1970 chevelle SS 427?? [Archive] - Chevelle Tech

: 1970 chevelle SS 427??


DuNLoP
Aug 16th, 10, 9:28 PM
Hi everyone,

I would like to know if if it's possible a 70 chevelle ss from the factory? Give me some details please. Thanks

Keith Tedford
Aug 16th, 10, 10:19 PM
For the '70 production run there was the L34 and L78 to start with. Once the LS6 came along L78 production ended. '69 was the last year for the 427.

DaleM
Aug 17th, 10, 12:58 PM
And the 427 that was sold in the 1969 Chevelle was a COPO special order in a Malibu, not an SS-optioned Chevelle. The 427 engine was never offered as a standard factory option in any Chevelle.

DuNLoP
Aug 17th, 10, 2:26 PM
This is what I thought, but was it possible to order a 70 chevelle SS with a 427 engine like a L88, a ZL1 or any other 427? A kind of special order?

DaleM
Aug 17th, 10, 2:47 PM
Again, no. For the reason's I stated as well as Keith. There was no 427 Chevrolet engine made after 1969. In 1970 the GM ban on engine sizes was lifted in a-body cars and the 454 replaced the 427 in ALL Chevrolet lines.

Keith Tedford
Aug 17th, 10, 3:03 PM
When we bought our COPO Chevelle, it was just a matter of going to a dealer, doing the COPO order and you got your car. The trick was knowing about it. Any dealer could do it but most didn't seem to be aware of it or weren't interested. We found out about the COPO deal through a guy who worked in the Oshawa main office at the time. His brother and two of us ended up getting our COPO cars through Beare Motors. Sort of like being in the right place at the right time. The COPO system had been used for fleet orders and such with special equipment packages, mostly trucks and the like so a fleet order of COPO cars wasn't all that big of a deal for GM. There is a COPO catalogue that shows all the oddball truck and other package stuff. The COPO cars aren't even mentioned in it. Just a little info from my experience with the COPO cars.

beachbum29
Aug 19th, 10, 3:03 PM
to my knowledge from what i've read in old magazines, I only know of Motion doing camaro's, and maybe vega's? and Yenko doing the Yenko Duece. The motion camaro came in stages up to I believe a stage III with a funky paint job, L88 hood, and built 454, the vega's i'm not sure about, and the Yenko Duece for 70 was the LT1 solid cammed small block. All big block cars etc all got the 396/402, or 454, no more 427's.. Wasn't somebody doing big block vette's in 70 too? I'm only going by literature i've read, and some old hot rod mag's that I have from that era including a Motion stage III big block camaro..

joe58
Aug 19th, 10, 5:28 PM
No factory built 427 cars in 1970 but Motion Performance did build some.

They installed a L88 427 in a 1973 Chevelle and put 427 engines in other cars as per customer request.

In the early 70's, Chevy sold 427 engines at good prices to clear out the inventory so was less expensive to install the 427 vs build a 454.

1973 427 L88 Motion Phase III Chevelle

http://www.chevelles.com/forums/attachment.php?attachmentid=18455&d=1232636349

copo-2
Aug 20th, 10, 4:53 PM
Hi everyone,

I would like to know if if it's possible a 70 chevelle ss from the factory? Give me some details please. Thanks

As has already been explained, 1970 was the year the 454 was introduced canceling the 396 & 427 production in RPO Chevelles. However, there were still a handful of dealers who would build a new car to your specs. First,in the 1972 edition of Motion Performances catalog, is a Phase lll Chevelle with options listed. In the same catalog is a list of interesting engines that were sold through them, of which, the 427 is still available to anyone who might desire? I feel that 1970 would have had the 427 available with different options through Motion Performance and some other Super Car Dealers, also? It was pretty crazy in those days, being able to get most anything you desired, including a ready made race car?

http://i211.photobucket.com/albums/bb303/DH427Nova/MotionPhaselllChevelle.png

http://i211.photobucket.com/albums/bb303/DH427Nova/MotionsRacingEngines1.png

http://i211.photobucket.com/albums/bb303/DH427Nova/MotionMailOrderMotors2.png

Xplantdad
Aug 20th, 10, 5:31 PM
Hi Ray! Thanks for the great information. I hope that life is treating you well...Are you going to MCACN in November?:thumbsup:

DaleM
Aug 20th, 10, 5:50 PM
As has already been explained, 1970 was the year the 454 was introduced canceling the 396 & 427 production in RPO Chevelles.

