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Sorry, didn't mean to pee on anyone's parade with the "lesser" statement...
There's a water jacket near the lifter bores?? I can't say for sure, but the sleeves didn't really look at like a water leak band-aide. In fact, as I recall at the time, Keith made mention of the "niceness" of them too. Maybe Keith installed them? How long have you been using Pond's blocks? This sort of bugs me, I think I'll call Robert & Keith to discuss tomorrow and see if those once were the standard bill-o-fare. |
I've been using them for several years. I'll have to look back at my notes and see when I built the first one.
Turns out, the first one that I used, I had it pressure tested (standard fare for all aftermarket blocks I use, stems from my experience with Dove products) and it bubbled up through a couple of lifter bores. They back up against the water around the cylinders and if there's any porosity, they will bubble out there. |
Well, it's been a long time coming....
Had some minor technicalities with some parts, but finally got everything straightened out and moving forward. Dyno'ing on the 22nd. http://i170.photobucket.com/albums/u...ps0ea9034d.jpg |
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Dyno on the 22nd...!
Gives us just enough time to play - guess the hp/tq figures. I'll guess: 666hp with 666tq with a sinister engine note. Just cos it sounds like one hell of a build! |
Well it's been a sinister build for sure....hahaha
Torque would never be as high as the horsepower on a build like this, and I've never seen a 480-500 inch FE have over 600-620 lb-ft of torque on a normal hydraulic roller build. We use a Stuska dyno, which shows anywhere from 25-50 hp lower than the DTS and Superflow stuff, so I told Jeff I was going to stay conservative on my guess. |
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As you might imagine, I'm really excited to get this beast. I'm curious to see what it puts out but my guess is 650-670 HP and 625 lb-ft.
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Not feasible with a lot of setups. Cobra headers and side pipes just don't fit on every dyno.
Also, with 600-650 hp, the 5-8 hp that a water pump absorbs really isnt a concern. ;-) He's more than welcome to put it on a chassis dyno, but trying to reproduce the conditions that it will be under in the car isn't easy or do-able in most cases. |
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Patrick, you are fooling yourself if you are that reliant on dyno numbers anyway. They are for one purpose and one purpose only...to verify integrity and tune at WOT. I can dyno it here and send it 50 miles down the road and get another 50 hp.
You're also fooling yourself if you think that everything will be perfectly simulated more than 3/4 of the way across the country. Gas is not the same. Sea level is not the same. It's not up to me what the customer does when he gets it. I can make recommendation as to what size and shape headers and pipes to put on it to be optimal. For all I know, Jeff could ditch the TKO and put a C6 in the car and drop another 50 hp to the tires. I can only optimize here, what the customer does with it when they get it is beside the point. |
Btw Patrick, I thought that you had a little more respect for me than to stick your head in a build thread just to insinuate that I'm not doing things up to your "standard."
Chas, my point from the other day is being backed up yet again. |
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Explain to me why that's logical in any way when you can go to another dyno and see 5-10% difference in hp? It's a waste of time in every respect unless you were dyno tuning headers for a race application, where the engine would come off the dyno and go in the car and be raced in the same vacinity so the tune would be correct.
Done. |
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They are not "inaccurate", but the different brands show different results. A DTS will usually show lower than a Superflow. A Stuska will usually show lower than a Superflow.
On a rear wheel setup, a Mustang brand will show lower than a Dynojet. I have fits because of the various dyno shoot-offs on the forum. As others have said, the only real true indicator of how much horsepower you have is to take it to the strip. Otherwise, I can literally dyno an engine on the dyno that I use, then take it 50 miles down the road and get a bigger number. It's not that guys are falsifying the numbers because they want to sell horsepower....well, maybe a select few are, but different brands show different results. So, to pay big money to ship someone headers and sidepipes to use on their dyno just to get a true indication of what the engine is doing through the exhaust is really futile. Say you dyno it and get 550 hp, then take it to another dyno and get 500. What was the use? You don't race flow benches and you don't race dynos....both are just really good tools for coming up with a standard, then seeing what differentials you get by trying different things. |
Brent - isn't Patrick correct in suggesting pipes being fitted? If the purpose of dyno testing is "to verify integrity and tune at WOT", what's the point of tuning with no pipes and no air filter in particular, when the tune is likely to be different when pipes and filter are finally added when the engine goes into Lippy's car and he actually gets to drive it?
Cheers, Glen |
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