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383 intake/carb suggestions

Steve009

Steve009

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hi everyone,

Looking for some intake/carb suggestions for my 383 4 speed 64 Plymouth. I have the 906 heads and a mild cam in it already. I'm looking for decent torque in the 2000-5500 rpm range. It's not a race car at all only street driving but I'd like the car to have a decent pull (just for fun and to scare the girlfriend :) ). The engine isn't bored at all. No edlebrock parts please. I'm thinking weiand team g intake and a 650 Holley ultra double pumper. Thoughts? Suggestions?

Thanks,
-Steve
 
not knowing what gear you are running makes a hard call...if you are running a hiway gear you may want dual plane intake and a 750cfm vacuum secondary carb. Double pumpers get a little gnarly on the street if not geared rite. If you have 3.55 or better I'd go 750 double and single plane. If you've got decent camshaft, and good exhaust flow a 383 will take it with a grin! They love lots ove carb!
 
Rick Carson said:
not knowing what gear you are running makes a hard call...if you are running a hiway gear you may want dual plane intake and a 750cfm vacuum secondary carb. Double pumpers get a little gnarly on the street if not geared rite. If you have 3.55 or better I'd go 750 double and single plane. If you've got decent camshaft, and good exhaust flow a 383 will take it with a grin! They love lots ove carb!
Click to expand...

Right now it's a 3.23 but I'll be putting a 3.91 in it shortly
 
i have a like New used for about 4 months Mopar Performance manifold ill sell if interested
 
moparcrazy said:
i have a like New used for about 4 months Mopar Performance manifold ill sell if interested
Click to expand...

About the edelbrock, Just a personal preference. Never liked the brand. I'll think about the setup and get back to you about that intake.
 
I have an 750 edelbrock on my 383 and it works awesome
 
Well, I will speak from personal experience. Bigger is not always better. I ran a '67 383 4-spd with just a 500cfm competition series Carter carb & it had great throttle response & ran great. I think it was a little bit on the small side. With a 440 4spd. in the same car I ran a 650 dbl. pumper, 750 vac. secondary & six pack setup. If you drive on the street....forget about the double pumper carburetors. They will cut your gas mileage IN HALF & the car won't be any faster. If you've got the money, six packs are great, but sticking with a 4 bbl. (even on a 4spd car) you shouldn't run a double-pumper & you want to be around 600-650cfm. With Carter carbs off the table (now Edelbrock), I'd suggest a 600cfm vacuum secondary Holley since it's about the cheapest aftermarket carb you can buy & is perfect for your application. If you ever put in a HUGE cam or stroke the engine, then go up to a 750 vac. secondary & only use double pumpers for track cars in my opinion.
 
Last edited:
PurpleBeeper said:
Well, I will speak from personal experience. Bigger is not always better. I ran a '67 383 4-spd with just a 500cfm competition series Carter carb & it had great throttle response & ran great. I think it was a little bit on the small side. With a 440 4spd. in the same car I ran a 650 dbl. pumper, 750 vac. secondary & six pack setup. If you drive on the street....forget about the double pumper carburetors. They will cut your gas mileage IN HALF & the car won't be any faster. If you've got the money, six packs are great, but sticking with a 4 bbl. (even on a 4spd car) you shouldn't run a double-pumper & you want to be around 600-650cfm. With Carter carbs off the table (now Edelbrock), I'd suggest a 600cfm vacuum secondary Holley since it's about the cheapest aftermarket carb you can buy & is perfect for your application. If you ever put in a HUGE cam or stroke the engine, then go up to a 750 vac. secondary & only use double pumpers for track cars in my opinion.
Click to expand...

that's good to know, i always thought the double pumper would add more power but if not I'll stay away from that type. I really like Holley and will most likely go with them for the carb. I love the 6 pack because my old man had one on his 340 and I loved it but the price is just too much for me. The intake choices are driving me crazy as there are so many options many of which don't perform as they say they should from my research on the forums.
 
Banzaiii67 said:
If your seriously considering a vacuum secondary carb, I really like my QuickFuel 680.
Click to expand...

I didnt know about this brand so Ill have to look into it. My number one choice was Holley but Ill check out their website. damn it now purplebeeper has me thinking about six packs!
 
I like the wieand maniflod.
Here are my thoughts on the edelbrock 600 vs 750 on an RB. With an automatic my 600 seemed like when I wanted to roll into the throttle a Highway speed the tranny would downshift before I could get the carb to the desired opening. The 750 solved this problem and didn't have any negative effects. If you don't like the Eddy's try a Street Demon.
 
I have the Performer on my 400 topped with a Holley 750 vacuum secondaries, supporting what Rick and purplebeeper said above. I originally had the Performer RPM on there with E-street heads and 600 Edelbrock carb, and was not happy at all. It had low vacuum and terrible performance both from a stop and when accelerating hard (not WOT), such as passing a car. Edelbrock tech said RPM range for manifold and heads were mismatched so they suggested putting on the Performer, which did help some. Like 727 above, I thought the big issue was not enough fuel, even though Edelbrock said the 600 CFM as big enough. Tuning it pig rich still was not good enough. Not a particular Holley or Edelbrock fan, but I had the 750 Holley in the garage and that made a big difference.

One other thing I had issues with was the height of the carb. The previous owner had a 3/4" spacer under the Edelbrock 600 with the Performer RPM and 1002 air cleaner on there. It was hitting the hood. The RPM was about 1 1/2" higher then the Performer if I recall.

I forgot to mention that I know the RPM generates more power, particularly in the upper RPM range. My driving is usually done at 3500 RPM or less so I don't care about top end. Personal preference and driving style, I know.
 
Lazerwolf said:
I have the Performer on my 400 topped with a Holley 750 vacuum secondaries, supporting what Rick and purplebeeper said above. I originally had the Performer RPM on there with E-street heads and 600 Edelbrock carb, and was not happy at all. It had low vacuum and terrible performance both from a stop and when accelerating hard (not WOT), such as passing a car. Edelbrock tech said RPM range for manifold and heads were mismatched so they suggested putting on the Performer, which did help some. Like 727 above, I thought the big issue was not enough fuel, even though Edelbrock said the 600 CFM as big enough. Tuning it pig rich still was not good enough. Not a particular Holley or Edelbrock fan, but I had the 750 Holley in the garage and that made a big difference.

One other thing I had issues with was the height of the carb. The previous owner had a 3/4" spacer under the Edelbrock 600 with the Performer RPM and 1002 air cleaner on there. It was hitting the hood. The RPM was about 1 1/2" higher then the Performer if I recall.

I forgot to mention that I know the RPM generates more power, particularly in the upper RPM range. My driving is usually done at 3500 RPM or less so I don't care about top end. Personal preference and driving style, I know.
Click to expand...

This is interesting because the people at Holley recommended a 750 with mechanical secondaries as well but others were saying a 650 would be more than enough and to use vacuum secondaries. do you think the 750 was needed because of your e-street heads? mine are just 906 stock heads. you mentioned not being a fan of either Holley or Edelbrock, what company do you prefer other than those?
 
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