How do i get my BB Dart to hook???

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Bradpunk77

Bradpunk77

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Parksville B.C.
383 (500hp) , 727 w/ 4000 stall, 9" 4.56, Leaf spring with aftermarket track bars and leaf clamps. sub frame connectors, 29.5" x 12.5"x15 M/T Slicks.
Suggestions?
 
Worn out tires? Way too much pressure in them? Really poor track conditions?

Really, with that gear, you should be in high gear near the 1/8th. Can't see 500 hp blowing off a 12.5 slick at that point, regardless of the suspension.

Are you using slapper bars?
 
No bars, I didn't build the set up,im pedaling all the way to the 8th. im thinking a four link set up should allow me to launch harder and keep it planted. and yes the track is ****. usually pretty slick.
only made a few passes and still learning the car
 
Bradpunk77, Mopars do not need traction bars. Super Stock/Hd springs and shocks, pinion snubber. A 6point roll bar will help too. A 12 point even better. Leaf springs can take you into the 9's. 500 horse should be high 10s low 11s. We are currently using 6cyl springs and shocks With a snubber set @ 1". So far: 10:97 @120.74 on 9" tires, picking the front tires up 6" for 30-35 feet. 1.44 sec @ 60 feet. Real Simple, real fast, real fun. Oh yeah, this car is 1000% street legal.
 
Adjustable pinion snubber? Must be a pretty crappy track to be spinning with slicks an 1/8th mile.:wack:
 
many mopar's on [STOCK] skinny REDLINE TIRES running high 9's and low 10's@140mph.. you have something way not right.. binding suspension...hard slicks is where i would start..
 
is the rear of the car too high up? sounds like no weight transfer + the other mentioned "gremlins"
 
I sincerely apologize for not welcoming you to FABO Brad!!! I was just so taken back by your first post, I had a hard time believing it. We are here to help you, and any other info or pics you could post will always help us to help you...

So, Welcome to FABO! :)
 
How old are the slicks?

What air pressure is in the slicks and when was the last time they were treated (sanded down)?

Sounds like they have to much air pressure
 
Since we're starting from scratch here.....Is this the first time you've driven a car with this much power? Any possibility that you are not "black tracking" but the suspension itself has issues that are making the car hard to drive? Meaning leaf spring bushings, or the front end.....alignment, ball joints, strut bushings, steering box, etc.
 
gear and tire should good and should bring you through 1/4 around 6k in high hear.
I used to run (440/auto) with a simple set-up - batt in trunk on right side, pinion snubber, front 90/10 and rear 50/50 shocks and the rear leaf spring clamps removed. The car hooked hard on nearly any surface.
 
002 and 003 SS springs clamped in the front and un clamped in the rear will get the job done. You MIGHT try a pinion snubber, but for the most part, they belong on the shelf or in the trash can. Factory Hemi cars ran 10 second ETs back in 68 with nothing more than SS springs. So, like has been said, you got something wrong somewhere.
 
RustyRatRod said:
002 and 003 SS springs clamped in the front and un clamped in the rear will get the job done. You MIGHT try a pinion snubber, but for the most part, they belong on the shelf or in the trash can. Factory Hemi cars ran 10 second ETs back in 68 with nothing more than SS springs. So, like has been said, you got something wrong somewhere.
Click to expand...
don`t care for pinion snubbers, a lot of h.p. will tear them or the floorboard up anyway. just my 2 cents---bob
 
I like the snubers. With an SS or stock setup they won't hurt you. yes they can bang the flor up a bit. You may need to reinforce it a bit. The snubber itself should never break.

The OP never mentioned shocks or T-bars. What are you running and what is the stance of the car?
 
The way the MP chassis manual reads, snubbers are for use with manual transmission cars. I had a friend years ago with a 73 Challenger. He was one of the first in this area to have a roller cam in anything. Had a 440 and 4 speed in it. He pounded a ole in the floor pan. We beat it back straight and added an angle iron cross member all the way across and immediately above the snubber. It didn't do it again. It left like a ***** in church too.
 
