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Old 03-25-2009, 09:26 PM   #1
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LSA crate engine?

can the LSA be ordered as a crate engine? It would be nice to swap out for that then sell my LS3 bc it would be able to handle higher boost probably!
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Old 03-25-2009, 09:35 PM   #2
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can the LSA be ordered as a crate engine? It would be nice to swap out for that then sell my LS3 bc it would be able to handle higher boost probably!
it does not have forged pistons. I'd be worried about turning up the boost at all in that thing.
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Old 03-25-2009, 09:51 PM   #3
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Dealership Markup?

Hey, If you just ordered from a dealer... did you pay a premium for early ordering. I went to a dealer two days ago and he said he wasn't selling anything for less than 10 thousand dollars over sticker. He says I won't be able to get one for sticker price for a year maybe, "Until the 'New' wears off." Did you have to put up with this crap too?

This GMPP catalog says the LSA is the engine for the Z-28, not the LS9, but both use the 6.2L engine block same as the LS3, except I think the LS9 is cast differently by process. So if you want, instead of selling your whole LS3 you could modify it with new forged internals, cam (which your swapping anyway you say) and maybe check to see if you will need new heads, then add the supercharger. If your not going to boost it up to 600HP like the LS9, then you may get away with using the same block and see if its cheaper than the whole new engine. but if your going to get a whole new engine anyway, the LS9 is more powerful, very similar, and the LSA has a wimpy camshaft with low lift, to provide "Cadillac's signature quietness and refinement." It's all up to you if you have the money, but you may not have to swap the entire engine. Make sure you have a buyer for the old engine first. Don't get the LS7 if your going to Boost it, though, Chevy tried and the walls were too thin to hold the pressure, due to the larger bore, so that's why they went with the 6.2L instead of 7.0L. There's a ton of GMPP engines available, and some may not be street legal.
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Old 03-25-2009, 09:55 PM   #4
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LSA Hypereutectic aluminum vs. LS9 forgesd aluminum.
LS9 made with specially cast Block will hold up to more boost.
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Old 03-25-2009, 11:15 PM   #5
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those dynographs on the pics are retarded.
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Old 03-25-2009, 11:43 PM   #6
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Nice ... any price on these engines ?
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Old 03-26-2009, 06:46 AM   #7
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List price on the lsa is 20k
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Old 03-26-2009, 10:25 AM   #8
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those dynographs on the pics are retarded.

The torque line is way off. It's almost like it's backwards.
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Old 03-26-2009, 11:53 AM   #9
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The torque line is way off. It's almost like it's backwards.
I think whoever made those graphs had no idea what they were really supposed to look like. It was probably some graphic designer who only had a dynograph with only the hp graphed out and completely guessed what the tq would look like. I would be PISSED if I bought an LS9 and found out it only made 200 odd tq at 4000 rpm LOL with that tq at 6600 rpm, the car would be at about 755 hp!
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Old 03-26-2009, 12:51 PM   #10
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Aren't the LSA and LS9 blocks the same save for larger bolt holes in the LS9? I could've swore that was the biggest change. I know they both have the piston squirters, but I thought all newer 6.2L blocks from '08 and up are cast the same with the same heat treatment, with the one exception being that one element from the LS9...

I think I'd like to see if one could get a couple more pounds of safe boost out of that LSA. I'm sure those hyper' pistons are better suited to boost than the stock LS3s, but I'm sure one couldn't go to radical.
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Old 03-26-2009, 12:55 PM   #11
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I would build a heads/cam car before I wasted my money on the LSA. You can easily meet that 550hp range with heads/cam...Now add exhaust and intake, and you will have more flywheel HP than the LSA.
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Old 03-26-2009, 02:30 PM   #12
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Aren't the LSA and LS9 blocks the same save for larger bolt holes in the LS9? I could've swore that was the biggest change. I know they both have the piston squirters, but I thought all newer 6.2L blocks from '08 and up are cast the same with the same heat treatment, with the one exception being that one element from the LS9...

I think I'd like to see if one could get a couple more pounds of safe boost out of that LSA. I'm sure those hyper' pistons are better suited to boost than the stock LS3s, but I'm sure one couldn't go to radical.
I'm sure it can take a couple more #'s, but I would be disappointed if I bought an LSA and was limited to only 550 rwhp.
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Old 03-26-2009, 02:43 PM   #13
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I think the torque curves are probably accurate.
1) Im fairly certain GM reviewed the listing prior to publication, especially for 2 high profile engines.
2) they closely match each other at the low end
3) its basically an LS3 block + goodies, however the LS3 is 10.7:1 compression, the LS9 and LSA are both 9.1:1 compression
at low revs the S/C isn't pushing that much air in

LS9-SAE it looks steeper because the torque side values are half the HP values

Last edited by Mythic; 03-26-2009 at 03:08 PM.
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Old 03-26-2009, 03:07 PM   #14
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I think the torque curves are probably accurate.
1) Im fairly certain GM reviewed the listing prior to publication, especially for 2 high profile engines.
2) they closely match each other at the low end
3) its basically an LS3 block + goodies, however the LS3 is 10.7:1 compression, the LS9 and LSA are both 9.1:1 compression
at low revs the S/C isn't pushing that much air in
You shouldn't post about things you don't know.

