Hart_Rod

iTrader: (3)

I'm needing help picking and LS engine. I have a 68 C10 with a 383 stroker and a Vortech V2 supercharger (turbo 350 tranny). The engine dyno's 631TQ/622 HP at the flywheel.

Build link:
http://67-72chevytrucks.com/vboard/s...d.php?t=358692

Motor link:
http://67-72chevytrucks.com/vboard/s...d.php?t=370973


It is really fun to drive, but I'm a fuel injection guy at heart and I want to upgrade to an overdrive tranny (4.11 gears). Soooooo, I'm trying to decide between these two engine/tranny combos to put in my truck:

Engine #1: 2009 Pontiac G8 6.0 engine with 16K miles, $5800.

Engine #2: 2011 Chevy 6.0 truck motor out of a 3500 (LY6/L99) with 700 miles, $6300.

EDIT: Engine #3: 2013 6.2 from Camaro SS (also with a 6L90E tranny) 135 miles $$$$$ .....

Both motors come complete with 6 speed autos and all accessories (price includes shipping). I have a TVS1900 Magnacharger that I will be putting on top of what ever engine I end up with.

Before I spend that much money I would love to hear everyones opinions, pro's, con's. Fire away and thanks in advance!!

Zfan

Either one will work, the low mileage is nice too. You going to delete the DOD and VVT?

RTBenny

I'd personally pick up an older 6.0 iron block and 4l80 for way less than either. Seen a 70,000 mile combo like this for 2 grand a few days ago on CL.

Hart_Rod

iTrader: (3)

I'm assuming both engines have both? I would remove the DOD, not sure about the VVT yet.

I thought about going that route, but do not want to hassle with rebuilding anything and I really like the idea of the 6 speed. Plus, I need the square port heads because that's what my supercharger is set up for.

Blackpanther99

iTrader: (8)

Well what I would do is buy a used LQ4 for FI lol but I would do the 6.0 from the G8 with the 6speed tranny.

Blackpanther99

iTrader: (8)

Btw awesome truck!

cam

iTrader: (9)

Sweet truck! Id go for whatever one is easiest fitment with regards to accessories and the SC set up you want. Ditch AFM, VVT is good but harder to tune.

1989GTA

Engine #2 and ditch the DOD and VVT. You have a supercharger so the VVT won't be needed. If it was NA I would say keep the VVT.

Hart_Rod

iTrader: (3)

Thanks!

Fitment will be the same for either engine. I have a Magnacharger TVS 1900 for square port heads, so it will work on either engine.

Is that because it's an iron block instead of aluminum? Why would the supercharger preclude using the VVT? I apologize for all the dumb questions, I'm still trying to figure out the differences between all the LS engien variants. As of right now, the big difference seems to be the aluminum block of the G8 vs the Iron block of the LY99. Does anyone know if the cam of either one of these will work better with the supercharger? Thanks in advance.

EDIT: I'm going to throw a 3rd engine in here, a 2013 6.2 from Camaro SS (also with a 6L90E tranny).....

1989GTA

"Why would the supercharger preclude using the VVT?"

The VVT changes the cam timing so the volumetric efficiency is better at lower rpms while still maintaining good horsepower numbers at high rpm. With a supercharger forcing the air into the chamber you don't need it. So keep it simple. Just pick the right camshaft for your setup. The iron block is a little stronger plus it has lower milage for just a little more money which was the main factor in my choice.

Now that you have brought in the L99 motor that complicates things. That is essentially what I am putting in my 1965 Buick Skylark.

Anthony Williams

iTrader: (3)

Sell your old motor and SC Buy the truck motor and trans, Cam it - Head it - Tune it and never look back..

Hart_Rod

iTrader: (3)

Roger that on the VVT. LOL at the L99, it would be sweet, but more $$$$....

I hear that! I think I have it sold and am leaning towards the truck motor. It doesn't have AFM, so one less thing to worry about.....

Hart_Rod

iTrader: (3)

Does anyone know a guestimate of how much it would cost (part/labor) to delete the AFM and VVT?

96capricemgr

iTrader: (1)

Why don't I muddy the waters further and say get an older LQ4 with 4L80E and put the Vortech on that.

Hart_Rod

iTrader: (3)

I thought about that, but one reason I want to pull the Vortech out is because I don't like the amount of noise it makes:


http://s852.beta.photobucket.com/use...65363290758454

Ok, well after a lot of thought and questions, I'm going with the 6.2/6L80E out of the Camaro SS. I think this will be the best bang for the buck and allow for some good upgrades in the future. I plan on deleteing the AFM and the VVT, anyone have an idea on the the cost of that? Also, I would like to change the transmission output shaft to allow for a regular driveshaft yoke, anyone have a cost on this upgrade? Thanks in advance!

sreve

iTrader: (3)

Thats a nice truck. I'm a fuel inj guy too but I could drive that thing.

LT1 - T56, Paint and 4:30 gears?

Hart_Rod

iTrader: (3)

Thanks! How about L99/6L80 with a TVS1900 Maganacharger??!!!

Ok, I picked up a 2013 L99/6L80E out of a Camaro SS with only 135 miles! (pics to follow) I have a couple of questions, where should I purchase the AFM/VVT delete from as well as the cam? How much is the factory cam and lifers worth? How much is the complete intake worth with all the injectors? Once again, only 135 miles, . Thanks in advance.

WHISKEYTRIP

Hey Rob!

Congratulations on the motor/trans purchase! I think we are in for a fun ride!
Hopefully we can meet up once both swaps are done.

John