jrocstar

iTrader: (31)

i have been searching alot and am not finding the information i need. First off i plan on turboing the engine with a large cam and ported heads and most lekely forged pistons. is it worth it to go after the 6.0 over the 5.3 also what would you have to change to make either of these fit into a 00 firebird that had a six cylinder in it. i will be keeping my auto 4l60e trans beind it and plan on just buying the tubular k member built for v8's with extra clearance for turbo. any information is helpful

Carshopinc.com

iTrader: (5)

That 4l60e may be on borrowed time in that application, both engines with boost will be great but I would suggest building a 6.0. Both will fit in the bird.

themachasy

iTrader: (5)

I kind of agree... to a point. Really depends on your budget. I got my 5.3 for $292 shipped with 70k miles. I couldn't find a 6 liter for less than a grand. And honestly Ive seen a z06 cammed 5.3 put out 326whp on here which is pretty strong!

jrocstar

iTrader: (31)

i made more than that from my v6 the 4l60 is not stock at all and has seen 20psi outta my v6 without issues. i am looking for 600 to 700 wheel horsepower i think the 6.0 is a little more of a instant cost but the investment will pay off in the long run. when you look at a total picture of this swap of probably 5k extran 800 is not too much to ask for i suppose but if the 5.3 handles boost better or any other reason to choose it over the 6.0 i would like to hear the reasoning. if i did 6.0 what would have to be changed to make it bolt in besides driveshaft bellhousing and k member oh and torque converter

themachasy

iTrader: (5)

The 5.3s handle boost REALLY well. Look at Parrish with the turbo turd, that thing has run something silly like 9.90s on a junkyard 5.3 with a master power t70. Id just boost the 5.3!

sidewayz28

iTrader: (24)

whats did the 5.3 motor come out of? name of the engine?

themachasy

iTrader: (5)

Its from an 01 silverado 1500, pretty sure its an LM7 dont quote me on it, its been sitting in the garage for a while. Got it from LKQ.

Parrish's motor in the turbo turd is a junkyard motor they had sitting in the corner of the shop. Runs pretty damn strong, I'm sure he'll chime in sooner or later.

jrocstar

iTrader: (31)

yea if they do better than the 6.0 then i am all for them of course supposedly zzp and intense run junk yard bottom ends on their 9 and eight second 3.8l engines boosted and yet i found out how to break the crankshaft in half on a 57k mi motor

jrocstar

iTrader: (31)

does anyone have information or a link on the items needed to do the 5.3 swap with a 4l60e trans into a v6 f body hell figure into just a ls1 f vbody since i am getting the k member and will get the correct bell housing also where can i get the correct bell housing

Crowder

iTrader: (6)

the 5.3 are cheaper but the 6.0 have more potential with better heads from the factory. just buy the lq4 and dont look back

themachasy

iTrader: (5)

I don't see the logic. The L92 heads are great, but thats not on an lq4, the 5.3 heads are AMAZING ported and flow great stock. My only point is that for the money of an lq4 you could get your 5.3 AND a turbo. It made sense for me. If you get the lq4 you're looking at at least a grand for the motor, and then add in the turbo (if a master power or something) and the price goes up to $1700. I'm just calling it as I see it, I think you'll end up fueling the moneypit. I know how quickly money adds up in projects so I tried to keep my initial costs low because everything (especially in a turbo setup) always nickel and dimes you to death.

My $.02,
Josh

LS1Turbo

iTrader: (1)

correct me if im wrong but according to a gm source the 6.0l is nothing but a 5.3 bored over to 4'' it uses the same crank as the lq4. an other L series engines.
U could just buy a 5.3 bore it to 6.0l

Gil

Pop N Wood

iTrader: (1)

You're looking for 600 to 700 wheel HP and you are worried about the cost difference between a 6.0 and 5.3 pullout engine?

Maybe you should find a different hobby.

jrocstar

iTrader: (31)

lol well i have way too much into it already and i hate to be swallowed by the money pit again but it will probably happen i am probably just going to go with the 5.3 and just build it to run higher boost and rpm to equate the cost of the 6.0 but yea this hobby is rough for a 21 year old college student

jrocstar

iTrader: (31)

themachasy where did you get your engine for that cheap i am looking for a 5.3 complete with pcm and all to build

themachasy

iTrader: (5)

I got my motor from LKQ $292 shipped. I scooped up a Camaro PCM and harness on here for $150, a stock LS1 manifold for $50, and a used ls1 flywheel w/ ls6 clutch and pp for $60. Trying to keep it budget. www.car-part.com was where I looked. Ebay has some good deals, as well as the classifieds section on this site.

jrocstar

iTrader: (31)

thanks for the info

ryanvv355

iTrader: (17)

LQ4 gets my vote

jrocstar

iTrader: (31)

so if i went 6.0 route do i still have to change out the oil pan and intake manifold or do those fit and something else needed to be changed. five hundred for a motor and another six for these parts gets me close to just getting the 6.0

jrocstar

iTrader: (31)

and i mean 6.0 truck motor