I've read through a few posts that cover (Somewhat) what I am trying to figure out. Carb suggestion request

[Justasgood]

So I have a fresh build 1977 440 .060 over. Torker 2 intake, Stealth aluminum heads, .541 intake/.537 Exhaust roller cam, Crane roller 1.5 rocker arms ( Forged crank with 440 source Flat top pistons pushed by Manly aluminum connecting rods. PTC (Performance Torque converter built to a tight 2500-3000, 3.23 sure grip. TTI headers

I'm thinking the builder has it at around 10.1 - 10.5-1 compression.

Not dyno'd so know idea of HP expectation.

What Carb should I use to get good street response with maybe an occasional trip to the 1\4 mile track? Let me know if more info is beeded

Thanks in advance,

Kurt

 

[PurpleBeeper]

At least 750cfm and I’d say you’re in the 800-850cfm range, Holley or Edelbrock, your choice

 

[Doorkicker]

I'm with @PurpleBeeper ... 750 minimum, prefer 850. I have a not-to-dissimilar 440 in my 72 with a 750 and it's a touch too small IMHO. Just out of curiosity, what's the duration at 0.050? Sorta speaks to RPM range and airflow demand...

 

[Justasgood]

I'm with @PurpleBeeper ... 750 minimum, prefer 850. I have a not-to-dissimilar 440 in my 72 with a 750 and it's a touch too small IMHO. Just out of curiosity, what's the duration at 0.050? Sorta speaks to RPM range and airflow demand...

COMP Cams Xtreme Energy Camshafts 23-711-9​

.230 Intake/ .236 Exhaust

Lobe lift .361/.358 and 110*lobe separation. 2200-6000 RPM range.

 

[Doorkicker]

Cool - thx.
Just a gut reaction...
If you have power brakes, I would lean in the direction of 750. Good vac and you'll have good throttle response. But, you might lose a bit at the top end of the 1/4. Or, go 850 with a tiny bit less vac, which is ok with manual master, and have a little more run time, but may need bigger squirters for throttle response. Of course, there's price. Carbs are only getting more expensive. As a side note, the Sniper 1 & 2's are 800 CFM, and the first gen's are nearly the same $ as a carb - just a lot more work to put in.

 

[Justasgood]

Cool - thx.
Just a gut reaction...
If you have power brakes, I would lean in the direction of 750. Good vac and you'll have good throttle response. But, you might lose a bit at the top end of the 1/4. Or, go 850 with a tiny bit less vac, which is ok with manual master, and have a little more run time, but may need bigger squirters for throttle response. Of course, there's price. Carbs are only getting more expensive. As a side note, the Sniper 1 & 2's are 800 CFM, and the first gen's are nearly the same $ as a carb - just a lot more work to put in.

Thanks for the reply. 1973 Charger so power brakes. I am not so worried about the top end as I am looking for crisp throttle response and tuneability. Thoughts on the Edelbrock carbs? I had a carter 625 competition series carb on my 383 and it was a dream to adjust. Just thinking it is too small for this application.

 

[Darter6]

I am looking for crisp throttle response and tuneability.

This just my thought. For a street driven car with a moderate gear ratio I like a smaller CFM.
Yes you will give up top end but for drivability and that crisp stab you may want to consider.
My favorite has been the AFB/AVS of the 60's now Edelbrock. Tested many thru the years.Now this was just street use.
Ran a 451 stroker stick car with 3.73's using a 500 CFM a 750 and a 800. The car was a beast with the 500 but showed top end loss about mid way thru third.750 at the track and not much difference between it and the 800.
My 472 Hemi car that was only street driven the 800 AVS had better drivability than the 750 AFB that I was using.
Yes I had a cross ram with 2-4's but wanted to experiment with a single 4.
Again these are just my thoughts.

 

[Justasgood]

This just my thought. For a street driven car with a moderate gear ratio I like a smaller CFM.
Yes you will give up top end but for drivability and that crisp stab you may want to consider.
My favorite has been the AFB/AVS of the 60's now Edelbrock. Tested many thru the years.Now this was just street use.
Ran a 451 stroker stick car with 3.73's using a 500 CFM a 750 and a 800. The car was a beast with the 500 but showed top end loss about mid way thru third.750 at the track and not much difference between it and the 800.
My 472 Hemi car that was only street driven the 800 AVS had better drivability than the 750 AFB that I was using.
Yes I had a cross ram with 2-4's but wanted to experiment with a single 4.
Again these are just my thoughts.

So a 750-800 Edelbrock would be a good choice?

 

[Doorkicker]

If a crisp street muscle is what you're looking for... then I would avoid an 850, and 750 is starting to sound like your go to. At that point it comes down to manual or vac secondaries

I hate to say it... and I know I'm going to get flak for saying this... but I'm not a fan of eddy carbs. I will admit, once they're tuned they tend to work well for mild engines. Just my $0.02... which isn't worth that

 

[furious70]

That cam and your gears I would lean towards 800cfm AVS2

 

[Darter6]

That cam and your gears I would lean towards 800cfm AVS2

If you are buying new, I give this a

 

[lewtot184]

Think outside the box.

 

[Justasgood]

Think outside the box.

View attachment 1911477

That is sweet. My money has already been spent with the exception of the Carb, so a single 4BBL will be the next purchase.

 

[Cop car wagon]

As a starting point, Holley 3310, 750 with vacuum secondaries.
Maybe something else will make more power, but this carb will work, is easy to tune and available everywhere for a reasonable price.
Check a used carbs jetting and such against the book to make sure no one "tuned it".