J_SIN

I bought an 03 Tahoe Z71 with a Whipple charged 5.3 but the engine was blown so I put an 03 6.0 in it without the Whipple. Now I'm ready to put it on, without the whippletronics, but I have a few questions I wasn't able to find answers for.

The billet water neck that comes with the kit was left on the old 5.3 I guess cause I don't have it anymore. Is there any other option for me to get a 90 degree neck for the water pump?

This Whipple has a 4-3/8" pulley on it. I found a thread on a Whipple 6.0 and there were posts about which sizes people were using but sometimes its hard to figure out who's actually talking about a 5.3 or 6.0 engine. If they were talking 6.0 then this pulley should build just about ZERO boost for me. Is this correct? If so, which size pulley should I use for a fairly safe (not too safe ) level of boost. I do plan on inter cooling if I can figure out a way to do a good setup (my next search on here).

Fuel pump and injectors. I think I remember reading a while back on here, something like an aeromotive 340 being one of the options, but I can't find the threads. Any recommendations? I see most recommend 42lb injectors without the whippletronics. Will 42lb still be fine with inter cooling or does that not make a difference? brand recommendations?

ZO6Ted

Only question I can answer. I would do 60's rather than want to change them again in the future.

Gordy M

iTrader: (2)

For the water inlet, try to put it on going the other way and using the radiator hose backwards, puting the radiator end on the water inlet. Its been a long time since I had my Yukon but as I recall that worked out very well. Also, I fabricated a bracket for the alternator to hold the hose.

J_SIN

I was looking around some more last night and realized the reason that billet neck is used is because of the piece that bolts to the manifold. If I can figure out an inter cooler that goes straight in to the manifold then the stock water neck might not be an issue.

kbracing96

iTrader: (26)

07+ truck water pump, the water neck comes out of the pump at a lower angle instead of out the top of the pump. Might work for you.

J_SIN

Sweet, thats kinda what I was hoping for. An OEM alternative. Thanks.

And just to add a little info that may help someone else later, I picked up my spark plugs today and the AC Delco Pro Platinums with GM part number 41-932 are now part number 41-993.

ramairracer

iTrader: (13)

i cut my factory pump neck to where its straight and its been fine for over 2 yrs, im running the 4" pully which is 5 psi on a 6.0 with 228 cam. and im on 42lb injectors with my own tune not the whippletronics

J_SIN

Good to know. What radiator hose do I use after I cut it down?

I found a 3.4 pulley, do you know how much boost that would give me? too much?

Razor

iTrader: (1)

IS this the Gen 2 top mount kit? OR side mounted kit?

J_SIN

Side mount

and where can I find more about your car?