Pan E Vac's

[Tom Meyer]

Back in the day somebody did a lot of work on tube placement, openings and what not. With his car on jack stands he had the hose in a pan water and had it set up so fine it would empty the pan in no time, took it to the track and it was worth nothing. Save it for something else. Been on here before but a pvc system showed something, just remember all that air that we try to get into the top of the engine with trick carbs intakes and cly heads is moving under the piston and the better we control it the better it makes the oil and HP. But you still need a good ring package. Tom

[rx dealer]

I was down 9 h/p on the dyno with my 350-255 super stock engine WITH pan evac...in the trash it went...Luke

[Dyno]

Originally Posted by rx dealer

I was down 9 h/p on the dyno with my 350-255 super stock engine WITH pan evac...in the trash it went...Luke

I know in theory it should be worth something, on my car it shows nothing either way. I need new headers built and I am sorting things out. thanks, Dyno

[Jeff Teuton]

We went back to back on the dyno about 3 or 4 years ago. Nothing fancy, just tubes in the collector tied to the valve covers. This was a 440 SS motor, made 6 hp no changes. Made two pulls that were identical. And we just always run them in SS.

[nolongerracing]

Did anyone use a vacuum gauge to make sure you were pulling vacuum? It takes time to seal all the leaks and if it's set up right, you can pull nearly 5 inches. It's worth the effort.

[GTX5877]

Have done A-B-A testing on many types of engines, always worth 5+ hp. Connecting vacuum gauge on dyno is very important to affirm gasket sealing. Can pull 5" on a nothing fancy system. Have heard as high as 10" achievable with some work. Smoke machines very helpful, especially on vacuum pump engines to find pesky vacuum leaks. If it has vacuum leaks, it will not create a vacuum. And the obvious...ring package and ring seal always play a big part in the effectiveness.

Tom Hestness