ls6 intake swap write up
 

where should i start with this :playboy:

after doing some research and seeing numerous n/a 5.3's and 6L hp flatlineing around 5800 and slowly falling after 6k, i decided to take the plunge and do the ls6 intake swap. the ls6 intake seems to be a proven performed intake that pulls all the way to 6500 in modified engines (ei full boltons, cam, etc...)

stuff you will need to get the job done:

a nice set of various ratchets, sockets, wrenches, etc...
4" electric grinder. (grinding discs/ cutting discs)
fuel line disconnect tool
big 3 jaw puller
1.5 ft of 5/16" & 3/8" fuel line
1 5/16" & 1 3/8" barbed fuel line fitting
6 hose clamps for the hose sizes above
small diameter vacuume line
gallon anti freeze

parts for the job:

ls6 intake
ls1/ls6 intake bolts (can't use the truck ones, they are too short)
97/98 vette fuel rail (for 99 to 03 trucks) or 98 to 02 f body fuel rail (04 & up)
ls1/ls6 style injectors (i chose 28.8#'s b/c i needed bigger ones already)
ls1/ls6 injector pigtails summit part no. MSD-2400
ls1/ls6 water pump
ls1/ls6 map sensor
custom idler pulley relocation bracket (haven't made one yet)

bout to get started
http://i11.photobucket.com/albums/a1...e/DSC00381.jpg

removed the truck intake. alternator and p/s bracket removed also.
http://i11.photobucket.com/albums/a1...e/DSC00382.jpg

the fuel rail feed and return line will not clear the coil packs.
action: bend the lines upward to where there is enough clearance
http://i11.photobucket.com/albums/a1...e/DSC00389.jpg

notice how the fuel rail lines clear the coils
the coolant hard line nipple, needs to be bent out to clear the intake also
http://i11.photobucket.com/albums/a1...e/DSC00391.jpg

alternator and p/s bracket has to be cut in order to clear the throttle body since the ls6 intake sits alot lower than the truck one
http://i11.photobucket.com/albums/a1...e/DSC00392.jpg

http://i11.photobucket.com/albums/a1...e/DSC00395.jpg

the bottom of the tb needs to be grinded some in order to clear the top of the water pump.
http://i11.photobucket.com/albums/a1...e/DSC00398.jpg

new injector pigtails wired up. plug the vacuum line from the valve cover to the front passenger side nip on the intake. fuel pressure regulator line goes to small nip in back of the intake.
http://i11.photobucket.com/albums/a1...e/DSC00400.jpg
pcv line goes to the small nip in the back of the intake also. barbed fuel line fittings are used to connect the fuel lines. evap sensor tucked behind the alternator (use a vacuum line to connect it to the front drivers side nip on the intake)
http://i11.photobucket.com/albums/a1...e/DSC00401.jpg

final product. well not really since i have no welding machine/cutter to fab up the idler relocation bracket. driving around with 275/45/20's and no p/s sucks :bang: once i get one made up and put on the truck, i'll post up some pics of it. in the mean time yall can check out kano's write up for pics of the bracket.
http://i11.photobucket.com/albums/a1...e/DSC00408.jpg

http://i11.photobucket.com/albums/a1...e/DSC00409.jpg

if you see anything out of place or think more stuff needs to be added, just put in your input.

mods, feel free to add/move this to how to's if it's good enough.

vids:

engine idle

http://i11.photobucket.com/albums/a1...th_ls6idle.jpg

exaust idle/rev

http://i11.photobucket.com/albums/a1...ls6idlerev.jpg

Enjoy :chug:

good job lance..nice to see ya get it going again..you got any wot runs yet?

Why didnt you use the speartech bracket?

feeel any differenet?

thanks dude. not yet, still breaking in the converter. feels great though.
they don't make that bracket anymore, and i'd like to make my own b/c of costs.
sure does :judge:

if only i didnt have returnless.but im sure my intake is just fine for me.

What's up with the exhaust vid? The LS6 intake change your exhaust note? JFWY :)

They do make the bracket they just had a run of 90ish about a month ago;)

If I don't use my bracket, I'll sell it to ya.

James

About the injectors. I have the 8.1's (31# I think) and am still running about 90% IDC I think. is there any way to use the truck style injectors with the LS1/LS6 intake?