LS6 1970 Chevelle info needed ?

[hemi24]

I was looking around my area and I came across 1970 LS6 Chevelle in good shape for sale anyone know a good website that I can check the vin to prove to me it's for real and on the car what do I need to look for to also prove it's for real I know how to do all this on mopars but on Chevy not so much.

[maxwellwedge]

Here's a couple - the first one has good info....

http://chevellestuff.net/

http://ls6registry.com/index.htm


Just remember it ain't no Mopar....The VIN on these will tell you nothing about the engine. You need paperwork, the POP and to really check all the numbers on the drivetrain. Easy cars to fake.

[Chryco Psycho]

they can be faked so easily , there is no engine code in the vin , an aquaintence subsidised his living buying clean chevelle bodys & making them all into Rare LS6s
He tried the same thing with a 440 +6 71 chall & had major issues trying to pass that off as a real car , it was spectacular when done just not a real 6 pack R/T

[1969chargerrtse]

I had one a ways back. I guess check the engine vin and date and make sure you check engine casting numbers. I know of someone that ground the casting date down and re did it with weld to get the correct date and then painted over the weld bead. Of course any pictures or history from it's past will help. Previous owners etc.  In my case the previous owner was contacted and learned the engine was incorrect.
I paid 3,800.00 for that 4 spd car back in the 80's.

[Davtona]

they can be faked so easily , there is no engine code in the vin ,  

I agree engine code is not in the VIN. Build sheet to the car is the only fool proof way to know if it is a LS-6 car or even an SS for that matter. If the build sheet exists. Build sheet to my car was found above the gas tank. A lot of cloned SS Chevelles out there. Make sure it is a SS not a Malibu cloned to a SS. Original matching number and code block and transmission might also confirm LS-6 status if the numbers have never been messed with. Cool find if it is what its supposed to be.

[A383Wing]

didn't the build tag under the hood tell if it is real or not? My 68 Firebird had a metal tag attached to cowl area

[Davtona]

didn't the build tag under the hood tell if it is real or not? My 68 Firebird had a metal tag attached to cowl area

I don't believe so. Yes there is a cowl tag but it does not spell out the engine. Check out this page. It kind of repeats its self though.

http://www.nofearmotorsports.com/index.cfm?action=get_page&id=42

[TK73]

What's that saying about more SS's being on the street now than were made...?

Good luck on finding a real LS6 

[nascarxx29]

My friend I grew up with had a few LS6 Chevelle .The Tach I recall is a clue due to the higher redline.The buildsheet can behind door panel etc locations.If you know the dealer there might be a registry .Similar to the Yenkos

[Ghoste]

The metal tag under the cowl just has trim and paint info basically, nothing on drivetrain or other options.  Is there information behind the heater on all GM's?  There is some kind of way to prove a Chev's legitimacy on some of them there I thought but it would be doubtful that the seller would let you remove the heater box to find it.
Wasn't the LS6 actually produced in greater numbers than the LS5?

[hemi24]

Thank guys for the help it does have the build sheet and on it says LS6 so i guess i am ok there the motor long gone so now where can i find a true LS6 date code motor.

[Davtona]

Thank guys for the help it does have the build sheet and on it says LS6 so i guess i am ok there the motor long gone so now where can i find a true LS6 date code motor.

4 bolt main block. I would imagine they are around. Date correct might be tough. Should be a 512 casting I believe.

Does anyone know anymore on the heater tag Ghoste refers to?? I'd like to know if there is such a tag.

[Ghoste]

If you are talking about under the heater box, I'm not even sure it's a tag or a stamping right into the panel.  I'll try and find out more from the Chevy guy that told me about it.

[maxwellwedge]

Yes - Panel stamped - there will be a frame stamping as well....http://chevellestuff.net/qd/frames.htm

Protect-O-Plate is good to have as well.....I "flipped" this in p-shop so you can read it - they are backwards.

This one was for my first LS6

[Davtona]

Yes - Panel stamped - there will be a frame stamping as well

I new about the frame stamping and should know about the heater box one. Maybe long ago forgotton about that one. But aren't these VIN numbers only. They will not tell engine size correct?? So would not verify LS-6 or any other engine for that matter. 

