LQ4 in a 1971 Nova
You might also check the wheel axle bearings.
For driveline angle. Tremec has a free app for both iPhone and Andriod. Just search for "driveline angle". And just follow the instructions to get how everything is setting.
I also use a andriod app called "Clinometer" to find what the engine and rear end angled were. it helped on getting my front end close so i could drive it until i took it to the shop.
BC
So I pulled the trigger on an L99 water pump and tensioner, with help from Clint and kirk69Nova. Since I have high-mount AC, it appears that I'm going to have to get creative with the tensioner. My aim is to do something similar to what roadrunner69 did:
Good Guys is this weekend, and I'm taking her out for autocross, so I don't know if I want to try to make this work beforehand.
The Best V8 Stories One Small Block at Time
Take a look at my new CAI its simple. and looks good. I ran a friend with a 5.3 giant turbo e85 stang. End of second he came around me. Time to fill the bottle lol.
If you need help doing the accy drive swap before the cruise let me know.
Edit: bczee, I never mentioned it, but I was able to bring the vibes down using the Tremec app for my iPhone. It's still not completely eliminated, but it's more bearable, and nearly gone between 75 and 80.
In other news, I took her out to Good Guys this past weekend, with not one but TWO gopro's. I'll have a few more on my channel once I get around to editing, but I'm especially proud of this gem from Sunday (the fun starts at the 1:30 mark):
Looks like you had a great time !. Can't really say that your GF really wanted to be riding shot gun LOL... But she'll get used to the fun ! The Pleasanton GG is coming up next weekend. Taking my Nova Sat and the Chevelle Sunday... will get some Vid's posted.
BC
Anyway, I installed the L99 water pump last night, and took a few photos to help others. FYI, I'm selling the L92 pump and LS1 tensioner. This is a better setup if you're running a passenger-side radiator inlet (outlet?).
I'm still undecided on what to do about the steam line. I have an outlet at my radiator cap, but that's currently directed toward a catch can. I might end up tying it into the upper hose as I did with my previous setup.
TB spacer as removed. I likely had a vacuum leak.
L99 (left) vs. L92 water pump. Note that the thermostat housing angle is slightly different between the two. The six water pump mounting holes are the same ~2.5" depth for both.
The L92 pump is roughly 5/8" further out vs. the L99, though the pulleys are spaced the same.
The L92 tensioner mount pads are just over 1.5" from the block. Disregard the digital reading, I bumped it and messed it up.
By contrast, the L99 tensioner mount pads are about 3" from the block.
LS1 tensioner (left) vs. L99. Both come stock with a ribbed pulley; I installed the smooth one for my application (and will do the same with the L99).
LS1 tensioner mount height is approximately 1.5"
The L99 is (obviously) shorter, at just over 5/8". Note that the tensioner body is below the mounting points, which will require me to clearance the bracket.
L99 pump as installed. The red will be removed from the bracket, and the blue are where the tensioner will be mounted.
The outlet sits fairly close to my Taurus fan, though it appears that the hose will still fit.
I tried to get a photo showing the location of the tensioner mounts vs. the forward bracket. I believe it's close enough to work without a spacer, though I'll need to verify once installed.
BC
A couple observations:
1) I'm going to run the steam vent to my upper radiator hose, as I did before. I'll use a 90° nipple to make it cleaner.
2) My intake is now hitting my AC compressor. bczee, have you thought more about doing the cowl inake a la your chevelle to your nova?
Tensioner mounting points shown in green. The blue arrow shows where I moved the idler pulley (from the far right bracket hole)
The radiator hos is touching the fan shroud. I'll have to be cognizant of chafing.
Nearly complete. Blue and red lines represent the vent line routing and 90° nipple, respectively.
So what I'm thinking is to run a flat filter on top of the engine, with a two-piece air box attached to the hood and engine. Ideally, I'd like to find a 180° inlet duct like that below, but might settle for something like others have done with circular filters.
Something like this would be preferred.
But I might need to do this. Ducts are from Jags That Run.
Redesigned AC bracket, with the idler moved above the tensioner. If you look closely, you can see the L bracket attached to the rear of the tensioner mounts at the water pump.









