[Roadkillz]

Almost every high performance car has at least a single over head cam design. Cars advertise having Duel overhead cams and most people prefer overhead cams to pushrods. Most people think pushrods are dead. However they seem to be making a come back. With V.V.T. it will mean that pushrods will stay competitive. In the last five years the GTS category at Le mans has been dominated by pushrod engines. The Viper GTSR,the corvette C5R,and the restricted SaleenS7R. The dueloverhead cam engines cant compete. So do you think the pushrod design is dead or under developed.

 

[BIG LAW MAN]

Long live the pushrod!!

 

[Natural Hi]

Isn't the new C6 still going have push rods?

 

[Punk Boy]

i vote for neither underdeveloped or dead.....

the pushrod will be around for a long time to come but it is in no way underdeveloped

 

[Roadkillz]

Nice car Natural Hi artyon:

Yes the C6 will have a pushrod engine

Compared to all the development duel over head cam engines pushrod technoligies are vary much underdeveloped. For one big confusing reason. Fuel efficency, sinch the seventies they have been tring to make cars more fuel efficent. Instead of spending all of the money the US industry simply took a short cut. Small engines, since in order to make good power with a two liter engine you need rpm. At higher rpm's you need as much air as you can get. Two intake valves are better then one on small engines at least. So all of these companies have been pouring money into DOHC designs. Pushrods didnt impress for about two and a half decades. Until the viper and the C5 corvette came out. The viper just used cubic inch to get the job done. A big lack of refinment since they just converted there new iron block V10 into aluminum. The vette had a purpose built pushrod motor but it wasnt until the Z06 came out that marked the first big development since emmision standards. Then goes the 2003 viper which is much more refined then the previous one. Rumors of the C6 being lighter and having some sort of VVT means that pushrods may catch up in the next 5 to 10 years.

 

[bkuper]

no.