mpett1

Does anyone know the production numbers of ALL 1970 LT1's. Corvette and Z28's

1970 Dave

I believe the number is 1297--to my knowledge there is no breakdown of Coupe's and Convertibles

SEMPER FI--1970 Dave

Rowdy Rat

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

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..

Tom73

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...

mpett1

You think.. That is a rare motor...

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!!

1970 Dave

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

Tom73

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

mpett1

=The motor were taken about...

Rowdy Rat

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.


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

mpett1

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...

StickShiftCorvette

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.

mpett1

If your lucky enough to do that then yes. But in its more likly to just make a clone LT1.