The 396 didn't get canceled in 1970 as such but it did morph into two different 402 engines. The base SS396 L34 version with 350hp for 1970 only and the LS3 lower performance version that lived on until at least 1972. GM had so much invested in the SS396 mistique that they still called the L34 402 a 396 for marketing purposes. :thumbsup:

joe58
Aug 21st, 10, 9:05 AM
Early 1970's Chevy engines can be confusing

I guess Chevy didn't want to use the name "SS402" so they still called the 402 cu in SS Chevelles the "SS396" but in a non SS you can get a 402 big block called a 'Turbo-Jet 400" and you can also get a small block 400 they called the "Turbo-Fire 400"


Also in the early 1970s, Chevy Hi Po parts dept. sold the aluminum 427 ZL1 engine and a 430 Can Am engine that looked like the ZL1 engine but used a different big bore internal block casting.

Many people still confuse these engines today.

69bu
Aug 21st, 10, 1:50 PM
No factory built 427 cars in 1970 but Motion Performance did build some.

They installed a L88 427 in a 1973 Chevelle and put 427 engines in other cars as per customer request.

In the early 70's, Chevy sold 427 engines at good prices to clear out the inventory so was less expensive to install the 427 vs build a 454.

1973 427 L88 Motion Phase III Chevelle

http://www.chevelles.com/forums/attachment.php?attachmentid=18455&d=1232636349

That car belongs in the side pipe thread. I kinda like it.

DaleM
Aug 21st, 10, 2:55 PM
and you can also get a small block 400 they called the "Turbo-Fire 400"

The RPO LF6 Turbo-Fire 400 (small block with 2-bbl) wasn't available in the Chevelle but was in the Monte Carlo (for 1970 only) and passenger car line in 70 and later.

A lot of shop manuals back in the day often distinguished them as 400-4bbl for the big block and 400-2bbl for the small block causing confusion.

copo-2
Aug 23rd, 10, 4:44 PM
Dale,

You are correct, was thinking in terms of the L-78 & L-89 production.

joe58
Aug 24th, 10, 9:56 AM
The RPO LF6 Turbo-Fire 400 (small block with 2-bbl) wasn't available in the Chevelle but was in the Monte Carlo (for 1970 only) and passenger car line in 70 and later.

A lot of shop manuals back in the day often distinguished them as 400-4bbl for the big block and 400-2bbl for the small block causing confusion.



The 400 SB was available in the Chevelle 1974-76 according to this info site

http://en.wikipedia.org/wiki/Chevrolet_Chevelle

They list a 400 2BBL which I believe is a SB and list a 400 4BBL but they are not clear if it is a 400 SB or 402BB.
The Chevelle last year BB was 1975 so the 1976 400 has to be a SB but it is not clear if it was 2BBL or 4BBL.

One listing shows the last year for the 402 as 1972

The GMC Sprint info is more clear where they used a 1974-76 400 SB in both a 2BBL and 4BBL according to this info site here

http://www.chevelles.com/sprint/

DaleM
Aug 24th, 10, 11:45 AM
Stand correct, but just a little. The LF6 400-2bbl was available in the 74 Chevelle as well as the LT4 400-4bbl. Both the LF6 and LT4 were small blocks but the LF6 (2bbl version) ceased to exist after 74 in Chevelles and only the LT4 (4bbl version) remained - at least according GM production figures I have.

