How do yall figure out what size carb is best for your car?

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Posted by BILLY WALTON from GEORGIA
9/12/2024 4:10 PM 		#1

A friend sent me this but I got lost on some of the blanks.


http://www.wallaceracing.com/Calculators.htm

 

Its really me....I fixed my caps lock .
 
Posted by rpm
9/12/2024 8:58 PM 		#2

You can't swing a cat and not hit an online carburator size calculator online.

Bob. 69 Mach 1, 393W, SMOD Toploader, Armstrong  steering, factory AC.
 
Posted by BILLY WALTON from GEORGIA
9/12/2024 9:25 PM 		#3

I dont have a cat

Its really me....I fixed my caps lock .
 
Posted by Rudi
9/13/2024 8:57 AM 		#4

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Did a Haitian eat it🤪

Good work ain't cheap, Cheap work ain't good!   Simple Man
 
Posted by TKOPerformance
9/13/2024 9:00 AM 		#5

Rudi wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Did a Haitian eat it🤪

HAHAHAHAHAHA!!!!!!!

 
Posted by BILLY WALTON from GEORGIA
9/13/2024 1:53 PM 		#6

Rudi wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Did a Haitian eat it🤪

I believe so

Its really me....I fixed my caps lock .
 
Posted by KeithP
9/13/2024 2:49 PM 		#7

Rudi wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Did a Haitian eat it🤪

Somebody I worked with 25 years ago knew someone from Haiti. I'm offended by that comment. lol
 

1966, vert, 347 stroker, T5z, 4 wheel disc, pb, 3.70 LS 9", EPAS
 
Posted by lowercasesteve
9/13/2024 3:58 PM 		#8

KeithP wrote:

Rudi wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Did a Haitian eat it🤪

Somebody I worked with 25 years ago knew someone from Haiti. I'm offended by that comment. lol
 

I hope this thread was tounge-in-cheek.

Original owner - 351w,T-5, 4whl disks, power R&P
 
Posted by 6sally6
9/13/2024 5:33 PM 		#9

Tounge ??! (Welcome to the 6Sally6 speak club)


6s6
BILLY............get a 600 CFM  carb and be happy......if you gotta 289...302...5.0...331...347...
it'll work good on all of them (specially if you street drive it...vacuum secondarys are very forgiving...
It sux what it needs)
6s6

Last edited by 6sally6 (9/13/2024 5:38 PM)

Get busy Liv'in or get busy Die'n....Host of the 2020 Bash at the Beach/The only Bash that got cancelled  )8
 
Posted by Bullet Bob
9/13/2024 7:12 PM 		#10

I agree with Sal, though if you have a 289/302 (5.0) I'd prolly lean toward a 500 - 550 unless you're planning to race it.  The smaller pot will give better off-idle throttle response and be easier to properly tune for the 300 C.I. engine IMO.  Seems to me that most guys tend to go too big and over-carb. 

"you get what you pay for, good work isn't cheap, and there are NO free lunches...PERIOD!"
 
Posted by BILLY WALTON from GEORGIA
9/13/2024 7:34 PM 		#11

Bullet Bob wrote:

I agree with Sal, though if you have a 289/302 (5.0) I'd prolly lean toward a 500 - 550 unless you're planning to race it.  The smaller pot will give better off-idle throttle response and be easier to properly tune for the 300 C.I. engine IMO.  Seems to me that most guys tend to go too big and over-carb. 

It has a 570 street avenger on it but we are wondering if it is working properly ....Car seems to just not have the power it should to me....the stock 289 2 bbl that I pulled out 
seemed to be just as strong

Its really me....I fixed my caps lock .
 
Posted by Rufus68
9/14/2024 5:13 AM 		#12

Do you have an AFR gauge on it?  If so, how well tuned is the current carb?  If not, you're just guessing as to what the fuel mixture is in the circuits.

