84CUCV
3/4 ton status
replacing a pump. need to remove the intake. anyone know about this one?? any better flow? thank guys
CK5
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what is this intake from?
- Thread starter 84CUCV
- Start date
That's a later model J code intake for a 6.2 or 6.5...the earlier J codes were split plenum, the later ones were open like yours. It'll be a direct fit for our trucks 6.2's as the air cleaner studs are oriented the same direction. The Hummer H1 studs are oriented 90 degrees to what you have.
What are you looking to get for that?
Rene
What are you looking to get for that?
Rene
84CUCV
3/4 ton status
was wondering if it flows better thats all need to take off the intake anyway
It'll be the best flowing stock intake. Second is the earlier J code and last of course is the EGR C code intake.
To get the most out of you should use a carbide burr meant for aluminum and gasket match it. My J code the casting was pretty poor to be honest. There were several runners I had to remove 1/4" or more from one side and up to 1/8" from the top and bottoms to match them to the gaskets. When I laid the gaskets on the engine there was little to no mis-match.
I would guess that increased it's max flow by about 20%...whether or not the engine needed that much more air I don't know but I always felt it had gained some power, and for a 6.2 it felt pretty snappy.
Rene
To get the most out of you should use a carbide burr meant for aluminum and gasket match it. My J code the casting was pretty poor to be honest. There were several runners I had to remove 1/4" or more from one side and up to 1/8" from the top and bottoms to match them to the gaskets. When I laid the gaskets on the engine there was little to no mis-match.
I would guess that increased it's max flow by about 20%...whether or not the engine needed that much more air I don't know but I always felt it had gained some power, and for a 6.2 it felt pretty snappy.
Rene
84CUCV
3/4 ton status
wow good to know thanks rene
I have the exact same intake on my 6.2. Might of even come from the same place.....some guy won a random auction that a whole bunch of these new intakes still in the box with parts tags on them.
However, they are not a 100% direct bolt-on.
You will notice the two mounting feet cast onto the upper rear intake runners that are not present on the older 6.2's. Not sure but I think they were there to hold the big plastic cover over the intake found on the 6.5 turbos. I had to cut/grind both off as they interfered with the vacuum pump. I also had to grind a little bit off the front edges where it seats up around water pump/t-stat stuff.
Not a big deal, but took me much longer because it was a lot of "why won't this thing seat all the way down" moments.
I also gasket matched the intake just like mentioned above. Also had to drill out the mounting holes in order to get the bolts in as mentioned in the sticky article, but doesn't sound like that is unique to this particuliar style of intake.
However, they are not a 100% direct bolt-on.
You will notice the two mounting feet cast onto the upper rear intake runners that are not present on the older 6.2's. Not sure but I think they were there to hold the big plastic cover over the intake found on the 6.5 turbos. I had to cut/grind both off as they interfered with the vacuum pump. I also had to grind a little bit off the front edges where it seats up around water pump/t-stat stuff.
Not a big deal, but took me much longer because it was a lot of "why won't this thing seat all the way down" moments.
I also gasket matched the intake just like mentioned above. Also had to drill out the mounting holes in order to get the bolts in as mentioned in the sticky article, but doesn't sound like that is unique to this particuliar style of intake.
84CUCV
3/4 ton status
thanks hope to get it soon