To be honest, WikiPedia would be my last source for sound information since it's community driven and anyone can write to it. On the page you site for example, if you read under the heading of First Generation (1964-1967) and Chevelle SS it states, "...Early 1964 and 1965 Chevelles had a Malibu SS badge on the rear quarter panel (part of the Z16 option priced at US$1,501 in 1965,[1] (http://www.chevelles.com/forums/#cite_note-0) had the emblem on the front fender, as well as distinct in-house style numbers, 737 for the hardtop, 767 for the convertible;[2] (http://www.chevelles.com/forums/#cite_note-1) The $162 Super Sport package was available on the upscale Malibu two-door hardtop and convertible models..."

Are they talking Malibu SS or the Z16 option here?

First, their was no Super Sport package on the Malibu. The Malibu SS was not an option on the Malibu but rather a separate series (138xx vs. 136xx). Second the "in-house style numbers" of 737 and 767 did indicate a Malibu SS but so did 837 and 867. Why reference only two of the four unique Malibu SS series designations and "in-house" leads one to think these were not used in promotions or sales but rather internall to Fisher Body or GM yet both (or rather all four) appear on Fisher Body trim tags as well as GM VINs. I don't have base prices on 1965 Chevelles but it's possible the $162 difference was between the base 136xx Malibu and corresponding 138xx Malibu SS models.

That particular page is filled with so many errors it'd take another article to fix them. In the same paragraph it jumps to the 1966 model year and states, "All SS transmissions were floor-shifted." Guess they forgot about the column shifted Powerglide in the SS396. Under New Body 1966-1967, it says, "Available engines were a 327-cubic-inch V-8 instead of either of the sixes, or the mid-level option, a 220-horsepower 283-cubic-inch V-8." Either misleading or wrong depending on how one reads it as two L6 engines were available and is the 283 (of which there were two in 1966) available or not; are they part of the "instead of" wording or part of the "available engines" wording?

In the 1967 paragraph some options seem to be touted for 1967 such as air lift shocks, headrests and special instrumentation, it leads one to believe these were 1967 innovations when they were available in 1966 as well. Also states, "Buyers selected from no less than six transmissions: two three-speeds, four-speed, overdrive, and two automatics." There were three 3-speeds (Saginaw for L6 and 283, Saginaw for 327/275hp and H.D. Borg-Warner), four 4-speeds (Saginaw for the 283, Saginaw for the 327/275hp, and the M20 plus M21 Muncie). Looking under Changes for 1969-1972 one sentence states, "The Super Sport included a 265 or 325-horsepower 396-cubic-inch V-8 beneath a double-domed hood." :noway:

Point is, almost anyone can submit to and write for WikiPedia with absolutely no verification of facts. I've written a few fixes myself but gave up trying to fix stuff like this. I have a tough enough time keeping my own ChevelleStuff.net site up to date and correct. :D

I was following the 1970 thread and what was available in 1970. Like many others I mistakenly stop thinking "Chevelle" after 1972 and I shouldn't considering I'm trying to expand ChevelleStuff.net to the 73-77 years as I can. :thumbsup:

Dean
Sep 2nd, 10, 5:33 PM
I agree WikiPedia is certainly not the place to get factual information about anything. There has been so much misinformation written in books and magazines AND posted on the net, (including on this site) that makes actual true facts very difficult and confusing. It seems to me that many people base their "facts" on rumors rather than on documentation.

Thank goodness for people like Dale and a few others that try to educate us all. http://chevellestuff.net/ is the place to get the actual true information that Dale works so hard at to seek out.

joe58
Sep 3rd, 10, 10:07 AM
WikiPedia is not the place for info but on the 400 Chevelle they were more correct then what was posted here.

The 400 SB was available in the Chevelle 1974-76

Thought I remembered 400 Chevelles from back in the day but was not sure so I googled it.

The WikiPedia info looked pretty good and was similar to the GMC Sprint info that I also posted a link to.

I also found a listing showing the vin letter code for engine size and that also shows a 400 small block but did not show the years.

Dean
Sep 3rd, 10, 10:29 AM
True but that has nothing to do with this topic, does it? "1970 chevelle SS 427??"

That topic title would be "400 small block in a 74 Chevelle?" wouldn't it?