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I am looking at picking up another 68 ...this one has a 327/350 with the HT block. What is confusing me is the carb. The car is a mid-October build, the block is matching numbers to the VIN, but this Holley that is on it must be an add on. The car has been sitting for a while. The numbers I see on the carb are L-7456 with a date code of 1608, telling me it was from june 9th 1968.
I guess my question is "was this ever a production carb?" or could this be an early holley service carb....
I expected to find a rochester quadrajet 7028207.
Hi S,
I believe your 68 327/350 would have originally had a Q-Jet manufactured by Rochester or Carter on it; not the Holley shown in your photo.
I believe you're looking for a Q-Jet with a Chevy. number of 7028219; the 207 Rochester Q-jet you mention would be for a manual transmission 327/300.
Regards,
Alan
Maybe I'm wrong, but I've read on many sources that the 327/350 L79 in '68 would have a Holley four-barrel.
On '68, only the base 327/300 was equipped by a Rochester carb
Hi P_i,
The information I'm looking at indicates Holley sourced carbs were used on 427/400, 427/435, and 427/430 engines during the 68 model year.
Perhaps those sources you listed (I could only link to the second of them) are right?
I think perhaps the mention of the Holley in the links refers to it being used on earlier (65-66?) on ChevyII 327/350 engines?
Definitely getting out of my range of knowledge here!
Regards,
Alan
...I've read on many sources that the 327/350 L79 in '68 would have a Holley four-barrel...
How many is "many"? They are incorrect. Alan is correct regarding the Quadrajet for the L-79. The only smallblock C3s with Holley carburetors were the LT-1s.
Last edited by Easy Mike; Jun 16, 2016 at 01:56 PM.
Many was maybe... three, four times?
Just for the sake of argument, some time ago I've found the first link (supercheavy) where I've read that:
As one of a gazillion Chevy high-performance guys who grew up in the late '50s and '60s, the 1965-1968 L79 327 (rated at both 350 hp and 325 hp) was for many the "Best Overall Chevy Small-Block of the '60s." Yes, it only had a single inlet, 585 Holley four-barrel carb (also rated at 600 cfm), but everything else was right on. Even though it had the first-ever high-performance hydraulic camshaft, if Grandma could handle a manual transmission, she could drive an L79 anywhere-and with a smile, too. We always thought the carb was smallish. A 750 Quadrajet would have been perfect.
BUT, just because I trust everyone else more than myself here,
I had a look at Original Corvette 1968-1982 by Tom Falconer and it is listed with the Q-Jet... so it's ok. Not completely my fault maybe
Last edited by Proton_ita; Jun 16, 2016 at 03:12 PM.
Maybe I'm wrong, but I've read on many sources that the 327/350 L79 in '68 would have a Holley four-barrel.
On '68, only the base 327/300 was equipped by a Rochester carb
The best reliable source is GM. Here is a link to their archives for the 1968 Corvette. The PDF page is 36 and the 327 only used the Quad. All C3 years are available on this site.
That Vettefacts Is definitely wrong about the Holly on the L-79.
I might as well add do NOT believe these wet behind the ears car magazine writers saying that people liked the 68 convertible more than the coupe! They say that is why there are only one third of production are coupes in 68. You could not buy a 68 coupe until the end of December 1967, due to the problem of redesigning the car after the one piece TARGA roof panel did not work out and GM had to design the worlds first T-top to replace it.
Many people had coupes on order and due to the long delay, gave up and changed to a convertible, to just have a new, nothing else looked like it back then, 1968 Corvette. Lou.
Correct 1968 L79 carb?
