1970 LT1 production numbers - Corvette Forum

Go Back   >
Log In 
Register FAQ Search Today's Posts Mark Forums Read Vendor Directory

C3 General
General C3 Corvette Discussion not covered in Tech Sponsored by
Corvette America

1970 LT1 production numbers

Reply
 
 
 
Thread Tools Search this Thread
Old 06-27-2006, 02:23 PM   #1
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default 1970 LT1 production numbers

Does anyone know the production numbers of ALL 1970 LT1's. Corvette and Z28's
mpett1 is offline   Reply With Quote
Old 06-27-2006, 02:50 PM   #2
1970 Dave
CF Senior Member
 
1970 Dave's Avatar
 
Member Since: Apr 2000
Posts: 1,013
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by mpett1
Does anyone know the production numbers of ALL 1970 LT1's. Corvette and Z28's
I believe the number is 1297--to my knowledge there is no breakdown of Coupe's and Convertibles

SEMPER FI--1970 Dave
1970 Dave is offline   Reply With Quote
Old 06-27-2006, 02:53 PM   #3
Rowdy Rat
CF Senior Member
 
Rowdy Rat's Avatar
 
Member Since: Dec 1999
Location: PA
Posts: 2,275
Thanked 27 Times in 26 Posts
Default

Quote:
Originally Posted by mpett1
Does anyone know the production numbers of ALL 1970 LT1's. Corvette and Z28's
The GM supplied "produced for sale" numbers for 1970 LT-1 produced cars is as follows:

Corvette RPO LT-1 - 1287 units
Camaro RPO Z-28 - 8733 units
Nova COPO 9010 - 177 units (178 depending upon the source)

LT-1 equipped Corvettes were rated at 370 horsepower and used an open element air cleaner assembly as well as a full transistor ignition system. Engine broadcast codes were CTU (early), CTK (late - all p/s applications), CTV (ZR-1). All applications were manual transmission equipped; no automatic transmission was available.

LT-1 equipped Camaros and Novas were rated at 360 horsepower and used a dual snorkle, closed element air cleaner assembly and a standard point type distributor. Engine broadcast codes were CTB (manual transmission) and CTC (automatic transmission) for both Camaro and Nova applications.

Regards
Rowdy Rat is offline   Reply With Quote
Old 06-27-2006, 03:49 PM   #4
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Thanks Rowdy

also what would a LT1 vette motor be worth. I think I may be able to pick one up.


When you getting that LS-6 on the road.. ETA..
mpett1 is offline   Reply With Quote
Old 06-28-2006, 01:05 AM   #5
Tom73
CF Senior Member
 
Tom73's Avatar
 
Member Since: Apr 1999
Location: Central Texas
Posts: 12,544
Thanks: 0
Thanked 9 Times in 7 Posts
Default

Quote:
Originally Posted by mpett1
....also what would a LT1 vette motor be worth. I think I may be able to pick one up....
I would not think very much since it is old school, but to the owner of the car that it originaly came out of it could be gold

tom...
Tom73 is offline   Reply With Quote
Old 06-28-2006, 10:39 AM   #6
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default

You think.. That is a rare motor...
mpett1 is offline   Reply With Quote
Old 06-28-2006, 12:04 PM   #7
PRNDL
CF Senile Member
Support Corvetteforum!
 
PRNDL's Avatar
 
Member Since: Jul 1999
Location: Huntersville NC
Posts: 26,358
Thanked 7 Times in 6 Posts
Default

Quote:
Originally Posted by mpett1
You think.. That is a rare motor...
Not to put a number on it... but I think a 70 or 71 corvette LT-1 engine would be worth a fair amount. After all, that is the key ingredient for creating an LT-1 corvette!!
PRNDL is offline   Reply With Quote
Old 06-28-2006, 12:24 PM   #8
1970 Dave
CF Senior Member
 
1970 Dave's Avatar
 
Member Since: Apr 2000
Posts: 1,013
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Without that LT-1 motor the value would probably drop between $15,000 and higher--just look at what 1970 LT-1's are going for and compare to the base motor,350/350, or 454. And to the person who's motor it is

SEMPER FI--1970 Dave
1970 Dave is offline   Reply With Quote
Old 06-28-2006, 10:23 PM   #9
Tom73
CF Senior Member
 
Tom73's Avatar
 
Member Since: Apr 1999
Location: Central Texas
Posts: 12,544
Thanks: 0
Thanked 9 Times in 7 Posts
Default

Quote:
Originally Posted by PRNDL
Not to put a number on it... but I think a 70 or 71 corvette LT-1 engine would be worth a fair amount. After all, that is the key ingredient for creating an LT-1 corvette!!
An original LT1 would be about 25% or more over a base engine car. But that is any original. Just sticking an LT1 into a Vette creates a hot rod or at best a clone. Still not original
Tom73 is offline   Reply With Quote
Old 06-29-2006, 03:19 PM   #10
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default

=The motor were taken about...
mpett1 is offline   Reply With Quote
Old 06-29-2006, 04:08 PM   #11
Rowdy Rat
CF Senior Member
 
Rowdy Rat's Avatar
 
Member Since: Dec 1999
Location: PA
Posts: 2,275
Thanked 27 Times in 26 Posts
Default

Quote:
Originally Posted by mpett1
Thanks Rowdy

also what would a LT1 vette motor be worth. I think I may be able to pick one up.
You're very welcome!

