I was wondering what makes the LS6 454 different from the regular 454 as far as parts go... I know theres a big power difference, I UNDERSTAND THAT, I was interested because I am Currently looking into a chevelle that orignally had a 454... But probally not the turbojet knowing my luck!!

Thank's Alot

well, just being a big block Chevy makes it a "turbo Jet"- a small block is a "turbo fire" and i think the 6 banger was "turbo thrift" or something like that.
kind of like every Olds V8 is a "Rocket".
so, you'd rather have a "turbo fire" than an LS-6 (which is, by definition, also a Turbo Fire)?
as for what's different between an LS-6 and a run of the mill everyday 454, well, it's only the crank, rods, pistons, block, heads, intake, carb, cam, lifters, and a few other "minor" details. i think the oil pans are the same- and maybe most of the fasteners that hold it all together.
oh, yeah- the price tag on an LS-6 car will have a few more zero's on it, as well, and the owner might freak out if you try to touch it, much less take it for a spin.

novaderrik is correct. The only thing that is the same about a LS-5 and LS-6 is that they are both 454 blocks, all the internals and everything else is different.
If you want a original 454 LS-6 car be preparied to pay a lot of money.
I'm just looking for some LS-6 heads for my 454 right now I think they would be pretty cool to have. I can just buy forged internals for my engine later.

Novaderrik got it. Its kind of a marketing thing. Turbo Jets are big blocks and the turbo fire were the small blocks.

With this being the case, Do you guys have any good sites or company's to contact to look at buying some LS6 parts , and yes I understand there is gonna be a "few more zeros".

thanks

and the owner might freak out if you try to touch it
haha

Go get a new 454HO motor. Put the solid cam it it and there you have it - 1971 spec LS6 motor, complete with the same factory dual plane that GM has used for 30?? years.

Go get a new 454HO motor. Put the solid cam it it and there you have it - 1971 spec LS6 motor, complete with the same factory dual plane that GM has used for 30?? years.

Absolutley :thumbsup:


..and don't forget to change the rocker arm studs out,the newer motors have "net" valve lash

They have 11 to 1 CR, forged pistons and big strong 7/16" bolt rod forged rotating assembly, big valve rect port heads, and a hy-po for the time solid lifter cam whereas the lesser motors generally had 10.25 to 1 CR., mild to down-right small hy-cams, cast pistons, a cast crank and smaller 3/8" bolt rods along with oval port heads and the small valves..

It is a true factory hy-po motor imho is all... BUT NOT as hopped up as the 427, L-88 or aluminum ZL-1 jobbers b/c THEY were all out race motors!!

pdq67

The LS5 also has a forged steel crank.

i thought the LS-6 was the same as all those "hopped up" 427's, but with 27 more cubic inches.
same heads, same cam, same block (except the ZL1 aluminum block, of course), same carb, just a longer arm on the crank and external balancing. i think the LS-6 also had a lower profile intake for hood clearance, as well.

i thought the LS-6 was the same as all those "hopped up" 427's, but with 27 more cubic inches.
same heads, same cam, same block (except the ZL1 aluminum block, of course), same carb, just a longer arm on the crank and external balancing. i think the LS-6 also had a lower profile intake for hood clearance, as well.

No, the L72 427 (425 HP) was basically the same as the LS6 (1970). The L71 427 (435HP, 3X2 carbs) was also similar, except the 3X2 intake (same cam, comp, etc)...

The L88/ZL1 were even more radical (12.0:1+ CR?, bigger cam, etc)...

Not sure on casting numbers, but essentially, the LS6, L71/L72 and L88 would have all used the same basic block (#512?), same heads (or did L88s use aluminum?)...

I always thought an LS-6 was a 4 bolt main and an LS-5 was a 2 bolt.

If looking to buld an LS6 style motor..go to TRW and buy L2349 pistons which I beleive are the repro pisons for that motor. Big rods as mentioned before, rectangular post heads if Im not mistaken as still available from GM, Same ones. Get flat tappet specs for cam. Most likely can find exact or close to intake. Carbs are everywhere. get some stock cast iron exhaust manifolds and there you go you have as close to an Ls6 as you can get w.o getting the real deal.

The "still-born" LS-7 was the 454 version of the last L-88!

I have read where GM backed out of selling it b/c it would dyno like 600hp+!!

They didn't want to kill Dr. Daddy's "little boys" I figure.....

That, and the Insurance going through the roof at that time!!

pdq67

I was wondering what makes the LS6 454 different from the regular 454 as far as parts go... I know theres a big power difference, I UNDERSTAND THAT, I was interested because I am Currently looking into a chevelle that orignally had a 454... But probally not the turbojet knowing my luck!!

Thank's Alot
Chevy made the big bock a turbo jet. it's just the designated name for that engine series. Marketing like someone already said. I worked in a chevy factiry in 1965 and it was like being in heaven for me. They had big blocks stacked to the roof in there, as well as 409's. It was pretty cool.

