I knew I read it somewhere..

Wikipedia can be really good but at the same time I don't know.
This is were Mr. Manner mentioned he pulled 15 random 455 Stage1's from the line and the lowest was 376hp.

Reading about the 68-69 GS 400 it mentions with the low TH400 1st gear it was a faster car of the line than other comparable cars.
Did not the GTO, 442 have a TH400 also

 

Thanks Larry, I just cannot link sights at times..

 

You do know anyone can edit a Wikipedia article, right? Heck, that's my car I put on there in 2006 when there were no pictures. I first read that page and deleted/corrected a LOT of bogus information. Only 3 GSXs registered and some doofus that kept putting nonsense about Pontiac heads being the basis for Stage 1 heads.

 

"The relatively unknown, very expensive, and very rare 1970 GS 455 Stage 1 ...."
Wasn't that expensive of an option....or that rare....
From the Wiki writeup.....

 

No I didn't know
So thats your red GS
I zoomed in that picture of it like 50 times! I was trying to get a good look at the rear spoiler and how it fit and looked on a non GSX car.
This was for my if you can afford any car thread here and mind was a "Diplomat Blue" 70 GS and how would look with one..

 

There, I fixed it. That easy.

 

I will have to ask Dennis about this, but it was my understanding that all engines tested and rated, were spec engineering motors, not production pieces. The 376HP number was derived with the use of a special HD service package intake gasket, that blocked the heat riser off. One would have to accept the fact that the engineers took 15 motors off the line, and replaced the intake gasket on all of them, and that don't pass the smell test.

Furthermore, 1970 Stage 1 development was old news by the time they started producing these engines. I don't know the exact date but I suspect that development happened in 1968, or very early in 69, one would assume they cast a number of prototype 455 blocks for the engineering department to play with. By Fall of 1969, they were doing work for the 71 model year, and there was a ton of changes made, as you know.

The numbers they have are right, but the rest of the story seems hokey... in the fast paced production world of an assembly line, there are no warehouses full of engines sitting around.. they are going into cars, about as fast as they can be built. Date codes are often just a couple weeks apart, between block casting, and invoice date of the car. Especially in Flint, where everything was built on site.

I am not saying it did not happen, mind you.. I don't know, I turned 4 in 1970, but it smells fishy..

But I know the guy to ask, he was there..

JW

 

You mean like my dad's car this past Thanksgiving. A true 1970 GS Stage 1 Diplomat Blue with original 70 Spoiler added.

 

If there is any other incorrect info on the Wikipedia page and nobody else wants to do it, point it out with the correct info and I'll update it to the group's liking.

 

WoW! Just WoW!
The million dollar question, who added the spoiler?

 

My dad added the spoiler (purchased in the early 70s from a dealer). Its been on the car since I can remember. When the car was repainted recently we confirmed the spoiler is in fact a 70 vs 71/72.

 

I don't know what happened back then with those engines. But based on my experience in the automotive industry, I 100 percent agree. If they are churning out production engines/parts, the development work is long done. Any changes during a production run are usually only to fix a newly discovered problem.

 

What is the difference between the 70 and 71/72?
It will be kinda hard to find side by side pics of a 70 GSX and 71 GSX.

 

Thanks Larry, I got side tracked and just got to seeing this.
Still can't really tell the difference but need to take a better look.
I know the stands are a bit longer on the 71/72 but not sure of the over all spoiler yet..
I need to find a pick of a GSX only National show..