Loki1199

Hi all,
Just wondering if there is a place that lists the differences between these two motors. Might be a newbiw question, but I'm not really familiar with these two engines.
Thanks,
Loki

Da91Bird

They're exactly the same except for the block, heads, induction, ingnition, cam, crank and exhaust.

Ok, sorry for the smart-*** format, but I think that about sums it up. The LS1 block is all aluminum, as are the heads. They're both port injected, but the LS1 induction is much different. I'm afraid I don't know enough of the technical information about each to make a clearer explanation than that. Basically, you can't expect parts from one to interchange with another.

brharris27370

LS1 is not a small block as we know it. Nothing interchangeable.

camaro6spd

The LS1 is a "reworked TPI system" If you look at it...it has runners like ours but they run a different way.

a73camaro

When I first saw a LS1 head, I thought to myself

"There goes the neighborhood."

Looks A LOT like a Ford head.

MIG-29

loki my man,
let's put this clear...nothing will fit on your third gen, the engine including the block are so different, it even requires a diferent bellhousing. (i,ve read it on superchevy)
you could do the mods to adapt the complete engine but the list is longer than that of "Don Giovanni" girlfriends.
Fernando.


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third gen muscle power is the only thing that can match the power of flight...

AJ_92RS

The LS1 is a totally different motor.

It has (as some have already said) an aluminum cast block. It has totally diff. stroke, bore, firing order, ignition system, cooling system, main caps, etc., etc.

It doesn't even calculate out to 350 cid. IIRC it's like 346 or 348 cid. (one of those two) Even the siamese casting is gone. Well they had to do that because of the sleeves.

I've read that only the bellhousing for the T56 is different. I heard that the 4L60E still bolts right up.

AJ

Loki1199

Thanks Guys,
I was more or less asking just from an informational/learning stand-point. I'd like to know as much about what else is out there as I can. I knew the LS1 was really different, and now I know exactly how different.


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1986 T/A. 305 replaced with 350, bored .030, Edelbrock Performer intake, Holley 600 carb, A/C delete, computer delete, smog delete, A.I.R. delete, Accel distributor converted from vacuum to mechanical, stock heads, cam is the best I cold run with the computer (need to change it), flowmaster muffler, and a TH350 tranny with B&M shift kit

FAST383

LS1 Gen III small block. Everything is alluminum save the intake manifold is "composite plastic" or some b.s. the cubes work out to be 346. You cannot even bore an LS1 the same as a normal iron block. LS1's power curve is much diff as well. While my LT1 and the L98 and LB9 TPI's are low straight table like torque curves an LS1's curve progresses until a peak at around 4500 I believe.Stock I found my LT1 and other LT1's can hang with one till around 50-60 then see ya the LS1's pull like a frickin batt outta hell. They have incredible top ends. Trans other than bell housing as stated before are pretty much the same. I believe the reverse cooling is gone but someone correct me if I'm wrong. Hope some of my rambling helps.

Josh

Guest

Are you absolutely 100% positive of that?


Anyways, besides the numerous above differences, there is one thing that is the same, the bore spacing. Not much eh?

ronterry

Fast383 is right on. I surprised I '97 LS1 Vette with my '94 LT1 off the light but he just destoyed me beyond 2nd gear.
I swear he had a super charger, cause it pulled to damn hard ??? It was one of those purple pace car. And for (a73camaro) it was out here by the pinery on parker rd.

The guy went on to at least 120-130mph. I gave up at about 85. (my insurance is high enough). At that point he was couple hundred feet a head of me. Yeaaa he had a super charger or something !!! The funniest part was all the mini-vans and what nots were like a mile behind us, and yea one of the SUV tried, and did good up till about 5 MPH.

The question here should be the differeces between the LS6, and LS1. I heard the new LS6 is pushing 405 HP. (same HP as the 94-95 LT5 out on a Corvette ZR-1)

Ron


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'82 Trans Am
'81 Camaro Z-28
'94 Vette LT1 Coupe
'00 Impala LS

CODY BEHNKE

Most chevy 350's (LT1, LS1, L98) Don't figure to exactly 350ci most are 346ci just like the Ford 5.0 is really like 4.8999. And also almost all aluminum engines use steel sleeves, aluminum can't hold it's round.

ronterry

Oh yea, those AL blocks COOOOOOOOOOSSSSTTTT buck-o-roooosss.

rezinn

actually...3.48*4pi*8=349.84775 cubic inches on the LT1 and L98.

