'70 454 Carb Replacement Thoughts?
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,226
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From: Dallas
2022 Corvette of the Year Finalist -- Unmodified
2020 C3 of the Year Finalist - Unmodified
'70 454 Carb Replacement Thoughts?
My original carb is coming off the '70 LS5 probably to be rebuilt. I dont want to wait as long as it is going to take to ship the carb away and have it rebuilt and shipped back so I am looking for any experience anyone here has with a replacement carb that is very suitable and fits without problems. Was looking at the Holley 770 Street Avenger but am told it wont fit properly. Does anyone here have a replacement carb on this same engine that you would recommend?
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,226
Likes: 807
From: Dallas
2022 Corvette of the Year Finalist -- Unmodified
2020 C3 of the Year Finalist - Unmodified
Thanks... I went ahead and ordered a rebuilt Rochester for the same model (7040205) to use while mine goes for rebuilding... after some researching of cost, clearance of hood etc.. it just seemed the best way to go for a guaranteed easy swap out.
Last edited by jgilevettes; Jan 14, 2020 at 08:45 PM.
Team Owner
Joined: Jan 2006
Posts: 37,637
Likes: 3,118
From: Crossville TN
If the original carb has not had a prior rebuild (so that the parts have not been altered), just get a carb rebuild kit and do it yourself in a day. If it has worked well in the past and it still has the original parts, should be an easy redo.
Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,226
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From: Dallas
2022 Corvette of the Year Finalist -- Unmodified
2020 C3 of the Year Finalist - Unmodified
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
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From: New Braunfels Texas
I would have found a 4175 used, maybe on E-bay or a new one.........they work very well and are easy to refurb and adjust.
Jebby
Team Owner
Joined: Jan 2006
Posts: 37,637
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From: Crossville TN
That's true, if the carb has had prior rebuild work done to it. But, if you know that it has the same configuration as when new, those issues are [generally] not in play. If the carb didn't work properly when new, the dealer would have replaced it under a warranty repair many years ago. However, if you know that this carb has been "worked on" in the past, doing the rebuild yourself is not a good option.
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
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Thread Starter
Burning Brakes
Joined: Mar 2014
Posts: 1,226
Likes: 807
From: Dallas
2022 Corvette of the Year Finalist -- Unmodified
2020 C3 of the Year Finalist - Unmodified
That's true, if the carb has had prior rebuild work done to it. But, if you know that it has the same configuration as when new, those issues are [generally] not in play. If the carb didn't work properly when new, the dealer would have replaced it under a warranty repair many years ago. However, if you know that this carb has been "worked on" in the past, doing the rebuild yourself is not a good option.
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
He is the only person that I allow to work on the car and has my full trust.
Dr. Detroit
Joined: Mar 2012
Posts: 10,097
Likes: 4,027
From: New Braunfels Texas
That's true, if the carb has had prior rebuild work done to it. But, if you know that it has the same configuration as when new, those issues are [generally] not in play. If the carb didn't work properly when new, the dealer would have replaced it under a warranty repair many years ago. However, if you know that this carb has been "worked on" in the past, doing the rebuild yourself is not a good option.
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
To the OP: Surely you have someone that does have basic mechanical skills whom you can team-up with for this effort.....
Jebby
Race Director
Joined: Jun 2000
Posts: 10,046
Likes: 675
From: FL
Lars is the man you want rebuilding a Q-Jet. Your buddy may be a master mechanic at Firestone but cars have not been equipped with carburetors for over 30 years. Lars is an expert on the Q-Jet.