[Cooter]

What's that saying about more SS's being on the street now than were made...?

Good luck on finding a real LS6 

Same thing with Hemi Cudas..440+6 cars....etc...Anything that's worth money.
I mean, nobody clones a 4dr sedan with a 230 6....SS, RS/SS, LS6, 440+6, Hemi, 340+6, Yenko, GT 500, GT 350, BOSS 302, and so on and so on...

[Davtona]

Does protect-o plate prove it also?? Does the CRV in your plate stand for LS-6 4 speed coded block Jim?

[maxwellwedge]

Does protect-o plate prove it also?? Does the CRV in your plate stand for LS-6 4 speed coded block Jim?

It definitely helps to have the P-O-P - along with the sheet and a careful scrutiny of all the numbers. The Mopar stuff is great because the engine code is in the VIN....we are luckier in that respect.

Yes to the CRV question.

[Chryco Psycho]

I know my Aquaintance had no problem building Fake LS6 cars , he would do 2 or 3 at a time , find clean bodies & just add the right parts to make it an LS6 , obviously without a build sheet ! , The Hemi & 440+6 cars are similar in that there are more around than ever but you can  easily tell they are cloned not genuine , the LS6 you simply cannot prove if they are legitimate or not without the paperwork so yeah there are more now than there ever were

[maxwellwedge]

Yes - Panel stamped - there will be a frame stamping as well

I new about the frame stamping and should know about the heater box one. Maybe long ago forgotton about that one. But aren't these VIN numbers only. They will not tell engine size correct?? So would not verify LS-6 or any other engine for that matter. 

Yes - Correct. But - It could be a piece to the puzzle with the dates etc.

[TK73]

What's that saying about more SS's being on the street now than were made...?

Good luck on finding a real LS6 

Same thing with Hemi Cudas..440+6 cars....etc...Anything that's worth money.
I mean, nobody clones a 4dr sedan with a 230 6....SS, RS/SS, LS6, 440+6, Hemi, 340+6, Yenko, GT 500, GT 350, BOSS 302, and so on and so on...

I didn't explain well:
My point is that Chevy's are easier to clone and pass off as "real"... Chryco said it better...

[nascarxx29]

Theres a LS6 in our town guy brothers bought new.One brother passed back in 70 .Other brother kept the car to this day .Sad thing it its been outside but we got reference pictures from it.My Old LS6 friend tried to buy it My friend had and may have or know of 512 blocks.He has a 427 copo motor 396-375 motor.Sets of High Perf square ports And aluminum heads Zl1 water pump M22 rock crushers etc in his garage basement etc 30+ year accumulation .Heres a good info site with reference cars and info.
http://www.yenko.net/ubbthreads/ubbthreads.php

[lokalik]

remember the ls6 was just an option that you could get on a malibu, el camion, monte carlo and chevell. the 136 prefix in the vin and the 138 prefix in the vin helps to i.d. the car. i believe 136 was for a malibu and 138 for chevell. bow tie did a bad thing in 70 with it's car i.d. they are the easiest to fake . the P.O.P helps in telling you what the car really is. you can take a 350 chevell and make it to a SS Ls6. the bad thing is the P.O.P was kind of like the build sheet for mopar, easy to lose.  mopar vin will tell you most of the important info, not so much with the bowtiie vin. good luck, buyer beware. my friend bought a really nice Ls6 SS chevell turned out to be a mailbu.

[hemi24]

1970 LS6 Chevelle info needed (Kingman Ks)
Date: 2011-10-26, 9:58AM CDT
Reply to: sale-xba32-2669728550@craigslist.org [Errors when replying to ads?]
1970 LS6 Chevelle info needed we bought this car and would like to find previous owners or information of it's history around the Wichita area.
The car sold new at Branine Chevy dealership in Mulvane Kansas In 1970 stayed around the Wichita area 4 or 5 years before being sold to someone in Kiowa county then to Pratt Ks .
The car's fathom blue stripe delete low option car we have the build sheet so we know it's a real LS6.
If you know this car we would like to talk to you please email me trough craigslist.