Looking at your avatar,, the first thing you need to do is raise the front end back up to at least level, that way, when the front end lifts,, it transfers weight to the rear wheels.. As it is,, it's like pushing a roller skate, the front end can't get up,, so front 90/10 shocks are in order,, there are some on our local Usedvictoria.com..

I like a pinion snubber, even though others feel strongly against them.. they've worked well on all the vehicles I used them on,, but the whole suspension has to work as a package,, no solitary item, by itself is going to be the cure....

Loosey goosey front end with proper shocks/torsion bars, rear springs/shocks,, cars attitude at stop,, big battery to pass side trunk... that should get you near the ballpark..

hope it helps..
 
inertia said:
Looking at your avatar,, the first thing you need to do is raise the front end back up to at least level, that way, when the front end lifts,, it transfers weight to the rear wheels.. As it is,, it's like pushing a roller skate, the front end can't get up,, so front 90/10 shocks are in order,, there are some on our local Usedvictoria.com..

I like a pinion snubber, even though others feel strongly against them.. they've worked well on all the vehicles I used them on,, but the whole suspension has to work as a package,, no solitary item, by itself is going to be the cure....

Loosey goosey front end with proper shocks/torsion bars, rear springs/shocks,, cars attitude at stop,, big battery to pass side trunk... that should get you near the ballpark..

hope it helps..
Click to expand...

Hey Grant I was hoping you would see this , If he is running at Western he should really book some time to come see you , I will be calling soon to do the same , I swapped my spring bushings , theres a pair of Mopar Drag shocks coming in the next couple of days and I picked up an adjustable snubber from DusteGlen so I will be needing some of your time to the setup and maybe play with that carb as well . To the OP Inertia is one of the Islands Old Boy Wise Men and will get you sorted out right , well worth making time for if your coming down to Western .
 
Instead of telling you what is wrong with your car,I'll share with you what worked for me and maybe you can in-corperate some into your car.

This is the trainer car.
74 Duster
7 point cage
frames tied
8 1/4 rear end 3.91 gears with sure grip
12.5 Houiser QT pro's
727 trans
2500 rpm stall converter
440 engine 330 hp at rear
/6 bars
worn out front shocks
stock rear shocks
340 rear springs
Adjustable pinion snubber set right on the floor boards with the car level
Car ran 12.21 et
With 150hp nos the car ran 11.59
So with the nos the car is around 500 hp at the back wheels.

Tire pressure is set between 12.5 to 14 lbs depending on the track.
 
cannucky said:
Hey Grant I was hoping you would see this , If he is running at Western he should really book some time to come see you , I will be calling soon to do the same , I swapped my spring bushings , theres a pair of Mopar Drag shocks coming in the next couple of days and I picked up an adjustable snubber from DusteGlen so I will be needing some of your time to the setup and maybe play with that carb as well . To the OP Inertia is one of the Islands Old Boy Wise Men and will get you sorted out right , well worth making time for if your coming down to Western .
Click to expand...

Hey Chris, always a pleasure to work on that beauty of yours, looking forward to it.

Been meaning to drop by and meet DusterGlen..

RustyRatRod said:
The way the MP chassis manual reads, snubbers are for use with manual transmission cars.
Click to expand...

Rob,, for your consideration::..

Wouldn't you agree that with the advent of the hi-stall, and trans brake,, that auto cars now launch more similarly to a manual trans,, than the automatics that Chassis Manual refers too..???
 
RustyRatRod said:
The way the MP chassis manual reads, snubbers are for use with manual transmission cars. I had a friend years ago with a 73 Challenger. He was one of the first in this area to have a roller cam in anything. Had a 440 and 4 speed in it. He pounded a ole in the floor pan. We beat it back straight and added an angle iron cross member all the way across and immediately above the snubber. It didn't do it again. It left like a ***** in church too.
Click to expand...

YOu have to think though a 4,000 stal on a brake is approaching a 4 speed launch. It certainly shouldn't so any harm.
 
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