AJ_92RS

Thank you. Glad to see some of you can use a calculator.

Another "Actually". The stroke on a Gen I & II block 350 (& 305, 267) is 3.484 and if you calculate it out that way, it comes out to 350.24988.

Just another example of Chevy (GM) under rating their engines.



NO ****? WOW!!!!! I DIDN'T KNOW THAT (before I learned it 15 yrs ago)!!!!!!!

Sorry. Just had to do it. I'm just pissing with you CODY. Don't take it personal.

The real reason is because aluminum would wear away at ~20 miles.

AJ

a73camaro

The volume of a cylinder is its length times its circular area.

Bore^2 * pi/4 * stroke = Volume of one cylinder


[This message has been edited by a73camaro (edited December 05, 2001).]

a73camaro

I'd like to see you unbolt the bore spacing from one engine and install it on another. That is was interchangeable means.

Guest

I didnt say the bore spacing is interchangeable, I said it was the same. And there is stuff that is interchangeable between the two but not quite a direct bolt on sorta deal.

AJ_92RS

If you want to get real technical, the proper goemetric formula to find the volume of a cylinder is......

(PÎ)r² x Length = volume

I.E. the length would be the 'stroke'. But that's the proper way to write the formula.

AJ

[This message has been edited by AJ_92RS (edited December 05, 2001).]

a73camaro

Proper way????

You can use either and both are correct.

d = 2r (diameter is twice as big as the radius)

Your formula

πr² · Length = volume

r = d/2

substitute d for r

π(d/2)² · Length = volume

πd²/2² · Length = volume

π/4 d² · Length = volume

The reason for using d instead of r is that bores of engines are referenced to their diameter not their radius.

But it is easy enough to convert a diameter to a radius. Plus you have to remember another equation with the diameter part.

AJ_92RS

Look in any geometery book, anywhere and it will have this...........

(PÎ)r² is the formula to find the area of a circle.

And the area multipied by the length is the way to calculate the volume of a cylinder.

LOOK IN ANY BOOK!!!!!!! That is the simplified, proper way to write that formula.

I guess all it really boils down to is "is the glass half full, or half empty?" Just the way we all look at things differently.

"You say (põ-tāt-õ), I say (põ-tät-õ)......"


AJ

[This message has been edited by AJ_92RS (edited December 07, 2001).]

Project86Iroc

AHHHH!!!!!! Im back in Algebra!!! :O only worse, you guys are pulling out characthers Ive never dreamed of using on a computer. Please stop, youre scaring a young white kid now My only dispute with all postings regards the placement in a thirdgen. It has been accomplished and as the motors start coming down in price, youll see it done more. Mike

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I would love to be there when those Muslim Bastards hit the Pearly Gates and realize they were wrong...

Dan91Z

ok.. i opened up a geometry book and looked on page vii and all it had was alot of nonsense about supplements, like a student's soulution manual, electronic calculator workbook, along with the isbn numbers for them..

so i guess it can't realy be found anywhere (anywhere as in the way used in the above qoute..)in any geometry book.. although in this particular book, it's on page 372.. :-)

had nothing better to do... :-) i'm sure if i look hard enough i can find it on another page too...

88 WS6 TransAm GTA

iTrader: (1)

<~ Also Scared!
::school flashbacks::

Grim Reaper

That is what they taught me when I went to school. In fact, I remember my math teacher telling us a story to help us to remember it.

There was this young lad who'd moved away from the family farm to go to college. During Christmas Break, the son came home to the family farm for the Christmas holidays. At the Christmas dinner the father asked his son what he had learned at college.

The son proudly says "Pi r²". The father looks at his son and says "That's wrong. Pi r round".

And I've never forgotten that formula for the area of a circle.

PS: Pi/4 * d² = Pi r², but doesn't sound as good as "Pi r²".

[This message has been edited by Glenn91L98GTA (edited December 07, 2001).]

cort351w

What kind of retard learns that in college? I kind of doubt he ought to be there in the first place

Grim Reaper

It was a joke told over 30 years ago by my Grade 8 math teacher to help us remember the formula for determining the area of a circle. And it did.

Abubaca

iTrader: (3)

The LS1 also has 6 bolt mains. Cool huh. The 4 traditional bolts and 2 on the sides!