1968 T-code Coupe with a 302.  Nice car, no show stopper for sure, but I like it.
 
Posted by TKOPerformance
9/14/2024 5:27 AM 		#13

Well sure, because a stock 289 non HiPo was done reving at 5,000RPM.  They were cammed to make peak power at like 4,800.  Its how they had low end torque.  The better cam trades some of that for more RPM and power potential.

Definitely check to see that the carb is doing its job, but a better question might be what trans is in it and what rear gear does it run?

Worth mentioning, but what about timing?
 

 
Posted by rpm
9/14/2024 8:06 AM 		#14

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Nobody swings their own cat. Ya gotta use a neighbor's.

Bob. 69 Mach 1, 393W, SMOD Toploader, Armstrong  steering, factory AC.
 
Posted by TKOPerformance
9/14/2024 3:51 PM 		#15

rpm wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Nobody swings their own cat. Ya gotta use a neighbor's.

I believe its supposed to be dead as well.  Put out some antifreeze. 

 
Posted by 50vert
9/14/2024 4:15 PM 		#16

rpm wrote:

BILLY WALTON from GEORGIA wrote:

I dont have a cat

 
Nobody swings their own cat. Ya gotta use a neighbor's.

My neighbor's don't have cats .... I have Doberman's.

"Those telephone poles were like a picket fence"
 
Posted by BILLY WALTON from GEORGIA
9/14/2024 9:24 PM 		#17

TKOPerformance wrote:

Well sure, because a stock 289 non HiPo was done reving at 5,000RPM.  They were cammed to make peak power at like 4,800.  Its how they had low end torque.  The better cam trades some of that for more RPM and power potential.

Definitely check to see that the carb is doing its job, but a better question might be what trans is in it and what rear gear does it run?

Worth mentioning, but what about timing?
 

has 5 speed and 3:55 gear
 

Its really me....I fixed my caps lock .
 
Posted by TKOPerformance
9/15/2024 5:46 AM 		#18

BILLY WALTON from GEORGIA wrote:

TKOPerformance wrote:

Well sure, because a stock 289 non HiPo was done reving at 5,000RPM.  They were cammed to make peak power at like 4,800.  Its how they had low end torque.  The better cam trades some of that for more RPM and power potential.

Definitely check to see that the carb is doing its job, but a better question might be what trans is in it and what rear gear does it run?

Worth mentioning, but what about timing?
 

has 5 speed and 3:55 gear
 

Which T5?  Z spec or V8 Foxbody? 
 

 
Posted by RV6
9/15/2024 12:34 PM 		#19

BILLY WALTON from GEORGIA wrote:

Bullet Bob wrote:

I agree with Sal, though if you have a 289/302 (5.0) I'd prolly lean toward a 500 - 550 unless you're planning to race it.  The smaller pot will give better off-idle throttle response and be easier to properly tune for the 300 C.I. engine IMO.  Seems to me that most guys tend to go too big and over-carb. 

It has a 570 street avenger on it but we are wondering if it is working properly ....Car seems to just not have the power it should to me....the stock 289 2 bbl that I pulled out 
seemed to be just as strong

The 570 SA should be fine. Did you just bolt it on out of the box? If so, tuning is in order.

Gary Zilik - Pine Junction, Colorado - 67 Coupe, 289-4V, T5
 
Posted by BILLY WALTON from GEORGIA
9/15/2024 12:40 PM 		#20

TKOPerformance wrote:

BILLY WALTON from GEORGIA wrote:

TKOPerformance wrote:

Well sure, because a stock 289 non HiPo was done reving at 5,000RPM.  They were cammed to make peak power at like 4,800.  Its how they had low end torque.  The better cam trades some of that for more RPM and power potential.

Definitely check to see that the carb is doing its job, but a better question might be what trans is in it and what rear gear does it run?

Worth mentioning, but what about timing?
 

has 5 speed and 3:55 gear
 

Which T5?  Z spec or V8 Foxbody? 
 

Upgraded Fox trans using the 068 cluster gear set (350-400 HP), No synchro on rev. Added cluster support plate &, billet 3-4 keys
 

Its really me....I fixed my caps lock .
 


 
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