CamaroRick

iTrader: (24)

I bought the edelbrock 3847 elbow for my single plane intake. I am porting it to gain some more flow out of the tight bend. In the back if the elbow there is a speedbump on the roof. Should i port it out or use it?

heres what i have so far, ported the 4150 flange to match my sp 4150, lots of metal removed to do this. removed some material from the floor and back roof of the bend.

SIC LSX

iTrader: (10)

looks great! I was going to run that setup, but i think i will just run a 1000cfm TB on top of the intake! I have Seen people picking up 30whp over that setup.

CamaroRick

iTrader: (24)

for anyone that may want to know, I was told by edelbrock that the "speedbump" is extra material to bulk up the intake so you can grind on the outside of the intake elbow for cowl clearancing. And the divider is for proper air distribution to the front runners. Today I finished up the elbow (removed allot of material) and started on the intake runners. I might finish up the intake saturday, I will have to post up some pictures.

Dark Shadow

is that the manifold from GM?

if so did they drill out for the injectors or did you?

CamaroRick

iTrader: (24)

its the gm manifold the injector bungs were pre drilled from gm. Aaron from intake elbows welded the fuel rail brackets on.

njc.corp

Aaron sure does nice work-

looks neat-

how long till its up and running-

what are your power/trq goals?

Thanks

dlove

iTrader: (23)

a 92mm TB flows about 1200-1300cfm

If you dont want an adapter I would get the biggest 4150 flanged tb you can. Otherwise you need a 4150 to 4500 adapter which will put the TB into the cowl.

hookemdevils22

iTrader: (12)

Is this an option, to have them pre-drill and tap the bungs? I know they offer a "carb-style" intake with bungs for fuel injectors or nitrous, but i didn't know they were drilled and tapped already.

Have you run the setup yet? How do you like the manifold? I'm looking at the same for my LQ4/L92.

CamaroRick

iTrader: (24)

looking for 500hp/470tq
http://www.sdparts.com/product/25534...IMachined.aspx ready for fuel rail brackets to be welded on, intake is already drilled for the injectors

CamaroRick

iTrader: (24)

the elbow was designed to work with either 3 bolt tb's and a 4 bolt tb. The lower holes for the 4 bolt were incorrect for a standard ls3 throttle body. I took the elbow to a welder to fill in the offset holes, then i redrilled the bottom holes and installed time serts for strength, last I chopped off the top bolt hole for hood clearance. Worked on it till 12:30 thursday got the fuel plummed and intake on the car. Now i gotta get the new injectors dilaled in with a dynotune

CamaroRick

iTrader: (24)

My tuner has it on the dyno, he said its getting around 90 kpa at wot , i wonder if its because my fitting for the map sensor is right in between 4 and 6 intake runners. or because its tee'd with a pcv hose. I should probably mount it in the elbow
info:
Running an LT1 k&N with 85mm maf to stock lt1 elbow and 90mm tb.

jason02Z

iTrader: (10)

incase you dont know or figured it out, you have to cut that divider out.. i bought that same set up and know some one who used it on his 408 and lost 90hp over the aluminum elbow.. im FI so i jut cut that out of mine and it works fine for me.. slowhawk performance built the 408 and ran and idled lean and hot on the center cylinders or something. it must swirl the air around the wrong ways.

CamaroRick

iTrader: (24)

Woops Jeff pointed out my screw up. after a long night of installing the intake and drinkin beer, i installed the map sensor in the same vacuum line as the vacuum side of the pcv breather. It was screwing up my map sensor readings. He had it on the dyno with the pcv unplugged and said its reading around 96kpa.

I was told by edelbrock to go to town porting it but not to cut out the divider because it will cause the front cylinders to starve for air.

CamaroRick

iTrader: (24)

lost 8/10 hp accross the board, but picked up at 5500rpm to 7100 peaking at 503rwhp@6900.
now i got someelectrical problems with the cutout. some reason my wire 6inches from the actual cutout melted and blew the fuse. damnit. I was messing with it but it got too damn dark out to make any repairs. its got a rats nest of wires under the console from a long time ago(nitrous kit) that i need to clean up. and rerout the pcv line. Its always something

still gotta get an electric wp, ditch the single 3" catback for dual, get true 90mm on the intake/air cleaner side.