which carb? Ok new question Diff. between 750 perf. or 800 thunder?

[sparkybr74mr]

I recently bought a 70 charger 4 spd, She has a recently rebuilt 440 magnum to spec's. I am requesting recommendations for a replacement carb. She currently has a carter carb that has been giving me some trouble. I have been told to get a street demon, holley, edlebrock, and even came across a six pack set up. I am looking for one with a really good throttle response and low maintainance. Any advise would be appreciated. Thanks, Steve   

What is the diff. in a 750 performer and 800 thunder series. What would be the better carb for my car?  And would I need the single or dual plane carb. for my car. Running a stock manifold  Thanks again Steven

[Rolling_Thunder]

F**K DEMON CARBS


Ease of maintinance and what not?  I'd say an Edelbrock 750 cfm Carb with Electric choke if that's your thing. 

[sparkybr74mr]

Just got done looking at one, 259 and some change. Leaning towards that one. Havn't heard anything bad about edlebrocks

[sparkybr74mr]

Ok, next question performer series 750, or thunder series 800? any recomendations.

[Ghoste]

Thunder series, it's like an AVS so there is a little more and easier tunability to the secondaries with it plus the 440 will like the 50 more cfm on the top end.

[62 Max]

I recently bought a 70 charger 4 spd, She has a recently rebuilt 440 magnum to spec's. I am requesting recommendations for a replacement carb. She currently has a carter carb that has been giving me some trouble. I have been told to get a street demon, holley, edlebrock, and even came across a six pack set up. I am looking for one with a really good throttle response and low maintainance. Any advise would be appreciated. Thanks, Steve

Out of curiosity,what is the carb number on your car? If it is the original 4737 that came on it when new,wrap it up,put it in a box,hide it where only you will know where it is.It's worth about $800 bucks.

[tan top]

put a 800 thunder AVS on mine  ,  manual choke     no problems  out of the box , just fine tune  idle mixture & idle speed 

[sparkybr74mr]

I recently bought a 70 charger 4 spd, She has a recently rebuilt 440 magnum to spec's. I am requesting recommendations for a replacement carb. She currently has a carter carb that has been giving me some trouble. I have been told to get a street demon, holley, edlebrock, and even came across a six pack set up. I am looking for one with a really good throttle response and low maintainance. Any advise would be appreciated. Thanks, Steve

Out of curiosity,what is the carb number on your car? If it is the original 4737 that came on it when new,wrap it up,put it in a box,hide it where only you will know where it is.It's worth about $800 bucks.

He replaced it witha carb from the wrecking yard, hence the problems, I will post the numbers later when I have a chance to look at them

[426HemiCharger]

OE Carter AVS or Edelbrock Thunder series AVS

[Purple440]

I'm running an 800cfm Thunder Series AVS on my 440 and it's working just fine.  Adjusting the secondary opening is simple...no springs to mess with.  I'm sure I could get more power out of a Holley, so I'm told.

[Ghoste]

It's all the fine tuning you can do to a Holley that allows it to make a little more power.  They allow you to change more things on the carb and the things the Carter style does allow you to change don't allow the range of changes that the Holley does. But for plug and play in a street car I still like the Carter style carbs.

[sparkybr74mr]

What would be the better carb for my car a 750 performer or 800 thunder series. I am running a stock manifold. I also see the term single plane or dual plane on certain model carbs. What would be the best application. Thanks again for all the help. Steven

[Ghoste]

The Performer is like an AFB and the Thunder is like an AVS.  In your case I'd go with the Thunder for the reasons already mentioned.  If you have the stock intake it's a dual plane which is plenty fine for the street.

[oldschool]

It's all the fine tuning you can do to a Holley that allows it to make a little more power.  They allow you to change more things on the carb and the things the Carter style does allow you to change don't allow the range of changes that the Holley does.

  holleys are without a doubt the easiest to tune,to get parts for,and ease of use . its what i have on all my cars. would not run anything else...

[tan top]

hey sparky i sent you a PM 

[YGBSM]

What would be the better carb for my car a 750 performer or 800 thunder series. I am running a stock manifold. I also see the term single plane or dual plane on certain model carbs. What would be the best application. Thanks again for all the help. Steven

Edelbrock Performer Series= continuations of Carter AFB (Aluminum Four Barrel).
Edelbrock Thunder Series- continuations of Carter AVS (Air Valve Secondary)

Just so you know, some people think the 750 performer is poorly designed, with off idle stumble problems.  The 750 is calibrated from the factory for economy.  I have not heard any criticisms of the 800 performer.  Edelbrock redesigned the 800 with performance in mind.

The 800 thunder is a good carb, but more expensive. 

A 800 (Performer or Thunder) may be a bit big for a completely stock 440 Mag.  I have run a 625 AFB Competition Series on a completely stock 440 Mag with excellent throttle response and reliability. 

Whatever you get, I definitely recommend getting an electric choke version for convenience. 

[Purple440]

The AVS does offer more tunability without taking the carb off, but yeah it is big at 800cfm.  My 440 has stock heads (with bigger valves) so we've tightened down the secondaries to make it act like a smaller carb and the throttle response is excellent.  I've loosened it a bit since as I've installed an Eddy RPM intake, and my cam has more duration (230@.050) than stock.  My point is, you can get the AVS 800cfm and tune it down to give you the throttle response you're engine likes.

And yes the electronic choke works great, unlike my Demon carb.  Hit the peddle and hold for a few seconds and you're set.  Turn the key and the choke takes care of the rest. 



- Doug