Is the LS* really this light?

[Demon-Xanth]

Taken from:
http://www.hsv.com.au/cars/vz/..._Series_drivetrain.pdf

"At around 180kg ready to run (without ancillaries) LS2 is considerably lighter than most V8 engines, irrespective of their design philosophy."

At 400Lbs, that would mean that the 6L Corvette engine (and presumably the 7L variant) is about the same weight as many 3.xL DOHC V6s that also feature aluminum blocks.

 

[Viper GTS]

Shh! You'll wake up the Honda fanbois!

The LS1 is/was an awesome engine, & the LS2 is no different.

Viper GTS

 

[Dulanic]

The LS1,2, and 6 engines are awsome engines. The LT1 was even a great motor, if not a little heavier.

 

[mAdD INDIAN]

yup its' true. That's why I keep on spreading hte virtues of the SBC. THe LS2 is lighter than the LS1 and its physically smaller than most V8s on the market.

That's why you see a lot of people putting Chevy small blocks into their cars (from RX7s and 240Zs to Miatas and 944 and such). It's a small motor so it can be place fairly back behind hte front axle and it some cases, its lighter than the engine it rpelaced. IT's a win win situaiton.

 

[Horus]

Originally posted by: mAdD INDIAN
yup its' true. That's why I keep on spreading hte virtues of the SBC. THe LS2 is lighter than the LS1 and its physically smaller than most V8s on the market.

That's why you see a lot of people putting Chevy small blocks into their cars (from RX7s and 240Zs to Miatas and 944 and such). It's a small motor so it can be place fairly back behind hte front axle and it some cases, its lighter than the engine it rpelaced. IT's a win win situaiton.

It would be TOTAL blasphemy to replace a B13 Rotary with a chevy small-block...it would kill the performance of the car.

 

[DougK62]

Originally posted by: Horus

Originally posted by: mAdD INDIAN
yup its' true. That's why I keep on spreading hte virtues of the SBC. THe LS2 is lighter than the LS1 and its physically smaller than most V8s on the market.

That's why you see a lot of people putting Chevy small blocks into their cars (from RX7s and 240Zs to Miatas and 944 and such). It's a small motor so it can be place fairly back behind hte front axle and it some cases, its lighter than the engine it rpelaced. IT's a win win situaiton.

It would be TOTAL blasphemy to replace a B13 Rotary with a chevy small-block...it would kill the performance of the car.

The RX7s with SBC swaps that I've seen have all been wickedly quick on the track. One guy locally has one and he dominates the Autocrosses. He says it's twice the car now than it was with the twin turbo rotary.

 

[mAdD INDIAN]

Originally posted by: Horus

Originally posted by: mAdD INDIAN
yup its' true. That's why I keep on spreading hte virtues of the SBC. THe LS2 is lighter than the LS1 and its physically smaller than most V8s on the market.

That's why you see a lot of people putting Chevy small blocks into their cars (from RX7s and 240Zs to Miatas and 944 and such). It's a small motor so it can be place fairly back behind hte front axle and it some cases, its lighter than the engine it rpelaced. IT's a win win situaiton.

It would be TOTAL blasphemy to replace a B13 Rotary with a chevy small-block...it would kill the performance of the car.

uh no...it would increase it.

Twin turbo rotaries aren't that light. I'm not saying that they are heavier than an SBC, they aren't (as far as I know), but they aren't that much lighter either.

The SBC would increase performance in every way. Better drivability, better power, better power curve, won't upset weight distribution, and its cheaper in the long run.

There's a reason why most people use the SBC was a replacement engine into their projects.

 

[MisterCornell]

Most Honda fans who brag about the HP/L "efficiency" of their engines don't understand that an engine's displacement is only one component (and a very small component at that) of the engine's total size. How big do you think 3 Liters is? It's about the size of a Coke bottle. If you've ever looked under the hood of a car, you would know than an engine's size a few orders of magnitude bigger than that.

OHV has a huge packaging efficiency over DOHC. GM's 6.0L LS6 is smaller than Nissan's 3.5L VQ engine. GM's own 3500 pushrod fits into the same space as their 2.2L Ecotec 4 cyllinder. DOHC engines have a lot of bulk, and are typically 1.5-2 times the size of an OHV engine with the same displacement.

