4.8 LS pistons?

[ShawnBoyMoody]

Anybody got any laying around?

[MARTYROBBINS]

did you break it already ?

[ShawnBoyMoody]

Not yet. :twisted:

[jmd]

it has to make to at least one cars and coffee before you break it. lol

[ShawnBoyMoody]

it has to make to at least one cars and coffee before you break it. lol

Im tickled that you think its worth bringing out. Unless its a trick and you wanna see me get laughed out of the parking lot.

[ForceFed4g63]

:nx:

[94zson]

I have some in my Tahoe but it is currently using them

[ShawnBoyMoody]

I have some in my Tahoe but it is currently using them

You need a 6.0.

[Qwik_Sn95]

No u need a 6.0. Ur supposed to go bigger not smaller or did u not get that memo?

[ShawnBoyMoody]

4.8 pistons in a 5.3 = more compression. More compression = more powa.

[94zson]

You need a 6.0.

Hook me up

[LXtasy]

Do not think that I am bashing on what I am about to say. BUT, for the minimum amount of horsepower increase you will get and the amount of money/time to swap the pistons over. Why not just look elsewhere on trying to make more power. In theory all you will be doing is converting your motor to a 5.3 HO. Which stock for stock is only 25 hp more (flywheel)

[TurboWS6]

:nx:

This!

[ShawnBoyMoody]

It would increase the compression ratio by a full point. That equates to way more than any 25 HP. You are thinking in terms of a stock motor with stock heads and stock cam. It could also be done for the cost of a set of rings in "theory". Now, where else would you suggest I look for more power?

[LXtasy]

do you have electric water pump? Do you have any port work to your heads? Do you have a nitrous kit on it? Different cam.

I just feel that you will be pissing money in the wind by changing pistons out. PTV clearance would be an issue like always. I would hate to see a cheap set of pistons end up costing you more in the long run for minimum gains.

[94zson]

Hook me up

You need a 6.0.

Anyone?

[ShawnBoyMoody]

do you have electric water pump? Do you have any port work to your heads? Do you have a nitrous kit on it? Different cam.


:roll:

[Qwik_Sn95]

Yea I belive if anything punch that thing out and throw some LS1 pistons in it. I belive the .120 over bore will pick up more power then the bump in compression. I have to aggree with the above post though. Look for power elsewhere. I set of foggers will wake it up.

[ShawnBoyMoody]

Ugh.

[ShawnBoyMoody]

Let me rephrase this. Does anyone have a set of 4.8 pistons laying around? If not GTFO.

[LXtasy]

:roll:

Hey do what you want. I do not know what mods you have done to your car. So I was helping. Doesn't matter to me anyways as it is your money and you can spend it how ever you want

[ShawnBoyMoody]

Indeed. Go work on your junk.

[BAD BOB]

i got some 6.0 ones still in the block you can have?

[ShawnBoyMoody]

i got some 6.0 ones still in the block you can have?

How about the whole block? :mrgreen:

[adamcs]

I got some nitrous you can borrow

[ShawnBoyMoody]

I got some nitrous you can borrow

Thanks Adam. I actually have a kit lined up.

[adamcs]

I just wanna see you choot em

[LXtasy]

Indeed. Go work on your junk.

No need to. Truck is on back burner at the moment. Thanks for the offer.

[ShawnBoyMoody]

I just wanna see you choot em

You say that like you think I have reservations about shooting the piss out of it. I assure you I dont.

[ShawnBoyMoody]

No need to. Truck is on back burner at the moment. Thanks for the offer.

Go water your garden then.

[LXtasy]

How much money do you think you will have tied up into piston swapping? Honestly, trying to save you money. Go for it and I wish you the best of luck. But remember, I will say I told you so and you will not be happy at the lack luster results. No sense in helping someone who is close minded.

[BAD BOB]

i got some 6.0 ones still in the block you can have?

nah i dont think so. i may need it one day. i do have a whole 4.8 sitting at the shop but think i will hold on to it just incase i need another back up motor!

[ShawnBoyMoody]

How much money do you think you will have tied up into piston swapping? Honestly, trying to save you money. Go for it and I wish you the best of luck. But remember, I will say I told you so and you will not be happy at the lack luster results. No sense in helping someone who is close minded.

I type and delete, type and delete. I'm too nice. Thank you for your input.

[adamcs]

Im just sayin you have the back tire for life with the bmw

[ForceFed4g63]

I type and delete, type and delete. I'm too nice. Thank you for your input.

Lol! Shawn is keeping the peace.

[ForceFed4g63]

Im just sayin you have the back tire for life with the bmw

I'm not messing with that sleeper!

[adamcs]

I'm not messing with that sleeper!

Good move on your part lol

[schardbody]

i'm sorry but i agree with Hal. lets say you gain 6% which is more than typically gained from a point but you are cammed youre looking at around 20-25whp gain. granted it wont cost much if you only have to pay for rings gaskets and bolts but is it really worth it? to me it wouldnt be unless you are hell bent on keeping it N/A and squeezing every tenth out of it. with the intention of spraying it i dont think i could justify the swap.

