dec010974

iTrader: (1)

Wow. What happened to this thread? I'm afraid to give a response. Please don't shoot me, I'm just a messenger. @Toby Warford Lq9's are great. I had a very stout LQ9, bored .040, 228/288, .600/.600 110 centerline. This engine shredded the tires and loved 4500+ rpms. I had a few LM7's. I love these engines. 5.3's are the Most bang for your bucks. Most 5.3's will can eat SBC 350's with a simple cam swap and tune, cheaply. Last but not least, the most fun of all, the 4.8. The smallest puppy of the bunch. The 4.8, is very peppy. I loved the one I had(needs a rebuild). A good cam, a good tune, with open exhaust, and if you can afford it, later down the road, some port work or new cylinder heads, you will be amazed at how well they run. Dont shoot me, good luck with your swap. Clark.

Toby Warford

thank you. I know all about the lq9. Great engine. Main reason I don't want a 6L is transmission choices go down to either a slush box, or expensive 5/6 speeds. Like i said though, I just wanna do a 4.8 and be different. The 4.8 will work perfectly for me. Unless a screaming deal comes up on a 5.3 or 6.0, the 4.8 is what l'm set on. I just don't like doing what everyone else is doing. Unless the $ just doesn't make me. Which this case, the 4.8 is absolutely perfect for me.

Id just like to know what I can realistically expect with the few things I have listed.

1964SS

iTrader: (1)

We just did a 2002 5.7 LS1 with mild cam, LS6 intake and headers and made 349hp to the rear wheels through a T56 and 10 bolt so I would say you are in the ballpark.

JoeNova

4.8 and 5.3 pricing are very similar.
The power outputs are very close, with the 5.3 making more torque.
The fuel economy between the two is very close, within ~2 mpg in most setups.

For a truck, it makes more sense to go 5.3 for the part throttle torque.
In a lighter vehicle that will see more RPM, the 4.8 may make more sense.

I just finished a 5.3 with a mild Howard's cam and long tubes. 100% stock otherwise. Made 312whp through a 4L60e on a Dyno Dynamics (heart breaker dyno) through a 2" crimp-bend exhaust (1 5/8" in the bends). Same combo with 799 heads and TBSS intake made 426 HP on engine dyno. The total cost of the swap was $2500 including a rebuilt 5.3 top end, a completely rebuilt 4l60e, conversion to fuel injection, electric fans, etc. You could easily do it with much less depending on a few factors.

You MIGHT save $200 on the entire swap going with a 4.8.

Toby Warford

its really pathetic how many people either can't read, or their reading comprehension is very low.

For about the 5th time, I don't want the damned 5.3. the only way I'm getting a 5.3 is is a smoking deal come up on one.

The truck its going, and me as the driver and my end goals, is perfect for a 4.8. end of story.

If I wanna go all out power, I'll get an lq9 or maybe an L33 and throw my wallet at it. Then boost it if that's not enough. Then throw juice at it because why not. But thats not the objective here.

All I wanted to know was a simple question on what a combo would or might make. That's IT!! don't know why that's so hard for people to comprehend.

dec010974

iTrader: (1)

@ Toby Warford, build that 4.8. Its your project. trust me, it will fit the bill.

truckdoug

iTrader: (25)

wow nice thread you guys got goin

JoeNova

If you already know what you're doing, then do it and stop posting here. People are just trying to offer you solid advice to save you from having to learn yourself, and you're being a dick about it.

Toby Warford

no, they're trying to tell me that the 4.8 isn't worth building and the 5.3 is the better build. I already know what the engines make factory.

Once AGAIN!, I'm building a 4.8. all's I wanna know is what it might make when I get the mods done to it have listed.

If I wanted to know which engine to start with, I would have asked that to begin with.

Toby Warford

thanks. But apparently thinking outside the box or doing something different is a sin here. Lol.

Ach1992880

The guy wants to buy a 4.8 for $200 less than a similar 5.3 and wants to know if spending $700 on throwing a cam in it along with associated mods will make approximately stock 5.3 hp without the burden of additional torque. Why is that so hard to understand? Masterful trolling. Kudos to the OP.

pdxmotorhead

So other than the "its different factor" which I get,, I think the thing that makes a lot of folks twitch is economics, and the way most of us would go. Hmm.

I can't tell a significant difference in 4.8 vs 5.3 pricing (Iron block) in my area, they seem to roll out at 2k to 3500 for a dropout. Your not losing anything with the 4.8 (Well besides a little power)

SOo hopefully you get through the swap and we get to see how that works out, get rid of the dead weight on the truck and I could se it being a fun toy... Id even keep the 727 tranny and just kit it.. I've seen them behind BIG 401 motors and they seem to take it..save a little work as long as its the mechanical 727torqueflight which a Dakota may not be.. can't remember.

Toby Warford

show me where I said I wanted make stock 5.3 HP?

Toby Warford

i understand if I was going to the best build for the money, then ya 5.3 all day long. But then again, if I were going best build possible, I'd save money for for an lq9.

As far as transmission, I'll be going with a stick shift. Been too long since I've had a standard transmission, it's time and this would be the perfect thing to have it in. The Dakota's got a variation of the 727, though not nearly as strong.

LStang01

back on track guys.. heres a good little read.

make sure to read the whole thing for the surprise ending

http://www.hotrod.com/articles/hrdp-...g-bang-theory/








SPOILER:






-- They always read how strong these 5.3 are and kept hearing that quadruple digit power out of the junkyard so they want to put the stories to the test and figure out what the true limit of the engine was able to handle out the box. They took the stock engine well over 1k and when inspecting what the final failure was ( somthing to do with ignition if i remeber correctly its been awhile since i read it) they realized that the pistons were off. Sure as **** they had ended up doing the whole test on 4.8.

4.8 just likes to be revved more to make the power she likes to be ran up and past 7k

LStang01

holy hell!?! 2-3k for a 4.8 or a 5.3??? my god i hope they let you choose your favorite color lipstick and flavor of lube while your signing that away

Toby Warford

lol that's what I was thinking but I don't know anything apparently. For that price that better be an lq9 and the 4l80e with all the wiring and computers to go with it.

Project GatTagO

iTrader: (7)

Just depends on what flavor of 5.3L...I paid $2k for a LH8 with 386 miles on it. Gen IV aluminum block...Arguably the most desirable 5.3L variant.

Andrew

Toby Warford

Would you guys be more helpful and excited if I said f it and go with an L33/T56 combo?

dec010974

iTrader: (1)

Would you guys be more helpful and excited if I said f it and go with an L33/T56 combo? @Toby Warford, no i wouldn't. i wanna see this mini mouse 4.8 your gonna build. i know the power potential of 5.3.