Mack E6 Engine info request

[Okiki Olufokunbi]

Hello,

I am looking for some information on the mack E6 engine. I will like to buy a mack with an E6 Mechanical 12 valve engine (2 valves per cylinder). I have been reading that some E6 Engines may have 4 valves per cylinder head. Is this statement accurate?

What year macks R model or D models would carry the 12 valve all mechanical E6 engine.

Thanks

OO

[Macktech689]

The E6 4 valve head engine was produced between 1984 & 1989, any mack older than that should have a 2 valve engine. Going from memory here but that should be correct.

[farmer52]

FYI, all E6s were mechanical (2 or 4 valve). Early E7s could be both mechanical or V-Mac.

[Okiki Olufokunbi]

thank you MackTech and Farmer...

[sam-i-am]

looking for good running em6 4 valve also read that someone said em6 2 valve could be put in replace of 4 valve

[boyd]

The Carbon/Sludge build up was so bad on the 4 valve mack motors up around the valves and rockers, that if i had a choice i would have a 2 valve.. they where always so much cleaner when i tore them down... just my opinion