Should I buy a remaned stock carter for my rebuilt stock 401 bored 60. Or should I put aftermarket Edelbrock 750 carb on it or some other carb. Let me know,don't wanna waste my money an get something that doesn't work properly. I know how to fix the linkage to work on the Edelbrock now but still don't know if that would be the right choice cfm wise an I've heard I might have to recurve distributor too work right with the 750. I want the most h.p. I can get, don't really care about gas mileage. If the rebuilt carter is a better idea though I will stick with it. Let me know, thank you. Oh an I can't afford efi right now.
i put a 750 edelbrock and a open air cleaner on a stock 1966 gs 401 with 2.93 gears. picked up 2.5-3 tents. if i remember went one size smaller jets primary and secondary.
If worse came to worse you could change the primary throttle shafts & completely eliminate the need for adapters & the related problems they can cause. Now ALL your linage problems will be a thing of the past. A PROPER distributor re-curve is one of the MOST beneficial (besides the size of the carb) things that can be done to a "Nail". I do re-curving & convert to a one wire electronic ignition if wanted. Tom T.
How do I eliminate the primary throttle shafts, an get the carb to work properly? Oh an I have here also an air fuel ratio gauge is a good idea an if so what's the most economical one to get so I have security of knowing I'm running good an not to lean. Thank you
You have to remove the throttle shaft from the original & install it in the Edelbrock carb. If you don't know what your doing you can cause yourself much grief. Do a search on how it's done. It's really not that hard. The original jetting will be TOO RICH. But won't hurt anything until you can get it dialed in.
Got a 750 edelbrock on the way, do you have that info with some pics on how to do the throtle swap from the carter to the new edelbrock. I did a search an have not found it yet,thanks.
1966buickgs: search my threads and you'll find the jetting specs I used when I installed a 750 CFM Edelbrock on my stock '64 401. I ended up going two stages leaner than the out of the box jetting, but I am in the mountains of NC at or above 2000 feet most of the time. In order to get the jets and rods needed I had to buy the Edelbrock jet kit and the rods separately. I'd suggest you do the same so you can swap jets as needed. I ended up using the richest accelerator pump setting.