HOLY LS7

[jetboatperformance]

So I'm doing research on an LS7 crate motor I have in my possesion and came across this from a friend today

 

[wishiknew]

So I'm doing research on an LS7 crate motor I have in my possesion and came across this from a friend today

someone told me that that motor is not good for a marine application

 

[bonesfab]

You can ask whatever you want for it. Doesn't mean they will get it. The value would be if it had the correct pad stamp for a chevelle or vette.

 

[Fastdadtsmith]

someone told me that that motor is not good for a marine application

I believe the 12.25 compression, cast iron heads, and flat tap cam say there are better options.

 

[Fastdadtsmith]

You can ask whatever you want for it. Doesn't mean they will get it. The value would be if it had the correct pad stamp for a chevelle or vette.

Were these ever an option? I thought they scrapped ever installing from factory and it was sold as an "off road only" long block?

 

[jetboatperformance]

someone told me that that motor is not good for a marine application

Perhaps , but its been in a boat since 73 till recently

Rare LS-7 Crate Engine Finally Fired Up After Sitting in a GM Crate for 44 Years

A N.O.S. LS-7 454 big-block Chevy from 1979 runs for the first time at Westech Performance—read what happens!

www.motortrend.com

 

[bonesfab]

Were these ever an option? I thought they scrapped ever installing from factory and it was sold as an "off road only" long block?

The Ls7 never made it into a car from the factory. That engine would need to be disassembled and all clearances checked. Better off with an all aluminum Dart 540 for half that price.

 

[rivermobster]

So I'm doing research on an LS7 crate motor I have in my possesion and came across this from a friend today

Can you say scam???

That's one funny looking LS engine!

 

[LargeOrangeFont]

Can you say scam???

That's one funny looking LS engine!

How is is a scam? It looks just like a LS engine from 1970

 

[jetboatperformance]

Can you say scam???

That's one funny looking LS engine!

Chevrolet called several of their engines "LS" prior to the current ls engine family

Collector Car Corner: Solving a Chevy LS7 454 engine mystery

I bought a 69 Camaro from a guy in Texas with an old Chevy crate engine in it called an LS7 Big Block. He installed the LS7 in the car in the late 1980's and the number stamped on the block is TL02XCH09488093.

www.spokesman.com

 

[rivermobster]

Chevrolet called several of their engines "LS" prior to the current ls engine family

Collector Car Corner: Solving a Chevy LS7 454 engine mystery

I bought a 69 Camaro from a guy in Texas with an old Chevy crate engine in it called an LS7 Big Block. He installed the LS7 in the car in the late 1980's and the number stamped on the block is TL02XCH09488093.

www.spokesman.com

Dave likes to call an LS a small block too.

 

[rivermobster]

This is a halfway decent article. It's far from complete, but it clearly lays out how the very first LS1 engine came to be.

Everything You Need to Know About LS, LSX, and Vortec Engines: Specs, History, Swaps, and More

GM’s LS line of engines ranks among the most successful ever produced, and over the years they have become the go-to swap for all manner of vehicles. We’re here to tell you all you need to know about the different variations of this popular engine.

www.motortrend.com

I have pretty detailed spreadsheet I put together when I worked at JMS that covers the subtle differences between all the different LS configurations.

I think I quit working on it when I was up to line 43? It's been a minute or two.

 

[Cdog]

Pretty cool. Did you know they used LS7 454's to start the SR71's? They have a couple of them on display in the museum in Tucson.



The original design was conceived by two Lockheed Skunk Works engineers who had prior race car engine knowledge. In the mid-1970's, the engines of the start carts was changed to Chevrolet LS-7 454's. The Chevrolet big block engines developed 465 horsepower each. Even so, for many years they were still referred to as the Buick's.

In the '80's the AG-330 Start Carts were mothballed and in there place came a Pneumatic Air starting system for the SR-71's. It is true that the start carts were hard to maneuver around. Logistically, a recovery of a Blackbird at another base could be done easier with Pneumatic Air. Garrett Air Research installed the Pneumatic Air starting system in each of the hangers at Beale AFB to accommodate the SR-71 engine starts. The launches were never quite the same without the Buick's or the 454's.

