Houston Texas newb

[txarkitekt]

OH SNAP! Effin badass cars mayne!!!!

The LQ9 had stronger piston rods and bolts, along with flat top pistons, which result in the higher CR numbers. The LQ9 can easily handle 8-10 psi. But if you are only going 8-10 psi, why go twins?

The 5.3L would respond well to FI too. You could save the $$$ on the 6.0L swap and use it for modding the 5.3L and get a nice LVL 5 tranny to back it up--cause the stock 4L60e is not going to like 8-10 psi at all. But with either motor, I would definitely go with all supporting bolt on mods with a nice turbo cam to get the best output. As for the intake...I would keep the stock truck intake--cause if you go the LS1/LS6 route, you will need to do the LS1 style accessory brackets to make it all work with the shorter intake.

[r.barn]

Sure nice single would work too. Sometimes its just easier to stick
two small turbos in than one large one with big down pipe.

Was thinking might try and stick couple of internally wastegated
Super-60 T3's hanging off stock manifolds down by the bell housing.
Little small for the application, but not trying to make crazy power
past 6,000 rpm either.

Just a street SUV so no worries on them being exposed to anything
too bad, and use a small oil return pump to pump oil back up into the pan.

Might just boost the 5.3, just seen some good deals on low mile
LQ9's all the time and figured it'd be good way to beef-up the engine
and pick up hp with relatively easy swap.

If did a cam swap on the 5.3, will it still pass emissions ?

[TurboMic]

welcome

[txarkitekt]

Sure nice single would work too. Sometimes its just easier to stick
two small turbos in than one large one with big down pipe.

Was thinking might try and stick couple of internally wastegated
Super-60 T3's hanging off stock manifolds down by the bell housing.
Little small for the application, but not trying to make crazy power
past 6,000 rpm either.

Just a street SUV so no worries on them being exposed to anything
too bad, and use a small oil return pump to pump oil back up into the pan.

Might just boost the 5.3, just seen some good deals on low mile
LQ9's all the time and figured it'd be good way to beef-up the engine
and pick up hp with relatively easy swap.

If did a cam swap on the 5.3, will it still pass emissions ?

It would be 10x easier to do a 67mm on a FMT setup on the passenger side...a lot of room, easy to run a 4" DP in that area, plus it is all under hood--easy to install and get to when needed. You can also reuse the existing pass manifold and turn it upside down to mount the flange. Putting twins underneath would be a PITA..IMHO. The only advantage I see is to keep the temps down from it not being under the hood. But with your turbo experience, I am sure you will have a nice setup with it.

Well, if you can find a good deal on a 6.0L, then take it. But if you don't--throwing some mods and boost on the 5.3L would put down some good numbers. Yeah, you can pass emissions. Once you do the cam, you will need a custom tune. And once evrything is tuned, you will have no issues getting your inspection down there in Harris County...

[r.barn]

Yeah, I may just build simple single for the 5.3 and have some fun.

You can pick up cheap but decent Master Power T-70 for like $650

Bet I could fab a single kit using stock driver header, crossover under trans
and simple log header on the passenger side for well under $2,000.

How much will a rebuild on the 4L60 cost to hold some real power ?