Anyone ever swap out the stock intake manifold for a sheet metal or other aftermarket intake? if so.. how did it go.. anything else you had to be buy? any pics...?


Found a ton of intake manifolds on ebay!!

 

Never heard of it. I guess you could probably go with a FAST manifold. Was always popular in the GTO crowd with the LS2.

 

I was researching this exact thing. Does anyone know the part numbers for a complete intake manifold? Fuel rails, injectord, etc

 

http://www.fuelairspark.com/fas/inta...102mm-manifold

Doing a quick search, maybe those would work?

 

Sheet metal manifolds and the like are to help high RPM power, not really where the H2's like to work.

There are differences in ports for the Lq9 versus other LS based engines too. High performance type heads have a cathedral port, LQ9 is oval. Different injectors and rails and even a difference in throttle bodies.

See this article: http://www.hotrod.com/how-to/engine/...s-small-block/

What are you trying to accomplish?

TH

 

FYI... the h2 hummer has a lq4 engine aka vortech 6000... the lq4 and the lq9 are both cathedral head port design ... your info is wrong ... The chamber CC's are the same in both heads... the only difference is the compression.. which are in the piston design... These are the same heads with the same casting number.. same valves.. same port sizes.. same springs.. same everything... The LQ4 and LQ9 heads are the same.


To make power with a small cubic inch engine .... you MUST spin the rpm's!!! FACT..

 

I was just wondering if anyone swapped it out with an aftermarket intake ... that fast intake is a pretty good intake .. the stock intake is plenty for what I need .. but im going to be putting a set of GM cnc'ed heads with a custom tow cam .. come spring.. might as well get an intake too lol

 

I stand corrected, I have LQ9 on the brain for some reason.

I guess my point was that a sheet metal intake will do nothing for the H2 down low rpm.s. If you have some way to spin it higher, more power to you. Mine lives under 2000 rpms most of the time.

Tim