago. Both style wire looms are readily available at Napa. I use the regular Buick valve cover bolts w/ the stud for lower 4 locations, and I cut off the captured load-dispersing washer thingy from the bolt.
