Hello all!
Was looking to put out there on the group chat - does anyone have any suggestions to tune the Carburetor for 1964 Cadillac 492 2 door 429 V8.
Does anyone have any resources they may suggest to tune or re build? I would even consider shipping the carb out to someone that specializes in this sort of thing.
History: The car was perfectly tuned and running like a top in Michigan . I then moved to Colorado and has since been a struggle to get it right. I've taken the car to (2) shops now who have said they could tune, and adjust the setting correctly, but without success.
Any help would be appreciated, as this is step 1 in the restoration effort to get the car to a daily running healthy status.
Thank you
Bill McDonald
bmcdonald@phoenixhaus.com
C: 989 751 2806
Tags:
Bill
I would have the stock Carter carb rebuilt by a shop if needed as it is an excellent carb
The reason I have an Edelbrock is a long story but it is a good replacement for the Carter
The Edelbrock carb is so much like the stock Carter that you can use the Edelbrock tech’s feed back on changing jetting they will recommend
First examine your plugs at operating temp after a ride
The plug color will indicate the adjustment required
The two carb metering rods - are under the two metal flaps—-at the top of the Carter with a screw holding it down - it has a spring action coming out so go slow and careful taking it out
They want to pop up
Do not drop any parts into the carb - you can stuff it with a rag
The two metering rods have numbers on them —give them to the Edelbrock tech’s and they will advise you what numbers to change too
The carb will have to be opened up if jet changing is needed - those jets are also numbered
Front jets that have the metering rods - are the called primary jets
The new parts needed can be purchased over the counter at your local auto supply
I used Advanced Auto for mine but was a number of years ago
Plugs SB a brown paper bag color when right
Whitish is lean and darker is to rich
I would make jetting adjustments - only- after a complete fresh tune up is on spec and the carb mixture has been properly adjusted— then plugs examined for condition after a bit of riding to evaluate the engines overall performance
The jetting adjustment is the last fine tuning tweak you will make to the tune up
Most of our year Cadillacs stock carbs will need to go a bit richer on the primary jets mixture due to the ethanol in the fuel we use today
Enjoy
Man Tony &Ginny!
You're the best - that's really helpful. I am going to be kicking off that service work here shortly, and I will keep you posted on the progress. Thanks for the helpful and knowledgeable breakdown on what works etc.
Have an excellent evening
Sean O'Hare Online
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