Credit should be given to those people that maintained the AG-330's in the 9th SRW Aerospace Ground Support Section. Along with maintaining all support equipment, they took great pride in maintaining the Start Carts tuned and in tip top condition. A job well done.

 

[coolchange]

I have a high Nickle notched block from my flat. To bad it was decked. Still worth a chunk. Who built those jet starters?- Arlan Kurtis

 

[ElAzul]

Pretty cool. Did you know they used LS7 454's to start the SR71's? They have a couple of them on display in the museum in Tucson.



The original design was conceived by two Lockheed Skunk Works engineers who had prior race car engine knowledge. In the mid-1970's, the engines of the start carts was changed to Chevrolet LS-7 454's. The Chevrolet big block engines developed 465 horsepower each. Even so, for many years they were still referred to as the Buick's.

In the '80's the AG-330 Start Carts were mothballed and in there place came a Pneumatic Air starting system for the SR-71's. It is true that the start carts were hard to maneuver around. Logistically, a recovery of a Blackbird at another base could be done easier with Pneumatic Air. Garrett Air Research installed the Pneumatic Air starting system in each of the hangers at Beale AFB to accommodate the SR-71 engine starts. The launches were never quite the same without the Buick's or the 454's.

Credit should be given to those people that maintained the AG-330's in the 9th SRW Aerospace Ground Support Section. Along with maintaining all support equipment, they took great pride in maintaining the Start Carts tuned and in tip top condition. A job well done.

They killed EVERY available Buick block in America for those starter's. The Air Force pillaged every junk yard and parts suppliers across the US before swapping to the 454

 

[Cdog]

They killed EVERY available Buick block in America for those starter's. The Air Force pillaged every junk yard and parts suppliers across the US before swapping to the 454

Better off with the Ls7 anyway. The king of rat engines

 

[LazyLavey]

It may be priced a bit high

BUT.... Free Shipping!!

 

[Cdog]

It may be priced a bit high

BUT.... Free Shipping!!

Higher than giraffe pussy

 

[fastenuff3]

So I'm doing research on an LS7 crate motor I have in my possesion and came across this from a friend today

i used to buy them in the 1980s for 1700 dollars. in a 1968 Camaro it would run 11.50 easy. i put one in a 73 WESCO true flat bottom it would run 9.50 in the quater mile.

 

[poncho]

I have a high Nickle notched block from my flat. To bad it was decked. Still worth a chunk. Who built those jet starters?- Arlan Kurtis

Thats what's in my flat, the last machinist couldn't understand why I wanted to save it so bad, plus nostalgic reasons.

 

[Bigbore500r]

Can you say scam???

That's one funny looking LS engine!

You been hanging with this guy?

 

[rivermobster]

You been hanging with this guy?

If you say so...

I'll stand down to your greater knowledge of all things GM.

Sorry I didn't come by for dinner. Needed to get my azz home!

 

[DUN]

I've got one in my flat. Purchased new in the early 80's ran a season or two, sat for a decade in a half, ran for another season or two, sat for another decade or two, and then I bought the boat. Fired it up the first time and antifreeze came out the side of the boat so felt pretty good about it. The thing screams but I feel guilty about every pass. Even more so after seeing this thread..

 

[jetboatperformance]

Pretty cool. Did you know they used LS7 454's to start the SR71's? They have a couple of them on display in the museum in Tucson.



The original design was conceived by two Lockheed Skunk Works engineers who had prior race car engine knowledge. In the mid-1970's, the engines of the start carts was changed to Chevrolet LS-7 454's. The Chevrolet big block engines developed 465 horsepower each. Even so, for many years they were still referred to as the Buick's.

In the '80's the AG-330 Start Carts were mothballed and in there place came a Pneumatic Air starting system for the SR-71's. It is true that the start carts were hard to maneuver around. Logistically, a recovery of a Blackbird at another base could be done easier with Pneumatic Air. Garrett Air Research installed the Pneumatic Air starting system in each of the hangers at Beale AFB to accommodate the SR-71 engine starts. The launches were never quite the same without the Buick's or the 454's.

Credit should be given to those people that maintained the AG-330's in the 9th SRW Aerospace Ground Support Section. Along with maintaining all support equipment, they took great pride in maintaining the Start Carts tuned and in tip top condition. A job well done.

Awesome trivia , RDPs brain trust never disappoints