427/390 Holly
#1
427/390 Holly
Hello everyone. I have a 1969 vette 427/390 hp that i've had for 12 years but never worked on. My question is that I realize that the Qjet was the origional carb that came with this engine but a holly carb was offered as an option. The numbers on the carb are 6210-3, 4261. Is this the correct replacement? I'm having problems with my idle where the mixing screws have no reaction totally in or out. I don't want to spend the time or money getting this carb rebuilt if its not the correct one.
#2
Race Director
Welcome to the forum. I've never seen or heard anything indicating that your motor (same as mine, by the way) ever came from the factory with an optional Holley instead of a Q-Jet. Can you post the source where you got that info?
#4
Burning Brakes
No optional carbs offered for the L36, or any engine for 69. The 6210 is the Holley aftermarket "replacement" for the Q-Jet rated at 650CFM. Great carbs by the way. I've run them on 327's, 396's and even 427's and they really deliver.
The 6213 is the big block version of the 6210 and again, is an aftermarket replacement for the Q-Jet. This one is rated at 800CFM.
Ed
The 6213 is the big block version of the 6210 and again, is an aftermarket replacement for the Q-Jet. This one is rated at 800CFM.
Ed
Last edited by restoman1; 08-18-2012 at 10:29 PM.
#5
Thanks for the fast reply. I am having my carb looked at because of rough idle problems. I have not owned the car long so it probably just needs a good tune up. Hopefully just a carb kit and spark plugs.
#6
Melting Slicks
I have that Holley carb but was told by Holley that my particular one was for 68 Corvette or Chevelle. Someday I should ebay it, because I've zero use for a spreadbore Holley carb. Check that, it's a 6211. The guy I bought it from had it on a jet boat with a 427 in it. I bought it for a Buick project, but then abandoned that thought when I realized what a bast*** step-child it was. Neat concept, poor execution.
Pictures to come shortly.
Pictures to come shortly.
Last edited by SuperBuickGuy; 08-19-2012 at 12:20 AM. Reason: pictures
#7
Thanks for all the info. I found some websites that stated the holly was an option. One site was http://www.1969-corvette.com/engines.asp.
#8
Tech Contributor
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GM never used a spreadbore Holley on any car produced.
Lars
Lars
#9
Race Director
Thanks for all the info. I found some websites that stated the holly was an option. One site was http://www.1969-corvette.com/engines.asp.