    Location: Kingman Ks
    it's NOT ok to contact this poster with services or other commercial interests

image 0

[hemi24]

here a picture of the car.

[hemi24]

build sheet.

[maxwellwedge]

Looks like an LS5 - Maybe not

I don't see LS6 or conversion printed anywhere.

Scratch All that.....

It does say Z15 SS 454 PKG

It usually says:  Z15 SS 454 CONVER

[hemi24]

build sheet it's kind of hidden buy the light on the page but it says LS6 - 454 it's in the middle of the picture..

[hemi24]

build sheet it's kind of hidden buy the light on the page but it says *LS6 - 454 it's in the middle of the picture..

[maxwellwedge]

Yes - I can see it .....At first it looked like something else. Sorry about that! 

[BlueSS454]

These particular Chevelles are faked so often it's ridiculous.  There are people out there faking buildsheets that look good to the untrained eye as well.  There is a lot more that identifies an LS6 car than meets the eye.  1 key is the build date.  The earliest known LS6, the "pilot car" has a November 1969 build date in preparation for RPO L78 being replaced by RPO LS6 on January 1, 1970 when the ban on 400+ CID engines not being available in mid sized cars.  Each component on the LS6 engine (alternator, carb, distributor, fan, pulleys, etc) are unique to that car.  The LS6 cars also have specific pinion yokes on the rear axle.  It's gotten to the point where people are restamping alternators and distributors in an effort to fake one.  A fake distributor is easy to spot as they only have 4 possible dates on them....IF you know what they are.  All LS6 cars were AIR equipped as well, no exceptions.
The VIN and Fisher Body Plate ONLY tell you if it's a 6 cylinder or V8 car.  There is an anomaly with cars built at the Kansas City Leeds plant as far as the Fisher body plate is concerned.  It's an observation taken from cars with documents that SS equipped cars from that plant be it a 396 or 454 car, have the letter "L" stamped into the plate.  Documented non SS cars have been found not to have it.  It's nothing concrete, just an observation made.
The VIN is stamped on 2 places on the firewall of all 1970 Chevelles except those built at the Arlington, TX plant.  Both behind the heater box on the engine side.  1 is under the heater core, the other under the blower motor opening.  Not all of them have the VIN stamped on the frame.  I know Atlanta built cars do, I've never noticed it on the other 70's that I've had from other plants.  The VIN is stamped on the engine near the oil filter OR the pad in front of the right cylinder head....fakes are EASY to spot on that.  The VIN is also stamped on the transmission be it a TH400 or M22 which were the ONLY transmissions available on 454 cars.

remember the ls6 was just an option that you could get on a malibu, el camino, monte carlo and chevelle. the 136 prefix in the vin and the 138 prefix in the vin helps to i.d. the car. i believe 136 was for a malibu and 138 for chevelle. bow tie did a bad thing in 70 with it's car i.d. they are the easiest to fake . the P.O.P helps in telling you what the car really is. you can take a 350 chevelle and make it to a SS LS6. the bad thing is the P.O.P was kind of like the build sheet for mopar, easy to lose.  mopar vin will tell you most of the important info, not so much with the bowtie vin. good luck, buyer beware. my friend bought a really nice LS6 SS chevelle turned out to be a mailbu.

This is incorrect, I will explain.  Chevelle is the BASE series line of the car (13000).  The Malibu is a trim level package, nothing more.  RPO Z15 was ONLY available on V8 Malibu Sport Coupes and convertibles (13637 & 13667), Monte Carlos (13857), Custom El Camino (13680).  The base model Chevelle (13400 series) could NOT have this RPO checked off.
So, ALL SS cars in 1970 ARE based on the Malibu trim level therefore ALL SS equipped Chevelles with have the 13637 (coupe) or 13667 (convertible) VIN.  Any car with a 13500 VIN started life as a 6 cylinder car and CAN NOT be an SS car.
People commonly mistake the "138" VIN deal thinking it applies to all Chevelles, not true.  That ended in the 1969 model year when SS equipment became optional as opposed to a separate Model from 1964-1968.  If you have a 138 VIN car in 1970, you have a Monte Carlo or Station Wagon.

