Choose a carburetor for 454 Chevrolet engine

WILLIAMSTHEME

MEMBER
1985 CHEVROLET SUBURBAN
7.4L
V8
4WD
AUTOMATIC
1,200,000 MILES

Hi,
i have the vehicle listed above, I decided to change its engine so, I got 1993 BBC with code 10114182.( It is OEM and standard with 0 pistons) it was injection then I changed the intake manifold to use the carburetor system. I live out of the U.S and now I am going to order a new carburetor for this engine from online shopping. But I do not know what kind and what CFM I should order for this engine, I attached the image of the engine too.
please let me know about suitable spark plugs and the MSD distributor for 454 chevrolet engine.
could you kind to me and give the models or links for 1-carburetor, 2-spark plugs, 3-MSD distributor.
thanks ahead

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1 Reply

HMAC300

MECHANIC
48,601 POSTS

750 or 850 cfm will work well with this engine unless it's highly modified then you will need to bump to a 1050 or 900 you can try holley or edelbrock for carbs as I think you are going to drive it on street. You can go to msd. Com for your dist and contact them. For plugs these used to take ac 44 heat range but I don't know what the heck they are now. I found this online and should give you an idea I listed the car as a 1983 with a big block see pic

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