Believe it or not, the major parts required to build a "numbers correct" 1970 LT-1 long block aren't that hard to find or expensive.

The 3970010 casting block is common as dirt... Four bolt main blocks are more difficult to find, but any good machine shop can install the correct caps on a two bolt main block.

The 3927186 casting heads are the same as the block. The LT-1s came with the big valves (2.02/1.60), but a small valve head can be cut for the big valves (and is often preferred by some shops).

The finding a forged crank that isn't ground undersize .020+ might be tough, but they are out there and are reasonablly priced because the current crop of forged cranks from GM and the aftermarket are just as good (better in some cases).

The 3972110 casting intake is pretty common too... I see them at swap meets all the time.

Connecting rods are common... Pistons are long since dicontinued and I believe that even the L-46 pistons that GM carried for many years are discontinued as well, but a similar piston is available from Sealed Power (which I believe used to be TRW, who made the original)... The exact oil pan might be tough to find, but I think that someone is reproducing these now... Camshaft is GM discontinued, but Crane has an exact copy (they were supplying GM before it was discontinued)... Valve gear is best purchased through the aftermarket, although some of the original LT-1 parts are still available.

My guess is that with some judicious purchases and machine work, you could put together a correctly dated and numbered LT-1 long block for somewere in the $3,000 - $4,000 range. I guess that figure is what I'd base any purchase decision on. If the engine that you are looking at has a factory stamped build date and/or VIN derivative, then the engine might become much more valuable to the person who actually owns the car, but that is the only instance where I see the price going higher than the range that I quoted.

The huge cost for restoring an LT-1 correctly occurs when you have to purchase the non-long block items... A.I.R. equipment, T.I. distributor system, alternator, carburetor, etc. Not only are some of these items extremely expensive, but they are next to impossible to find (especially if correct dates are an issue) as well.

The A.I.R., T.I. (1111491 distributor, 272 coil, amplifier box, and wiring harness), and 1100884 61A alternator mentioned above (all restored and ready to bolt on) will set you back around $4,000 to $5,000 alone IF you can find them.


Quote:
When you getting that LS-6 on the road.. ETA..
I've actually been working on getting things organized to get started in the next month or so... I also started taking detail photos of the car before disassembly (you can never have enough photos) for reference during restoration and so that all goes smoothly when I start putting it back together.

If all goes according to plan, I'm hoping to have it back on the road in two years... Figure the summer of 2008.

Regards,

Stan Falenski
Rowdy Rat is offline   Reply With Quote
Old 06-30-2006, 10:11 AM   #12
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Rowdy or Stan are you in adams county or wayne county? The guy wants 3k for the dang thing.. I here ya about the 3970010 casting they are a dime a dozen but what about the engine suffix saying the this is LT1 motor...
mpett1 is offline   Reply With Quote
Old 06-30-2006, 06:45 PM   #13
StickShiftCorvette
CF Senior Member
 
StickShiftCorvette's Avatar
 
Member Since: Dec 2004
Posts: 1,345
Thanks: 0
Thanked 0 Times in 0 Posts
Default

Quote:
Originally Posted by mpett1
Thanks Rowdy

also what would a LT1 vette motor be worth. I think I may be able to pick one up.


When you getting that LS-6 on the road.. ETA..
You just need to find the CAR that went with the engine. If you can find its owner you might be able to get big money for it or you could BUY the car and reunite them yourself.
StickShiftCorvette is offline   Reply With Quote
Old 07-01-2006, 11:05 AM   #14
mpett1
CF Senior Member
Thread Starter
 
mpett1's Avatar
 
Member Since: Feb 2005
Location: Harleysville pa
Posts: 571
Thanks: 0
Thanked 0 Times in 0 Posts
Default

If your lucky enough to do that then yes. But in its more likly to just make a clone LT1.
mpett1 is offline   Reply With Quote
Go Back   Corvette Forum >
Reload this Page
  • 1970 LT1 production numbers
  •  
     
    Reply

    Related Topics
    Thread Thread Starter Forum Replies Last Post
    WTB 1970 Goodyear F70-15 tire Terry Lanham C3 Parts for Sale/Wanted 4 08-08-2015 03:52 PM
    Searching for 1970 intake manifold 3972110 Major Kong C3 Parts for Sale/Wanted 0 08-15-2014 04:47 AM
    What is the number on 1970-72 LT-1 engines? TheSaint C3 General 21 01-20-2014 08:18 PM
    How many 1970-1972 LT-1's are left?? hobbycarcorvettes C3 Tech/Performance 27 05-23-2009 09:02 AM
    Casting numbers for 1970 LT1 heads? L Holmes C3 Tech/Performance 2 04-09-2007 09:15 AM


    Tags
    1970, breakdown, convertible, corvette, differences, distributor, lt1, motor, number, numbers, pistons, production, sale, total, z28

    Thread Tools Search this Thread
    Search this Thread:

    Click for Advanced Search

    Posting Rules
    You may not post new threads
    You may not post replies
    You may not post attachments
    You may not edit your posts

    BB code is On
    Smilies are On
    [IMG] code is On
    HTML code is Off
    Trackbacks are Off
    Pingbacks are Off
    Refbacks are Off

    Forum Jump


    All times are GMT -4. The time now is 02:38 PM.