The Supercar Registry - So what's the deal on L79s?

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- - So what's the deal on L79s? (https://www.yenko.net/forum/showthread.php?t=149899)

L79s were still available in Chevelles, and Novas in 68 at 325 HP. Both ran very well. Would blow the doors off most SS Chevelles up to the L78s and give them a good run depending on rear end ratios.
The early Chevy lls were the prodigy of Bill Thomas who started dropping 375 hp Corvette 327s transplants in. The "Deuce" legend started with those cars and continued with the factory L79s in 66. They were one of the most feared street cars prior to the big dog LS6 Chevelles.
Yenko redefined the Chevyll L79 with the LT/1 350 70 Deuces. Neither one was much afraid of any semi stock car on the street.

Wasn't the '68 engine slightly different? Like no aluminum intake anymore?

Yep, I had one of '68 L79 Novas and despite their 11:1 compression and famous #151 camshaft, it had a cast iron intake and Q-Jet perched on top of it (with its original 14x3 open element air cleaner). It was a one-owner car (non-SS) with factory buckets, Muncie 4-gear, 3.55 12-bolt, and a set of Goodyear Blue Streak slicks in the trunk!

Quote:

Originally Posted by 442w30 (Post 1408468)

Wasn't the '68 engine slightly different? Like no aluminum intake anymore?

You are correct the 68 version used a cast iron intake...interestingly enough it was still rated 350hp in the Corvette, but 325hp in the Nova and Chevelle.

The L79 is one of those engines that has an almost mythical quality...it was a real runner. As others have mentioned, many a big block Chevelle was surprised by this little power house :biggthumpup:

-wilma

My old 68 L79 nova I restored ran very well. Was by far the fastest small block I have ever driven.

It has been a myth to this day why they only made 6 or 7 {67} Chevyll L79

Here is a factory order sheet for 66 and 67 Chevyll

66 Chevyll with L79 on order sheet

https://photos.app.goo.gl/Tbn8T16K8eKw8q477

https://photos.app.goo.gl/NFPkLoUXeNGXnNuM7

67 Chevyll without L79

https://photos.app.goo.gl/87cUB7aeDFXcydYW6

Here is Jacks 67 Chevyll L79...very rare car. One of 6

Lee with all due respect I disagree that the '66 442 was a "great distance behind" the '66 GTO. The base 400 that year had 15 horsepower and 9 ft/lbs of torque on the base GTO 389. The L-69 Tri powered 400 cars were every bit the equal of the Tri powered GTO's and the W-30 (yes very rare with only 54 built) had similar if not better performance than the Royal Bobcat cars out of the box. Don't forget the 442 came equipped with a rear sway bar standard for far superior handling while John Delorean didn't find it necessary on the GTO. The cars were not marketed and promoted like the GTO's were so sales lagged behind. The styling and interiors were better IMO on the Pontiac but all in all the 442 for '66 was every bit the GTO's equal that year. Just my .02..

Quote:

Originally Posted by Lee Stewart (Post 1408434)

As you stated . . . not to compete with the brand new 1966 Chevelle SS396. The Muscle Car Wars were just getting up steam for the model year 1966. And it was all about big block engines with lots of horsepower and torque.

Both Chrysler and Ford really weren't contenders yet - they would get serious the following model year (at least Chrysler would. Ford waited until 1968). Pontiac lead the way with the GTO followed by (a great distance behind) Olds with the 442.

The accepted definition of a Muscle Car is a big engine in an intermediate sized car. Chevy put it's toe in the water so to speak with the 1965 SS396 Malibu - to get media and dealer reaction- all very positive.

Chevy knew it had a great engine with the L79. But marketing felt that big blocks were where the Muscle Car sales would be . . . and they were correct. If you wanted handling and a Muscle Car, the L79 would be a great choice as we all know that big block cars are nose heavy. But at the same time you had to give up many of the features that became standard on a Muscle Car like hood treatment, stripes, redline tires and badges.

The 1967 model year, for Chevrolet, was all about the brand new Camaro. Chevy wasn't going to offer any models that would compete with it if they could help it. So the Nova SS got a max engine of 275 hp, the full size Chevrolet had a single 427, the 385 hp engine. They couldn't cripple the Chevelle like they did those cars (though Chevy did hold back the L78 option for most of the model year) because sales were way up as were sales of the GTO which Chevy looked at as it's main competitor.

Small block Muscle Cars only became popular when the insurance companies started raising the premiums on BB Muscle Cars into the stratosphere.

AFAIK the L79 was never an option on the 1967 Nova SS. At least a published option. How those handful of cars made it out of the factory - I don't know.

Can't seem to post a pic but ran a 66 L79 in our Nomad. Was my daily driver throughout the 80's. Engine got tired (I ran it pretty hard those years) so I parked it about 1989-ish. Still have it. Pulled the L79 and rather than rebuild I installed an original HE code low mile 327 my father bought from a wrecked 66 vette back in 1971 along with it's matching M-21. He installed an old Sig Erson solid flat tappet back then and the engine sat. That engine/trans now resides in the Nomad. Mainly have BB stuff here but have always been a huge 327 fan.

Quote:

Originally Posted by GM Powertrain (Post 1408486)

I was referring to sales:

Pontiac sold 96946 GTOs in 1966 while Oldsmobile sold 21997 442s.

Quote:

Originally Posted by 442w30 (Post 1408468)

Wasn't the '68 engine slightly different? Like no aluminum intake anymore?

Correct. Also had the larger journal crank shaft which helped them live longer at higher RPMs.