•► ► Original 1970 LS7 454 Engine for sale at CoW ◄ ◄•
 

Sorry, it takes a while to load.....
 

Sorry, it takes a while to load.....

But, new pics added today!

Chuck CoW

I've NEVER seen an early engine with "7.4L" cast into the side of it. All of my sources indicate that the 14015445 casting didn't start until 1978.
You say this is an original 1970 model LS7, not a crate engine?
I'm afraid I gotta call BS on this one.
Nothing personal, mind you, but that ain't a 1970 LS7 block - or a 1970 block at all for that matter.

:iagree: The references I have for this casting number start in 1975 and usual application is in light duty trucks.

Its sure not a '70 block, but GM did sell over-the-counter LS7 engines with the suffix XCH using the 14015445 blocks up to some time in the eighties.

No question.....
 

No question..... The engine was purchased some time about 1985 and I only use the "1970" designation to re-affirm the vintage of the motor.

Many people that have contacted me about it in the past (who didn't know the history of the LS7)

thought that it was a 2006 LS7. 1970 places the engine for those that were not aware of it's existence.

This ad stirred the pot because not many people had even heard of such a motor.

Thanks everyone for adding your technical comments!
Chuck CoW

I have an LS7 block in my car. It has the suffix XCH. I do not see it on this one. Also looks like the engine was decked and it was possibly removed. I think that is the most important stamp to identify an original LS7. Diehards will want to see this. Those pistons look terrible. This things looks like its been sitting for a while. Yes, I have also never scene a 7.4L stamp.

Why would you think????
 

Why would you think it was decked....?

This engine was not in a production car and that's the reason I show the vin# pad.... It's clean indicating it's never been in a production vehicle.


Chuck CoW

I hear ya, but the phrase

"It is an original 1970 454 @ 12.5:1 compression!"

is more than a little misleading. There's nothing vintage 1970 about this motor at all. I'm sure you would prefer having a happy buyer.

Chuck-

The deck surface does not look similar to typical broaching marks seen on original blocks. Your photo looks to be more similar to those of a rotary mill, never used in GM production.

http://www.corvettes-of-westchester....K/IMG_1836.JPG

The random '8s' stamped on the pad- including one underneath the head location- indicate that the engine has been apart for some type of work on a previous occasion.

No idea about the random 8s...but....
 

No idea about the random 8s...but, as stated in the e-bay auction....

When it was installed in my friends 1970 Vette, we used Aluminum L88 heads which eventually ended up on his 502 BB...

That's why the NEW iron heads were purchased.... To eventually complete the engine.

I'm not representing that the engine was "dated" 1970, but too many people were thinking it was a 2006 LS7 and I wanted to distinguish the generation of the motor.


While I totally appreciate the sharing of tech input for everyone and welcome the input....

The sarcastic posts from guys that want to impress me with their knowledge are just not welcome here.

Thanks for understanding....

Chuck CoW

With the number and size of these detailed pictures, I don't think the seller will mislead any potential seller here. Just from the pictures alone, anyone will easily figure out its a MkIV engine, and if anyone would mix between this engine and a new LS7 engine, then I don't think he even need to get into cars at all!

Chuck-

You may want to resize your pics. I have some friends that can't even open this post as they're just too big- around 3 meg EACH.

I agree ,after about 2 min I had to click on the X so I could read the posts.

If anyone needs....
 

If anyone that is REALLY INTERESTED calls me, I'll make the effort to resize some of the pics...


To resize them is a big pain in the butt...

Let me know.

Chuck CoW

May be a pain in the butt for you, but it's a pain for everyone who opens the thread now.
Maybe re-run the thread and lose the "original LS7" from the title - that's what's causing the stir...
And keep for sale items in the correct section...

There is also a "For Sale" section to the forum... posting in the tech/performance category will likely lead to technical corrections to the title.. best of luck with the sale

:iagree: Myself included. All I see are red "X"'s.