For the Guys who run a 4L + blower

I'm curious if you guys running a whipple or KB that is 4L + are still using the stock lower manifold or if there is something better out there or is someone has any recommendations for porting.

Also, is there an upgraded inter-cooler you recommend.

The Kenne Bell BIGUN Intercooler is the only I/C upgrade that I know of on the market.

Here is a CFM "flow through" comparison on the KB website......

http://kennebell.net/products/super...y-cobra-jet-5-0-hi-density-core-intercoolers/

I believe there is a small amount of material that needs to be removed on the lower intake to take full advantage of the flow capacity of the KB BIGUN.



R

Fast Willy said:

I'm curious if you guys running a whipple or KB that is 4L + are still using the stock lower manifold or if there is something better out there or is someone has any recommendations for porting.

Also, is there an upgraded inter-cooler you recommend.

Click to expand...

The KB Bigun is your only choice, and yes some material needs to be removed to fit it in the manifold, no big deal.

As far as port work goes, there are definitely gains to be had there and by raising the bypass. I had 1320Junkie do mine, and he worked it over pretty good, put quite a few hours into it. Dyno comparisons show a +25HP and 1.5lb boost drop. You can contact him through FB if you're interested in details and pricing.

Also, J2Fabrication is doing a 1" flow mod. You send him your intercooler and he ports the inlet and outlet from .50" to .87". You get a billet end adapter and new flow tubes to complete the install. You can also send him your HE and he'll weld on some 1" ends. It's another good mod, definitely brings down IAT2s substantially.

http://j2fabrication.com/product/gt500-flow-mod/

I had the same mods done that RBB did, port job and and J2 flow mod. Routing the 1" hoses is a pain but looking at how much more volume the system will move is amazing.

That flow mod should be considered mandatory. Of course, cough!, I do like my 1.25" in/out

I have wondered in the past..........If the Ford/SVT engineers felt there needed to be an upsize in CFM flow between the 2007-2012 I/C and the 2013/14 I/C and the difference between those two oem blowers, how many owners are missing out on extra performance by bolting even a 2.8/2.9 or 3.4/3.6 (KB's and Whipple's) on their 2007-2014 GT500's? The jump to a 3.4 or 3.6 from the 2007-2012 or 2013/14 oem S/C is quite a bit, a much larger jump in blower size than the oem 2007-2012 to 2013/14.


R

I appreciate all the info guys. Unfortunately for me by build in for a lightning so when I try and source everything from there I basically don't get anything.

Currently building a full Ford GT motor 4v and going to put a LARGE blower on it and just don't want to pass anything up while I'm doing it.

Hey Weather Man, have any pictures of those big lines setup?

These flow rates have been posed before:

07-12 intercooler CFM is 995CFM

13-14 intercooler CFM is 1109CFM

KB BIGUN intercooler is 1232CFM

Thanks Catmonkey, these are all using the stock lower itself correct? Well with the needed trimming for KB unit.

Honestly I couldn't tell you. KB may have info on their website that might have more info, but I'm thinking this is just the intercooler in a fixture on a flowbench.

Catmonkey said:

Honestly I couldn't tell you. KB may have info on their website that might have more info, but I'm thinking this is just the intercooler in a fixture on a flowbench.

Click to expand...

^^^I believe that is the case also, the I/C's being sucked through instead of blown through.

R

In here: https://www.svtperformance.com/forums/threads/the-accidental-build.1092890/

I run a pnr trunk tank , with a 4.2 Kb , tank full of ice my ait's are 90-100 depending on ambient temp. i may do the big gun intercooler in this winter.

Hey weather man, did dB performance build you that lower setup? That looks sweat. Just read your entire building. GL with the new cams

Fast Willy said:

Hey weather man, did dB performance build you that lower setup? That looks sweat. Just read your entire building. GL with the new cams

Click to expand...

The lower was from department of boost.

EDIT: SPEC R manifold to be specific.

I’d like to see a REAL back to back test with the cooling mod. Same day / same temp / not adding a big tank with it etc ..
Years ago this mod was introduced to Lightning’s and showed very minimal gains

StangsfeverFOX said:

I’d like to see a REAL back to back test with the cooling mod. Same day / same temp / not adding a big tank with it etc ..
Years ago this mod was introduced to Lightning’s and showed very minimal gains

Click to expand...

If you didn't do the lines and better pump, I wouldn't think you would see much improvement.

Lines i can see yes. I run 7/8 on my setup for that reason.
For a test you could use stock lines , then put bigger lines on and see the flow difference.
The inner cooler it’s self can only flow so much..
I’m running the 7 gallon tank and rule 2000 internal pump, I’ll be buying the big gun intercooler, I’d like to flow test it compared to the stock one

StangsfeverFOX said:

Lines i can see yes. I run 7/8 on my setup for that reason.
For a test you could use stock lines , then put bigger lines on and see the flow difference.
The inner cooler it’s self can only flow so much..
I’m running the 7 gallon tank and rule 2000 internal pump, I’ll be buying the big gun intercooler, I’d like to flow test it compared to the stock one

Click to expand...

The input/output on the intercooler has always been the bottleneck, not the intercooler.

This is my car on the dyno this past summer at 735 RWHP. All my hose and fittings are 1.25" The car is fully warmed up with a couple of small hits before the main pull verifying a/f down low. No ice, just water with 2 bottles of water wetter. Went to a smaller pulley and high temp was 112F at 26 psi and 835 RWHP.

So do you have a test from before ? I’m at 90-110 with a kb 4.2 ..
Id like to see the testing done that shows inlet/outlet are bottle necks, with the Lightning’s the gains where minimal .. I’m not doubting the mod works , I’m doubting the fact people think it’s gonna drop the aits 20+ degrees. Or they say i dropped 30 degrees but i also did big line, trunk mount tank,big pump etc..