Recent content by Alstoy

The theory as I understand it is that rocker arm geometry is wrong allowing the rocker arms to put side pressure on the valve stem as it opens the valve. This would result in excess wear on one side of the valve guide resulting in an oval valve guide. New rocker arms are engineered to reduce...

Looking at 2007 C6Z with 31000 km. Heads checked 2000 km ago and all valves are in spec. Runs good doesn't burn oil. PO has changed rocker arms to reduce side loading on valves. Has anyone heard of this ? Will it help?

I have seen the standard seat and they look great and feel great but I have seen several reviews on long distance touring in the C7 lately where they comment on the seating position becomes very uncomfortable after extended time in them.(5-8 hr stints). This is something that is hard to...

I have seen several reviews where they report that the seats in the C7 while much improved for lateral support are not that comfortable for long distance travel. I would be interested to hear from those that already have their C7's if these are just isolated reports or if this is a common...

purchasing USA I agree with what you are saying, but to be classified as used you must be the second registerd owner. If you buy new then you cannot bring the vehicle across the boarder without paying the applicable tax in the state you purchased unless you wait six months or have 10,000 miles...

Purchasing in USA Here's how it was explained to me. First the prices are not that much less than in Canada. A 2014 C7 in Phoenix was $78,500 (Msrp). You then must pay the appropriate state and federal tax (12%), and this is all with an 11% exchange on the Canadian dollar. Then when you get...

Hi guys I am a new member of the forum and am in the market for a C7 coupe 2LT or possibly a 3LT. One question I have is should I get the Z51 package? In researching the subject I am hearing that the Z51 will make the ride rather harsh for extended trips. I am wondering though even with the...