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09-25-2015 #1
Need advice on carb selection....
I recently acquired a 66 Chevelle that has a 454 in it. It has a very stout cam, has Rectangular port 69 Corvette heads, and open plenum Weiand intake and a AED 850 carb on it now. This is a 4 speed car if that matters much. I just did a rear gear swap to make the car more drivable to my liking. The guy liked stop light to stop light cruising and had 4:88's in it!
So with 3:55's the car is definitely more drivable. With the cam that is in it I need to pull away from a light or stop sign with the RPM's up higher then I like. I have been told by many to swap out the intake and carb to a duel plane intake like and Edelbrock RPM or something like that. So that is next, but what about the carb? What do I really need?
Planning to most likely get a Holley, but which one? Is a 750 the only way to go hear? Is the Street Avenger 670 too small?
Remember, this is a street car. I will never take it to any type of track, drag or autocross. Cruise nights, local car shows, out with friends etc.
Appreciate any advice you guys can offer.
Thanks,
Glenn
Glenn
1955 Chevy BelAir
1951 Chevy 3100
1987 Chevy Silverado
My last project....
https://www.pro-touring.com/threads/...my-72-Maverick!!
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09-25-2015 #2
Swapping the intake and carb may help increase bottom end torque, but with a big block you will already have plenty. It sounds to me like maybe you have too much cam for the street. Do you know the cam specs?
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09-25-2015 #3
http://www.gtsparkplugs.com/CarbCFMCalc.html
Not the end all solution for picking a Carb but maybe a guide to get you in the ballpark..
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10-15-2015 #4