Do I have enough carb for my motor?
#905981
01/16/11 11:56 AM
01/16/11 11:56 AM
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Joined: Apr 2007
Posts: 375 NE Oklahoma
71valiant
OP
enthusiast
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OP
enthusiast
Joined: Apr 2007
Posts: 375
NE Oklahoma
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1971 Valiant Stock block 360 480/480lift292/292 duration cam headers/ edelbrock rpm airgap intake, etc
I have a 625cfm Carter AFB now. I borrowed a Holley 750 double pumper and it went from low 14's to low 13's. It pulled alot harder on the big end of the track. I was playing with the holley jets. I just wish the Carter was as easy to tune. I think the AFB should be enough carb, but the time increase says something else.
Last edited by 71valiant; 01/17/11 09:28 PM.
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Re: Do I have enough carb for my motor?
[Re: 71valiant]
#905982
01/16/11 12:09 PM
01/16/11 12:09 PM
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Joined: Jan 2003
Posts: 28,071 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,071
Irving, TX
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The AFB is a little small for that combo. However, the AFB is MUCH easier for me to tune. I can have the jests and rods swapped out in just a few minutes and never spill any fuel.
I'll take the better street manners and economy of the AFB and give up the .000000001 second at the track you get with the Holley.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Do I have enough carb for my motor?
[Re: feets]
#905983
01/16/11 12:19 PM
01/16/11 12:19 PM
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Joined: Apr 2007
Posts: 375 NE Oklahoma
71valiant
OP
enthusiast
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OP
enthusiast
Joined: Apr 2007
Posts: 375
NE Oklahoma
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Quote:
The AFB is a little small for that combo. However, the AFB is MUCH easier for me to tune. I can have the jests and rods swapped out in just a few minutes and never spill any fuel.
I'll take the better street manners and economy of the AFB and give up the .000000001 second at the track you get with the Holley.
Yeah, I hear ya. The AFB does run really well, idles great, starts easy.. I just could'nt believe the time difference. I guess I better get a metering rod and jet kit for the AFB. I have a race in a few months with a guy from work with a turbo honda at the Tulsa track. I need to get her running as well as she can!
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Re: Do I have enough carb for my motor?
[Re: 71valiant]
#905984
01/16/11 12:46 PM
01/16/11 12:46 PM
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Joined: Jan 2003
Posts: 28,071 Irving, TX
feets
Senior Management
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Senior Management
Joined: Jan 2003
Posts: 28,071
Irving, TX
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A larger AFB will make you happier on the street than a large Holley. If you're concerned about this one race, borrow the Holley again. If it's a quick turbo Honda, even the Holley won't help you. Some of those things are in the 11s.
We are brothers and sisters doing time on the planet for better or worse. I'll take the better, if you don't mind. - Stu Harmon
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Re: Do I have enough carb for my motor?
[Re: 71valiant]
#905989
01/16/11 08:37 PM
01/16/11 08:37 PM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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The 625 is on the small side, & the 750dp is too much for a mild 360, a 650dp will work a whole lot better for your set-up, i took a basic stock (high mileaged) 360 with just bolt-ons in my 71 dart to 12.5 consistantly, it was so mild it would only pull to 5100 RPMs, now this was a magnum engine, if this honda is basically stock (with a turbo) you "should" take em, i won't say much more other then be awhare of these cars, they can go in the 11s quit easy & you won't see it coming till mid track .
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Re: Do I have enough carb for my motor?
[Re: RapidRobert]
#905993
01/16/11 10:41 PM
01/16/11 10:41 PM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
Might have to hide a bottle of NOS
That was my next suggestion , never hurts.
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Re: Do I have enough carb for my motor?
[Re: 71valiant]
#905994
01/17/11 03:13 AM
01/17/11 03:13 AM
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Joined: Oct 2010
Posts: 161 Huber Heights Ohio
greenpigs
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member
Joined: Oct 2010
Posts: 161
Huber Heights Ohio
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300 HP at the wheels in a civic is going to be hard to beat if he hooks up.
One of those weigh...2500 lbs or so & figure 2700 "race" weight unless he gutted it.
So that is a LOW 12 sec ride if he has all his ducks in a row.
Last edited by greenpigs; 01/17/11 03:20 AM.
69 Charger RT
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Re: Do I have enough carb for my motor?
[Re: greenpigs]
#905995
01/17/11 12:32 PM
01/17/11 12:32 PM
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Joined: Feb 2005
Posts: 5,221 Branson, Mo.
joedust451
super gas
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super gas
Joined: Feb 2005
Posts: 5,221
Branson, Mo.
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Quote:
300 HP at the wheels in a civic is going to be hard to beat if he hooks up.
One of those weigh...2500 lbs or so & figure 2700 "race" weight unless he gutted it.
So that is a LOW 12 sec ride if he has all his ducks in a row.
Those civics are lighter then 2500 lbs. i'll garuantee you, they are light, even if its not 300 to the wheels, if its pushing 300 FWHP it'll run hard, i ran 12.5s with 280-290 RWHP at 3200 lbs., that civic is a good 800-900+ lbs. lighter then my 71 dart, so your looking at an 11 second car if he can leave good on the boost & hook up, basically a clean run.
Here at our local track there were 2 civics running 1 night, both local guys, I saw 1 run on 3 weekends, the 1 was a plain jane no thrills, his best time was 11.5 @ 117 & none were clean runs, the other was a little "monster", it was in a sence "no thrills" looking, i know the guy personally, he has a local car lot, Its a single turbo, He could never get off a clean run, he mowed down just about everything at the track 1 night LOL, car only made 10.4s best ET, but the MPH was 138-142 , this car was tagged too.
Last edited by joedust451; 01/17/11 12:33 PM.
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