Ray Allen versus Jack Werst '1970 SS/EA Showdown'

Dan Bennett · 08-07-2011, 09:50 PM

Thanks for all the replies.

I didn't remember that it was allowable to change the intake. Chevy had a really good one for the time that was used on the 375 horse stuff and it would have worked well. It just wasn't the one the factory used on the 450 hp piece.

The thing with the stock LS6 piece was that it had almost no rise whatsoever, probably a lot less than even the low hp cast iron parts.

According to the info I've seen, the LS6 was designed for the 1970 Corvette and was going to be the logical progression for the 427/425 and 427/435. Very close to model launch, the engine was killed for the Corvette but released for the Chevelles. That flatness was so it would clear the hood of a Corvette but the beancounters wanted to use the intake since it had been tooled and the investment had been made.

I've never seen the originals, but there are GM materials floating around showing an entire family of 454s in 1970, including the LS7 which was slated to replace the L88 and also a tripower 454 with big heads and solid lifters. The insurance thing was getting too hot and GM withdrew the engines before they were ever put into production.

So the top of the line Chevelle got an intake that looked like it belonged on a Olds 350 2bbl and the Corvette maxed out with a hydraulic 390 hp small port engine in 1970.

And yes, the fiber optic thing was a joke but I have seen some strange options on "factory supplied" cars.

08-07-2011, 09:50 PM	#14
Dan Bennett Member Join Date: Jun 2007 Posts: 439 Likes: 853 Liked 595 Times in 136 Posts	Re: Ray Allen versus Jack Werst '1970 SS/EA Showdown' Thanks for all the replies. I didn't remember that it was allowable to change the intake. Chevy had a really good one for the time that was used on the 375 horse stuff and it would have worked well. It just wasn't the one the factory used on the 450 hp piece. The thing with the stock LS6 piece was that it had almost no rise whatsoever, probably a lot less than even the low hp cast iron parts. According to the info I've seen, the LS6 was designed for the 1970 Corvette and was going to be the logical progression for the 427/425 and 427/435. Very close to model launch, the engine was killed for the Corvette but released for the Chevelles. That flatness was so it would clear the hood of a Corvette but the beancounters wanted to use the intake since it had been tooled and the investment had been made. I've never seen the originals, but there are GM materials floating around showing an entire family of 454s in 1970, including the LS7 which was slated to replace the L88 and also a tripower 454 with big heads and solid lifters. The insurance thing was getting too hot and GM withdrew the engines before they were ever put into production. So the top of the line Chevelle got an intake that looked like it belonged on a Olds 350 2bbl and the Corvette maxed out with a hydraulic 390 hp small port engine in 1970. And yes, the fiber optic thing was a joke but I have seen some strange options on "factory supplied" cars.