 

[Apex]

The LS1 is 460lbs (Contact! issue 41, via Brian Knowles 12 Feb 2000), but not fully dressed. Fully dressed, it's in the mid 500's. It's definitely light compared to a typical V8, but not spectacularly so. What is impressive is the total package: weight, size, power, reliability, cost.

 

[mAdD INDIAN]

Originally posted by: Apex
The LS1 is 460lbs (Contact! issue 41, via Brian Knowles 12 Feb 2000), but not fully dressed. Fully dressed, it's in the mid 500's. It's definitely light compared to a typical V8, but not spectacularly so. What is impressive is the total package: weight, size, power, reliability, cost.

It's that heavy?? Thought it was lighter. The LS2 is lighter though, and I think the engine in the new Z06 (not sure the code for it) is even lighter.

I know hte VQ35DE is around 250lbs or so.

 

[Apex]

Originally posted by: mAdD INDIAN

Originally posted by: Apex
The LS1 is 460lbs (Contact! issue 41, via Brian Knowles 12 Feb 2000), but not fully dressed. Fully dressed, it's in the mid 500's. It's definitely light compared to a typical V8, but not spectacularly so. What is impressive is the total package: weight, size, power, reliability, cost.

It's that heavy?? Thought it was lighter. The LS2 is lighter though, and I think the engine in the new Z06 (not sure the code for it) is even lighter.

I know hte VQ35DE is around 250lbs or so.

Yeah, it is. The LS2 is a bit lighter (around 3-5%, depending on how compared). The LS7 is roughly the same weight (some weight saving components, other weight adding components).

The VG 3.0 is is 360lbs (Kennedy Engineered Products adapter catalog), and the VG 3.3 is 433lbs, both undressed. The VQ is supposed to be just a tad lighter than the VG 3.0, being all aluminum instead of aluminum & iron. I don't have any exact numbers though.

 

[Iron Woode]

Originally posted by: Demon-Xanth
Taken from:
http://www.hsv.com.au/cars/vz/..._Series_drivetrain.pdf

"At around 180kg ready to run (without ancillaries) LS2 is considerably lighter than most V8 engines, irrespective of their design philosophy."

At 400Lbs, that would mean that the 6L Corvette engine (and presumably the 7L variant) is about the same weight as many 3.xL DOHC V6s that also feature aluminum blocks.

That is almost the same weight as a small block mopar.


If you want to go better then the Buick 455 stage1 with an aluminum intake weighs the same as an iron small block chevy.

 

[dak125]

LT1 Dude up in here .

That new Vette has my name on it, this college degree better do me some good in a couple of years.

 

[Zenmervolt]

I'd still rather have one of the old L-88 427 Big Blocks... 560hp from the factory sounds pretty good.

ZV

(OK, so I'd actually rather have one of the _very few_ ZL-1 427 All-Aluminum Big Blocks. L-88 specs, but no cast-iron block to lug around. Of course, they only made 3 'Vettes with that engine. And one was destroyed as a prototype.)

 

[AgaBoogaBoo]

Originally posted by: mAdD INDIAN

Originally posted by: Horus

Originally posted by: mAdD INDIAN
yup its' true. That's why I keep on spreading hte virtues of the SBC. THe LS2 is lighter than the LS1 and its physically smaller than most V8s on the market.

That's why you see a lot of people putting Chevy small blocks into their cars (from RX7s and 240Zs to Miatas and 944 and such). It's a small motor so it can be place fairly back behind hte front axle and it some cases, its lighter than the engine it rpelaced. IT's a win win situaiton.

It would be TOTAL blasphemy to replace a B13 Rotary with a chevy small-block...it would kill the performance of the car.

uh no...it would increase it.

Twin turbo rotaries aren't that light. I'm not saying that they are heavier than an SBC, they aren't (as far as I know), but they aren't that much lighter either.

The SBC would increase performance in every way. Better drivability, better power, better power curve, won't upset weight distribution, and its cheaper in the long run.

There's a reason why most people use the SBC was a replacement engine into their projects.

How does it not upset weight distribution? It's a V engine so it has a higher center of gravity naturally