Bangkok Dean

Comp Cams High Energy 268H with 1.6 rockers, runs great but head lights very sluggish and now have a leaking oil pan.

kevinator80

Is the high energy the same as the xe?

My xe268 with 1.6 rockers has 12-13" vacuum if memory serves me. My headlights aren't the swiftest things in the world either.

weimer20

Xe is a different grind. That cam should get you enough vacuum though. Are the lights slow at all rpms? If idle only, I would not only look for vaccuum leaks but also do a good tune. May want to apply a vacuum to the actuator with a hand vaccum pump and check them out for faults.

derv3tt3

I have the xe268 and headlights work fine.

Bangkok Dean

going up is not too bad but going down is nearly imposable with out moving the car. If I drive about a kilometer at say 20 mph they finally go down. All the vacuum parts only have a 1,000 miles on them and everything was fine till the 1.6 rockers were added. As far as tune the engine only has 1,000 miles on it.

1mpalss

My CC 268H hyd flat tappet idles at 650 rpm with close to 17" of vacuum - after tuning the BG Mighty Demon 650 carb. At 1000rpm it pulls over 20". Maybe you have a rocker adjusted a little too tight and a valve is not closing 100%? Also, check every vacuum line/connection to make sure you put everything back on securely.

The_Dude

My '80 had the same cam and had plenty of vacuum.

Budman68

Vacuum leakie...They cam should pull plenty of vacuum or at least store enough in the tank. Look for leaks.

StickShiftCorvette

I have a Comp Cams 294S and the vacuum is sufficient to work all systems quickly enough....

bertmeister

I have the same set up. No vacuum issues or oil leaks. Maybe you have a vacuum leak.

Bangkok Dean

Thanks for all the input, now i know where to look.

Bangkok Dean

OK found the problem the vacuum system filter was blocked. Blew it out and that seamed to do the trick. Today i ordered a replacement filter.
Thanks all........