[1969chargerrtse]

These particular Chevelles are faked so often it's ridiculous.  There are people out there faking buildsheets that look good to the untrained eye as well.  There is a lot more that identifies an LS6 car than meets the eye.  1 key is the build date.  The earliest known LS6, the "pilot car" has a November 1969 build date in preparation for RPO L78 being replaced by RPO LS6 on January 1, 1970 when the ban on 400+ CID engines not being available in mid sized cars.  Each component on the LS6 engine (alternator, carb, distributor, fan, pulleys, etc) are unique to that car.  The LS6 cars also have specific pinion yokes on the rear axle.  It's gotten to the point where people are restamping alternators and distributors in an effort to fake one.  A fake distributor is easy to spot as they only have 4 possible dates on them....IF you know what they are.  All LS6 cars were AIR equipped as well, no exceptions.
The VIN and Fisher Body Plate ONLY tell you if it's a 6 cylinder or V8 car.  There is an anomaly with cars built at the Kansas City Leeds plant as far as the Fisher body plate is concerned.  It's an observation taken from cars with documents that SS equipped cars from that plant be it a 396 or 454 car, have the letter "L" stamped into the plate.  Documented non SS cars have been found not to have it.  It's nothing concrete, just an observation made.
The VIN is stamped on 2 places on the firewall of all 1970 Chevelles except those built at the Arlington, TX plant.  Both behind the heater box on the engine side.  1 is under the heater core, the other under the blower motor opening.  Not all of them have the VIN stamped on the frame.  I know Atlanta built cars do, I've never noticed it on the other 70's that I've had from other plants.  The VIN is stamped on the engine near the oil filter OR the pad in front of the right cylinder head....fakes are EASY to spot on that.  The VIN is also stamped on the transmission be it a TH400 or M22 which were the ONLY transmissions available on 454 cars.

remember the ls6 was just an option that you could get on a malibu, el camino, monte carlo and chevelle. the 136 prefix in the vin and the 138 prefix in the vin helps to i.d. the car. i believe 136 was for a malibu and 138 for chevelle. bow tie did a bad thing in 70 with it's car i.d. they are the easiest to fake . the P.O.P helps in telling you what the car really is. you can take a 350 chevelle and make it to a SS LS6. the bad thing is the P.O.P was kind of like the build sheet for mopar, easy to lose.  mopar vin will tell you most of the important info, not so much with the bowtie vin. good luck, buyer beware. my friend bought a really nice LS6 SS chevelle turned out to be a mailbu.

This is incorrect, I will explain.  Chevelle is the BASE series line of the car (13000).  The Malibu is a trim level package, nothing more.  RPO Z15 was ONLY available on V8 Malibu Sport Coupes and convertibles (13637 & 13667), Monte Carlos (13857), Custom El Camino (13680).  The base model Chevelle (13400 series) could NOT have this RPO checked off.
So, ALL SS cars in 1970 ARE based on the Malibu trim level therefore ALL SS equipped Chevelles with have the 13637 (coupe) or 13667 (convertible) VIN.  Any car with a 13500 VIN started life as a 6 cylinder car and CAN NOT be an SS car.
People commonly mistake the "138" VIN deal thinking it applies to all Chevelles, not true.  That ended in the 1969 model year when SS equipment became optional as opposed to a separate Model from 1964-1968.  If you have a 138 VIN car in 1970, you have a Monte Carlo or Station Wagon.

Man you know your stuff.  I used to be like that with 69 Camaros.  Had them all, 375/hp Pace cars, RS Z/28, RS/SS conv etc.  Now I remember a few facts and own a Charger.

[A383Wing]

yea...I had that info also on the Firebirds....we had a 68 'Bird....

that was explained very well BlueSS.....

could not have said it better myself....which is why I asked about the build tag under the hood...should it not tell someone if it's a real base model for the SS cars?

Bryan

[BlueSS454]

The fisher body plate will have the model designation on it via the top line.  It will begin as this....ST70 13637 or ST70 13667  .

[A383Wing]

yea..that's the tag I was trying to describe...the "Body Plate"

[hemi24]

ours is  136370K