Do you know how a roots/screw-type blower works??? Boost is made basically off idle. MY CAR makes WAY more tq than that at the same RPM and it does not have anywhere near 638 hp, let alone 550+ like the LSA.

Not only that, do you know how hp is even calculated??? (TQ / 5250) X RPM = HP.

600 tq @ 6600 (as they have in the pic) equates to over 750 hp! Do you see 750 hp on that graph??


Those graphs are OBVIOUSLY errors.
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Old 03-26-2009, 03:25 PM   #15
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I'm sure it can take a couple more #'s, but I would be disappointed if I bought an LSA and was limited to only 550 rwhp.
Now, if I started with an LSA in the car, and made 550 RWHP in the car with some minor bolt-ons I know your 4.6 likes, then I'd be happy. However, shelling out all that $$$, then spending more money and only making 550 would not be cool. If the ZR1 only (I say that very loosely) makes about 500+ RWHP, I'm sure that LSA is only (again - loosely) good for 450. I'm just looking for about 550 at the tire and would be super happy with that, and if I could add shorties, a catback, pulley, tune, and CAI, I'd be completely happy with my setup. I want to stay legal where I am and I'd have no problems sportin' these mods'. But, like you said, if I were limited to 550, I wouldn't be too happy. Hopefully someone will come out with that modular pulley set-up like you guys have on your cars. That would be pretty dang cool.

Quote:
Originally Posted by THE EVIL TW1N View Post
You shouldn't post about things you don't know.

Do you know how a roots/screw-type blower works??? Boost is made basically off idle. MY CAR makes WAY more tq than that at the same RPM and it does not have anywhere near 638 hp, let alone 550+ like the LSA.

Not only that, do you know how hp is even calculated??? (TQ / 5250) X RPM = HP.

600 tq @ 6600 (as they have in the pic) equates to over 750 hp! Do you see 750 hp on that graph??


Those graphs are OBVIOUSLY errors.
Easy now. It could be he mis-spoke.

Respectfully...
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Old 03-26-2009, 04:16 PM   #16
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Hey, If you just ordered from a dealer... did you pay a premium for early ordering. I went to a dealer two days ago and he said he wasn't selling anything for less than 10 thousand dollars over sticker. He says I won't be able to get one for sticker price for a year maybe, "Until the 'New' wears off." Did you have to put up with this crap too?
If you get that again, remind him that GM is a stones throw from broke, and they can use all the sales they can get. Hes totally at a disadvantage right now.

And as for this discussion, couldnt you more reliably just go through an aftermarket company? If its costing this much just to get that engine, go with a professional. Like Lingenfelter or Henessy.
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Old 03-26-2009, 06:21 PM   #17
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ya, i was a little harsh. It's just very obvious it's a typo, and not anything that can be seen as a good refrence, even if it is from GM. This stuff happens.
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Old 03-26-2009, 08:40 PM   #18
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LS9 Dyno from the SAE
http://media.gm.com/us/powertrain/en..._LS9_ZR1_n.pdf

LSA Dyno from the SAE
http://media.gm.com/us/powertrain/en...LSA_CTSV_n.pdf
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Old 03-26-2009, 10:09 PM   #19
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You guys are rough LOL.
Yeah it appears as the graphics are wrong.
The numbers are fine.


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Old 04-01-2009, 07:03 PM   #20
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Quote:
Originally Posted by radz282003 View Post
Now, if I started with an LSA in the car, and made 550 RWHP in the car with some minor bolt-ons I know your 4.6 likes, then I'd be happy. However, shelling out all that $$$, then spending more money and only making 550 would not be cool. If the ZR1 only (I say that very loosely) makes about 500+ RWHP, I'm sure that LSA is only (again - loosely) good for 450. I'm just looking for about 550 at the tire and would be super happy with that, and if I could add shorties, a catback, pulley, tune, and CAI, I'd be completely happy with my setup. I want to stay legal where I am and I'd have no problems sportin' these mods'. But, like you said, if I were limited to 550, I wouldn't be too happy. Hopefully someone will come out with that modular pulley set-up like you guys have on your cars. That would be pretty dang cool.



Easy now. It could be he mis-spoke.

Respectfully...

shorty headers will get u absolutaly no hp gain. gm has been designing exhaust manifolds that are equal to or better then any aftermarket shorty. so spending money on shorty's is a waist unless u want the bling factor. now i know u live in cali, as do i. and with an aftermarket s/c like a TVS, a good intake exhaust system and maybe a small cam will get u to ur goal without having to spend money on shorties. now a cam is already illegal in cali. ur best bet is just go ahead and get some LT's a catted x pipe, dont drive 60mph in first gear around town. if ur worried about smog. find someone who will over look visual, there are plenty of smog shops that will overlook visual inspection, as long as u have cats theyre happy. cuz a smog shop can technically fail u for a CARB approved intake or catback, cuz its an aftermarket part.

Last edited by nfamous209; 04-01-2009 at 07:05 PM. Reason: added quote
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