Best LS Motor

[hollywoodGU]

So the LS7 isnt a good engine to supercharge because the block is too thin?

[Milk 1027]

brain fart........ Or more like my brain fell out for a second.

[Mr. Wyndham]

Originally Posted by Milk 1027

the LSA is a V6

No smilies = not joking
typo possibility? 2%

Get your flame-suit ready... The LSA is the 560+hp powerhouse in the CTS-V....


Of those in your list, Hollywood, the strongest engine would be the LSX hands-down. That block is good to over 2000hp. Problem is...it's ONLY the block. The "LSX" designation is a heavy, overbuilt, ironblock version of the LS-series engine blocks. You just have to do everything yourself. Boring, heads, etc, etc, etc...

[Milk 1027]

Originally Posted by Dragoneye

No smilies = not joking
typo possibility? 2%

Get your flame-suit ready... The LSA is the 560+hp powerhouse in the CTS-V....


Of those in your list, Hollywood, the strongest engine would be the LSX hands-down. That block is good to over 2000hp. Problem is...it's ONLY the block. The "LSX" designation is a heavy, overbuilt, ironblock version of the LS-series engine blocks. You just have to do everything yourself. Boring, heads, etc, etc, etc...

Nevermind. Ignore my post. Too much studying today. Not thinking straight

[hollywoodGU]

SO the LSX is the best to start with but its not actually a whole motor.. and between the whole motors the ls7 is too thin to FI, the ls9 is basically maxed out, and the LS3 has the most potential? am i correct in saying this?

[Mr. Wyndham]

Originally Posted by Milk 1027

wait. So the LSA isn't a V6?

nooooooooooooo....it's closely related to the LS9. V8. Supercharged....lotsa power.

Originally Posted by hollywoodGU

SO the LSX is the best to start with but its not actually a whole motor.. and between the whole motors the ls7 is too thin to FI, the ls9 is basically maxed out, and the LS3 has the most potential? am i correct in saying this?

right on the LSX. right on the LS7. right on the LS3. That's the block that underpins all the other motors on your list. Potential? Hell yes!!

Unsure on the LS9, though. I don't mean to undermine anyone who's posted here...but there are engineers/mechanics who've stared in awe at the spec sheet for that engine. A memorable quote is: "That thing's indestructable!!" With no real supporting experience, I'm going to say that the LS9 will probably do 900hp with minor reduction in life expectancy.

Reasoning?
It's warrantied as-is with the standard 5yr/100,000 miles deal. So you know it's solid. It's also said to have been rigorously tested to 200,000 miles no problem. And everything inside is forged, with oil-squirters...etc....

[Milk 1027]

Originally Posted by Dragoneye

nooooooooooooo....it's closely related to the LS9. V8. Supercharged....lotsa power.

Yeah I messed up. I edited my post vvvv

Originally Posted by Milk 1027

Nevermind. Ignore my post. Too much studying today. Not thinking straight

[BowtieGuy]

You can't really say that the LS3 has the most potential, considering it's potential is basically the LS9.Yes there is more power to be had, but if you want all the "potential" out of an LS3, just buy the LS9. You get your forged bottom end and high flow everything, and at that point its all about swapping parts to find the best combination. Smaller pulleys, cams, heads etc. Now if you want a take no prisoners brute, than absolutely build your own LSX. Over 2500hp capability. I don't know who said building the rest of the motor was boring, but there are few things more fun. That's what I would do. If I had money and didn't mind breaking things here and there. Which I don't. All I need is money.

[hollywoodGU]

kinda off topic-ish but does anybody know if the ZZ 572/720R will fit??? And if so how much alterations will have to be made to jam it in there?

[spd98]

There will be plenty more potential found in the ls9. Also there are ls7's running the TVs blowers with over 700 rwhp with no problems. I know of a bigger one in the works.

Basically this is a stupid question. The LSx can go to the largest displacment so it will always have the most potential.

[Robert91RS]

LSX 454 is a complete motor and puts out 620 N/A HP, perhaps this is what you meant. And would IMHO be the strongest motor out of the box for the money. And the LS9 with bolt-ons and pulley could easily see 800hp.

[2SSRS@Gen5diy]

like i said go for this LSX 454

Both the Pontiac G8 GXP and the LSX454 crate engine from GM Performance Parts are new this fall. GM engineers figured there was no better way to highlight them than combining them in an intimidating street machine.

In factory form, the G8 GXP features a 6.2L (376-cu.-in.) V-8 rated at 415 horsepower (309 kW) and 415 lb.-ft. of torque (562 Nm), but the new LSX454 (part number 19166972) delivers 7.4 liters of unadulterated grunt. It cranks out 638 horsepower (476 kW) and 600 lb.-ft. of torque (813 Nm). The engine uses the LSX Bowtie cylinder block, new six-bolt LSX cylinder heads and an all-forged rotating assembly. Backing the LSX454 is the GXP’s Hydra-Matic 6L80 six-speed automatic transmission.

[rgrizzard]

I think you would be best suited for a Warhawk LS block, not GM.

[CamaroSpike23]

Originally Posted by BowtieGuy

You can't really say that the LS3 has the most potential, considering it's potential is basically the LS9.Yes there is more power to be had, but if you want all the "potential" out of an LS3, just buy the LS9. You get your forged bottom end and high flow everything, and at that point its all about swapping parts to find the best combination. Smaller pulleys, cams, heads etc. Now if you want a take no prisoners brute, than absolutely build your own LSX. Over 2500hp capability. I don't know who said building the rest of the motor was boring, but there are few things more fun. That's what I would do. If I had money and didn't mind breaking things here and there. Which I don't. All I need is money.

I think you misread Dragoneye... he said you have to do some boring and honing on the LSX block.... ya know, machine work. lol

Originally Posted by rgrizzard

I think you would be best suited for a Warhawk LS block, not GM.

a warhawk block would be pretty bad ass as well.

but the Iron LSX block wins for most potential. it can be bored out to 511 cubes. yes, that means a 511ci.... 8.3L small block. crazy stuff.

I'll have to look around, but I believe I posted a vid a while back of an LSX block bored out to a 454 IIRC, with twin turbos pushing around 12 psi that made 1200+ hp. and that was its break in boost setting, the plan was to run 25+ on it.