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Re: Slicks
[Re: Kudakidd]
#834445
10/20/10 03:13 PM
10/20/10 03:13 PM
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Joined: Aug 2003
Posts: 11,179
Atco NJ
DJVCuda
I Live Here
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I Live Here
Joined: Aug 2003
Posts: 11,179
Atco NJ
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I'd say timing ( a lower initial helps sometimes) next carb - accel pump shot and jet extensions my dad had 3.23's in his car - we had a 750 holley dialed in for the track - larger acc pump shot and backed the timing down initial and it ran great off the line - 10 BTDC IIRC with a MP dizzy so it was not at 38 total. we swapped carbs for a more street friendly ( 670 cfm holley and there is a huge bog off the line now - back to square one! VIDEO HERE keep in mind its leaving under 3 grand and 3.23's
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Re: Slicks Bite, Car Bogs - What to do?
[Re: ProStDodge]
#834446
10/20/10 03:21 PM
10/20/10 03:21 PM
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Joined: Nov 2003
Posts: 672
Roanoke Va
gearjammerdart
mopar
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mopar
Joined: Nov 2003
Posts: 672
Roanoke Va
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Quote:
install an automatic - the car will be faster, break fewer parts, and suddenly get more consistent.
Been there - done that - went faster
Then you could eat a hot dog and drink a coke as you let your air/electric stifter shift for you.   You might as well stay home and play a play station IMO.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Kudakidd]
#834447
10/20/10 03:26 PM
10/20/10 03:26 PM
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Joined: Nov 2009
Posts: 2,275
Desert Tracker
HYPER8oSoNic
top fuel
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top fuel
Joined: Nov 2009
Posts: 2,275
Desert Tracker
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440 in a A-body? Need a bit more gear, 4.10's should work better. Any 28.5-29" tires in your possesion? Are you running a Holley or Carter and what cfm? On either type, check your pump shot settings, and linkage travel. How is your total vs. initial ignition timing? Food for  
"Stupidity is Ignorance on Steroids"
"Yeah, it's hopped to over 160" (quote by Kowalski in the movie Vanishing Point 1970 - Cupid Productions)
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Re: Slicks
[Re: Kudakidd]
#834450
10/20/10 07:58 PM
10/20/10 07:58 PM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
The carb is a 750cfm Mighty Demon, that I checked and rebuilt. 73 in the primaries/ 83 in the secondaries. #31 accelerator nozzles and a pink cam. I think I'm out of pump fuel leaving at 4k rpm. Anyone have a pump cam chart. I think I need the extra gas to come in later. I'm not going to change rear gears, although I know 3.55's aren't optimum for my combo.
I'd jump up to 76-84's and leave at 4800-5k and see what happends.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Kudakidd]
#834453
10/21/10 01:33 AM
10/21/10 01:33 AM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
440 in a Duster, and yes it's a 4 speed. Even popping the clutch at 4 grand, the car will still lay down and hesitate giving me 2.10 60 footers! I'm using M/T drag Radials set at 18psi. I tries moving the card accelerator pump cam to the #2 position and it didn't help at all. Best time on a 60 degree nite was 13.16 at 106 mph. Any help?
The way your describing it, it seems like a carb tune problem. Laying down,,, Hesitation,, etc.
But there appears to be some other issues as well. IMO. For instance if the comp is around 10.1 with that cam and tire you should have a problem with Hook, not bog!
On the carb, the pink cam may be to much, thats as big as it gets, if set in the #2 position. You may be flooding the heck out of it on launch. Try a blue cam, that works good for alot mild combos.
At 106 MPH your about a second short on ET, due to your poor launch. You have at least 12.40 ET second ride there with that MPH.
And IMO, if you have 10.+ comp, I dont see why you couldnt bump into the 11,s with a 440 in a Duster with that 509 cam.
I just think your combo needs some track test and tune time. mike 
Last edited by Sport440; 10/21/10 07:21 PM.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Kudakidd]
#834454
10/21/10 02:49 AM
10/21/10 02:49 AM
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Joined: Oct 2006
Posts: 1,265
New York, USA
Chargerfan68
pro stock
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pro stock
Joined: Oct 2006
Posts: 1,265
New York, USA
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I know with my heavy B-body, I tried all launch rpms, and my car must launch at 6000-6500 rpm. I just ran my fastest 60 ft. with a 6500 rpm launch.
You need to make sure you have super heavy duty u-joints and yokes to survive that. I broke everything in between the motor and rear. Finally upgraded to billit yokes both sides with 1350 spicer solid ujoints and no breakage now.
Good luck,
Greg.
1.50 60Ft. , 10.75@ 127MPH Hauling 3900 LBS.
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chico
[Re: Sport440]
#834456
10/21/10 11:24 AM
10/21/10 11:24 AM
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Joined: Jan 2003
Posts: 7,864
Witness Protection Program
Kudakidd
OP
master
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OP
master
Joined: Jan 2003
Posts: 7,864
Witness Protection Program
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Quote:
The way your describing it, it seems like a carb tune problem. Laying down,,, Hesitation,, etc.
But there appears to be some other issues as well. IMO. For instance if the comp is around 10.1 with that cam and tire you should have a problem with Hook, not bog!
And IMO, if you have 10.+ comp, I dont see why you couldnt bump into the 11,s with a 440 in a Duster with that 509 cam.
Maybe that's the problem, the compression ratio is only 9:1.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Big Squeeze]
#834457
10/21/10 11:24 AM
10/21/10 11:24 AM
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Joined: Jan 2003
Posts: 24,562
Brookeville, Md
Mr.Yuck
Not enough dumb comments...yet
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Not enough dumb comments...yet
Joined: Jan 2003
Posts: 24,562
Brookeville, Md
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Quote:
Quote:
At 106 MPH your about a second short on ET, due to your poor launch. You have at least 12.10 ET second ride there with that MPH.
