Single or dual plane intake?

[afroman006]

Awhile back I bought an intake from a hummer 6.2 on ebay and it turns out its a single plane manifold. Now, all civilian intakes I've seen have been dual plane. Since I now have one of each, which should I use? I figure since the 6.2 will have plenty of grunt for low end crawling, so I would like whichever manifold gives me a little better top end. This will be on a trail truck BTW.

 

[arveetek]

Go with the single-plane. Diesels don't respond to dual vs. single plane intakes as gassers do. Most of the dual-plane intakes were on C code engines with the EGR valve, and needed the extra spaces for the exhaust passages. The single-planes were used on the heavy duty J code engines. GM later did away with all dual-planes, I believe, and stuck with the single-planes. I have a single-plane intake on my engine right now.

Casey

 

[afroman006]

Well the dual plane that came on the engine does not have EGR but it sounds like I'll be going with the single plane. Thanks.