Buildings full of Big Blocks.......Sounds like a happy place.:D

I know this is an old thread and all but why is there a poll of Tuxedo Black and Cranberry Red? Went back and looked at the original poster and I see nothing.:confused:

Good thread. I have been wondering the same thing and just haven't asked yet.

A completely restored original '70 LS6 is rapidly approaching 6 figures...do the math...

You asked where you can buy LS-6 parts. Swap meets, eBay, this site, Chevelle gatherings.... lots of places. Just be SURE the part is as presented. In other words, if you can't walk up and identify it as being "genuine" (and it seldom is) you will end up with a mish-mash of parts, none of them "real". Bottom line is that unless you're starting a museum or in a nut/bolt restoration of a proven REAL LS-6 car, you'd be better of buying a crate motor from one of the builders on this site. You'd have more power for WAY less money. Go over and hang out in the Performance Forum and you'll find a lot of people with a lot of knowledge.

Rather than go out and buy a LS6, L-88, ZL-1, etc, etc, you would be $$$$$ ahead just to build your own formula of BB, and you'd end up with more power than any originally available factory production engine.
Simply start with an iron or alum 4-bolt block (or a 2-bolt block and add 4-bolt caps), add heads (iron or alum) of your choosing, a hefty solid roller cam (never available in a production 427-454), 12.5 pistons, aftermarket rods, bore it .060 and 4.25 stroke aftermarket crank, manifold, carb, headers and ignition of your choosing.
Such a "built" engine will be stronger than any production offering, and most probably cheaper than a real deal, documented L88 or LS6!
And it will be a 100% drop-in bolt-in for any Chevy that was originally available with a BB from the factory, such as a 66 Vette, 70 Chevelle, 69 Camaro, etc. :thumbsup:

As a perfect example, Bill Burk's former 70 with a 540 will kick an LS6's @zz all day long, without even breathing hard! Actually, it'll make a stock LS6 look like a 6cyl/PG---------------in reverse! :D

And now that Turbo-Jet and Turbo-Fire have been explained, who can tell us what the Turbo-Thrust was? Hmmmmmmmmmmmm ;)

Just guessing??? JATO ?
Bob

Just guessing??? JATO ?
Bob

BOOOOOOOONG!
Wrong. Next. :D

CLUE: There were 3 versions, think of a letter near the end of the alphabet. ;)

And now that Turbo-Jet and Turbo-Fire have been explained, who can tell us what the Turbo-Thrust was? Hmmmmmmmmmmmm ;)

That's what my girlfriend calls me, but I didn't know it had gotten out :D:D:D

I was wondering what makes the LS6 454 different from the regular 454 as far as parts go... I know theres a big power difference, I UNDERSTAND THAT, I was interested because I am Currently looking into a chevelle that orignally had a 454... But probally not the turbojet knowing my luck!!

Thank's Alot512 4 bolt block, fordged pistons, 291 rectangle port heads (1970) 026 1971, 520 lift solid cam, 7/16 dimple rods, tuftrided steel crank, low rise rise aluminum intake, windage tray with trap door oil pan.

I can't believe that out of all the Chevy nuts here, no one can say what the Turbo-Thrust engines were! :confused:

I can't believe that out of all the Chevy nuts here, no one can say what the Turbo-Thrust engines were! :confused:

I'm a newbie to the Chevy scene but I'll guess the "W"-series motor form Chevy? Wasn't there 3 versions-the 348-409-427? Turbo-Thrust, Super Turbo-Thrust, Special Turbo-Thrust, and the Special Super Turbo-Thrust???
Do I get a prize? Free T-shirt . . . bumper sticker . . . anything????? :D

I'm a newbie to the Chevy scene but I'll guess the "W"-series motor form Chevy? Wasn't there 3 versions-the 348-409-427? Turbo-Thrust, Super Turbo-Thrust, Special Turbo-Thrust, and the Special Super Turbo-Thrust???
Do I get a prize? Free T-shirt . . . bumper sticker . . . anything????? :D

LOOK AT THAT!!!!!!!!!!
The newbie got it! :thumbsup:
That's EXCELLENT, you're exactly correct! I really expected a few to at LEAST get the 348 and 409, but I'm impressed that the newbie also got the 427 (63 Z-11). You get a gold star and go to the front of the class! :D

Has anyone noticed that the poll has nothing to do with his original post? lol

Cranberry red FTW!!

Novaderrik got it. Its kind of a marketing thing. Turbo Jets are big blocks and the turbo fire were the small blocks.


The Canadian Beaumonts big blocks were called Econo Jets. I'm not sure what the small blocks were.
James

That poll was on another thread, I don't know if it was the same poster or not. I remember voting in that poll. Or, that thread lead into this conversation and it was put up as a new thread without changing the subject line.

That is without taking the poll off. Must have been the same poster.

The Canadian Beaumonts big blocks were called Econo Jets. I'm not sure what the small blocks were.
James


Econo flame ???? Sound right?

Tuxedo black LS6:yes:

Econo flame ???? Sound right?

:yes:

Econo flame ???? Sound right?


Cheap cross dresser?:D

Cheap cross dresser?:D

l:) l:)