12.10 @ 106???.......Only time that happens is if a car is running out of fuel or hitting the chip at 1,000 feet.......  
yeah my old coronet ran 12.90's at 104 w/ 1.68 60 foot times. I'd say 106 is good for 12.60-70. Your gear is killing you and will cause your clutch to hate you.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Kudakidd]
#834458
10/21/10 02:29 PM
10/21/10 02:29 PM
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Joined: Oct 2003
Posts: 4,013
South Park, Pa.
68LAR
master
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master
Joined: Oct 2003
Posts: 4,013
South Park, Pa.
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There are many things that must be considered with your combo: 1. You have a stick car. When you launch, most likely you are leaving off of the secondary, not the primary side of the carb. 2. If the car bogs, some adjustment must be made to have something slip. Something has to slip, clutch or tires, you make the choice. It has to be one of the two. With an automatic, most of the time it is the converter. But something has to slip to keep the engine rpms "UP". 3. With your combo, and not knowing what flywheel you are using, it sounds like you are out of the power band of the cam at launch. 4. Radial tires and stick cars usually don't work well together. Most stick cars will blow a radial tire off at will. Some things I'd try: 1. Make sure you have a good heavy shot from the secondary squirters. There shouldn't be any "dead spot" when the rear throttle blades are activated. 2. Leave at a higher RPM and raise your tire pressure. 3. Make sure you have your valves adjusted properly. Too much preload will allow the lifters to pump up and restrict engine rpm. 4. Distributor timing should be all out at idle or no later than 1800 rpm. 5. You might want to try a small diameter tire, just for racing. 6. A 440 in an "A" body should have no problem launching. There should be plenty or torque. I would think that your compression ratio is kind of low for that cam, but you should still be able to make it work to some extent. What is your cranking compression? You don't want to be below 165. Ideal would be in the 180 range. These are things that I've tried and learned over the years. Many of them are in use right now with my car. Good luck and have fun hitting the gears. 
4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Kudakidd]
#834459
10/21/10 04:09 PM
10/21/10 04:09 PM
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Joined: Dec 2009
Posts: 20,701
in a cattle trailer down by th...
Guitar Jones
Paddle faster! I hear banjo music!
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Paddle faster! I hear banjo music!
Joined: Dec 2009
Posts: 20,701
in a cattle trailer down by th...
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My buddy would just hammer the throttle and let valve float be the rev limiter. Lot's of fun!!
"Follow me the wise man said, but he walked behind"
'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.
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Re: Slicks Bite, Car Bogs - What to do?
[Re: Mr.Yuck]
#834460
10/21/10 07:27 PM
10/21/10 07:27 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
Quote:
Quote:
At 106 MPH your about a second short on ET, due to your poor launch. You have at least 12.10 ET second ride there with that MPH.
12.10 @ 106???.......Only time that happens is if a car is running out of fuel or hitting the chip at 1,000 feet.......
yeah my old coronet ran 12.90's at 104 w/ 1.68 60 foot times. I'd say 106 is good for 12.60-70. Your gear is killing you and will cause your clutch to hate you.
You guys are right, a 12.10 is a big stretch for a 106 mph. 12.3,s to 40,s is where it should be running, without the bog. I fixed it/edited it. mike
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Re: chico
[Re: Kudakidd]
#834462
10/21/10 08:06 PM
10/21/10 08:06 PM
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Joined: Jan 2003
Posts: 6,591
Canton, Ohio
Sport440
master
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master
Joined: Jan 2003
Posts: 6,591
Canton, Ohio
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Quote:
Quote:
The way your describing it, it seems like a carb tune problem. Laying down,,, Hesitation,, etc.
But there appears to be some other issues as well. IMO. For instance if the comp is around 10.1 with that cam and tire you should have a problem with Hook, not bog!
And IMO, if you have 10.+ comp, I dont see why you couldnt bump into the 11,s with a 440 in a Duster with that 509 cam.
Maybe that's the problem, the compression ratio is only 9:1.
Your compression isnt the best , but I dont think its the problem.
Theres something wrong with the engine tune, IMO.
Even with your 3.55 gear that engine should be capable of easy 12.40,s Sub 12,s with hook and a great tune in that A body car.
My A body 440 Sport started out with 9.5 comp. and a mp 484 cam. With 3.91 gears and a Stock vert, with tall tire I ran a 12.47 @ 113 MPH.
With a set of slicks, 11.75 @ 113 mph stock vert. all @ 3350#
Ive seen where bone stock 440,s in Abodys will run 12.40,s.
So Im convident without a doubt, that once you find the tune problem. Your MPH and ET will come around.
You should be able to Blow those tires away at will. There should be No dead spot or hesitation in the tune.
You need to verify that your timing is around 35* at RPM
Check your plugs for richness or misfire.
Dont laugh  , Ive had #7 cylinder drop out because of a misfire, caused by a burnt spark plug wire at the header. And I couldnt tell it by sound.
As I stated earlier, the pink cam is one of the biggest pump cams. Suppose its running rich  The Pink cam is only going to enrichen it. Bogs are not Only a lean condition.
See what the plugs going to tell you, or abuddy behind the car.
On your MPH, what fuel pump do you have? If its bone stock, it may be starving you at the top and you may not even feel it.
Just a few things that I would check if it were my car. One more, Id do a compression check too. mike
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If it hooks at 4k and you have 3.55's it will want to pull the rpm's down to match the to slow tire/drivetrain speed. With more gear it will let the rpm's stay up higher and not pull it down as much when it dead hooks. If you launch at a high rpm it might haze the tires as it launch with 3.55's or in other words spin a little which is better then bogging it way down. Ron