[ShawnBoyMoody]

Dont be sorry. Nothing be sorry about.

[1998ta__1991rs]

for a dollar/horsepower stand point an electric water pump is a horrible idea, they are over $500 to get about 10 hp. Shawn I'll make some phone calls tomorrow and try to find some pistons, it would be easy to swap them out, plus you loosen up the rind gap a little to give you a little more on the gas

[ShawnBoyMoody]

for a dollar/horsepower stand point an electric water pump is a horrible idea, they are over $500 to get about 10 hp. Shawn I'll make some phone calls tomorrow and try to find some pistons, it would be easy to swap them out, plus you loosen up the rind gap a little to give you a little more on the gas

See what you can find kindest of kind sirs.

[schardbody]

for a dollar/horsepower stand point an electric water pump is a horrible idea, they are over $500 to get about 10 hp. Shawn I'll make some phone calls tomorrow and try to find some pistons, it would be easy to swap them out, plus you loosen up the rind gap a little to give you a little more on the gas

i agree, i guess its a matter of how bad you want that next tenth in the end and everyone will have a different opinion on what is worth it and what isnt.

[schardbody]

just for you!

http://i29.photobucket.com/albums/c276/schardbody/GSRej8/lsxswap.jpg

[Foose04]

Shawn, you looking for more power n/a mainly? If your just looking for power, I can get you in touch with a couple 5.3 guys spraying 250+ shots and keeping them happy. Get the tune right and let it eat.

[bwelch]

Just add 25 more hp's by pilling it up....change pistons after you burn a hole in one

[Derek]

Go water your garden then.

Lmao reading this as I water my garden this morning

[Rattletrap]

Anyone?
Come get it...and I would not run an oil pressure gauge on it.

[94zson]

Come get it...and I would not run an oil pressure gauge on it.

I'll give you a call over the weekend

[ShawnBoyMoody]

Yeah being that I was born 37 years ago and not last night Im pretty aware of the benefits of nitrous oxide. That said my car came from the factory sans nitrous oxide injection. Im aware that the benefits of doing the piston swap might be outweighed by the labor to most on this board, then again alot of the people on this board have been fiddle farting around with broke ass project cars for two and three years. Me, I don't play. I quit school cause they had recess. I really didnt say what my plans were with the 4.8 pistons, and I never said I was gonna go pulling the engine out of my car to swap pistons. I have another 5.3 at my disposal that I MIGHT do the swap on especially since we dont know anything about the motor and should probably take a look inside anyway. To answer the above quiestion yeah Im looking to improve N/A power because any increase in N/A power will still be there when I do get a kit. See I DRIVE this car. A 200 shot aint aint gonna do me a whole bunch of good on rivers ave. Lets not sell the little 5.3 short though. Over 400 HP at the crank aint too shabby for 190,000 mile motor that left the factory with like 280 HP.

[Kwiksilver]

All opinions aside... 25 horsepower for a couple hundred bucks is a pretty good investment. Lots of people pay way more than that. Besides with the fuel charge that he is stuffing down the neck of that 5.3, added to the extra compression he will net, I'll bet he would get more than 25 anyway. my .02... carry on

[Chillerman]

Shawn, I say go for it. It sounds like you might be building another motor anyways. I enjoy reading your posts about your next project on your quest for more power.

[oldskoolstang]

You can have my stock 5.3 pistons for spares......If i find any 4.8 pistons i will let you know.

[Foose04]

For your info, an L33 5.3 had this setup (flat top 4.8 pistons) from the factory in an aluminum block.

Good luck with what you decide on.

[ShawnBoyMoody]

For your info, an L33 5.3 had this setup (flat top 4.8 pistons) from the factory in an aluminum block.

Good look with what you decide on.

Being lazy here but what did those come in? BTW what I really want is your setup in my car!:cheers

[BigdaddyDupree]

NEW SILVERADO'S liike 07 up i think

[schardbody]

I don't think anybody was telling you not to do it.... I was simply giving my opinion and can definitely see every side. You seem to enjoy wrenching so go for it, I on the other hand wrench 55hrs a week and am a lazy bastard so my opinion differs....

I just want to see the freak run over the turtle.... no dislike towards anybody here just like the competitiveness y'all have going on...

[Foose04]

Being lazy here but what did those come in? BTW what I really want is your setup in my car!:cheers

If it was only that easy, it would be cool to see how far it carry those front tires!

Info on L33


The L33 (VIN code "B") is an aluminum block version of the LM7, and was referred to as the Vortec 5300 HO in marketing materials. Power increased by 15*hp (11*kW), to 310*hp (230*kW), over the LM7, and torque was unchanged. It was only available on extended cab 4WD pickup trucks. Only 25% of trucks made in 2005 had the L33 engine.

L33 applications:
2005ÔÇô2007 Chevrolet Silverado 1500 4WD
2005ÔÇô2007 GMC Sierra 1500 4WD