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Foot Braking Question #676135 04/20/10 09:31 PM 04/20/10 09:31 PM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	Does anyone have some ideas on how I can increase braking power on my set up (see Signature) I need more RPMs before launch but the front brakes will not hold the truck starts to move before the rear tires will spin . I was thinking about a vacuum reservor but I'm not sure??? I only have 5-6 inches of vacuum at idle . The brakes are stock but I figured they should be enough to hold but maybe I'm wrong 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

Re: Foot Braking Question [Re: Venomvpr900] #676136 04/20/10 09:33 PM 04/20/10 09:33 PM
Joined: Jan 2003 Posts: 32,394 Q Quicktree I Win
Quicktree I Win Q Joined: Jan 2003 Posts: 32,394	yea get a better converter

Re: Foot Braking Question [Re: Quicktree] #676137 04/20/10 09:41 PM 04/20/10 09:41 PM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	I've got a Mopar Performance 2400 stall in it. I know they are not the best of quality but I would think I'd be able to at least foot brake it to 1500-1600 rpm's 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

Re: Foot Braking Question [Re: Venomvpr900] #676138 04/20/10 09:47 PM 04/20/10 09:47 PM
Joined: Jan 2003 Posts: 5,894 Florida Locomotion master
Locomotion master Joined: Jan 2003 Posts: 5,894 Florida	It's actually the rear brakes that need to hold better. If you can hold the rear, you won't have to worry so much about the fronts rolling or sliding. Brakes have to be in tip-top shape. Adjustments, seals, bled, etc. I also lightly sand the rear drums after every race or two to eliminate any glazing. That increases holding ability. I've heard that swapping the master cylinder lines may help direct more pressure to the rear, but not 100% sure on its effectiveness. As quicktree said, a looser converter will help get the rpm's higher before it overcomes the brakes.

Re: Foot Braking Question [Re: Venomvpr900] #676139 04/20/10 09:50 PM 04/20/10 09:50 PM
Joined: Mar 2009 Posts: 583 Raleigh, NC R rockerbob mopar
rockerbob mopar R Joined: Mar 2009 Posts: 583 Raleigh, NC	You can try tighting up the shoe adjustment on the drums, but not too much or it will drag & may slow your reaction time as well..... 2005 Dakota 4X4 3.7 2004 Rumble Bee 5.7 1978 Diplomat 318 1969 Satellite 318 "bracket racer" 1966 Barracuda (in progress ) 1964 Dodge 330 (future race project) 1962 Belvedere (HUM????)

Re: Foot Braking Question [Re: Venomvpr900] #676140 04/20/10 09:50 PM 04/20/10 09:50 PM
Joined: Aug 2009 Posts: 2,042 Mooresburg, Tn ' '72CudaRacer top fuel
'72CudaRacer top fuel ' Joined: Aug 2009 Posts: 2,042 Mooresburg, Tn	I believe that truck has a brake valve that reduces the brake pressure to the rear wheels proportionally (sp?) to the load on the rear (in bed). That could be reducing the amount of rear brakes to just about nothing. Brian

Re: Foot Braking Question [Re: '72CudaRacer] #676141 04/20/10 10:35 PM 04/20/10 10:35 PM
Joined: Mar 2003 Posts: 2,499 PA moparacer top fuel
moparacer top fuel Joined: Mar 2003 Posts: 2,499 PA	I think my dakota had that valve on it too when I first started racing it. I also had change the brake pedal ratio to get more pressure when staging. 67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174

383man [Re: moparacer] #676142 04/21/10 01:00 AM 04/21/10 01:00 AM
Joined: Jan 2003 Posts: 27,421 Balt. Md 3 383man Too Many Posts
383man Too Many Posts 3 Joined: Jan 2003 Posts: 27,421 Balt. Md	Definetly more converter will let it hold easier. I use the stock power drum brakes on my 63. I run the MP .557 cam so I dont have a ton of vacum but the power brakes actually work good. I have a 9.5 converter that will flash to 4200 and I foot brake it to 2500 and it holds fine. Ron

Re: 383man [Re: 383man] #676143 04/21/10 08:28 AM 04/21/10 08:28 AM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	Thanks for the advice guys I'll check the rear brake adjustment out first then go from there. thanks again 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

Re: 383man [Re: Venomvpr900] #676144 04/21/10 08:47 AM 04/21/10 08:47 AM
Joined: Feb 2005 Posts: 982 western pennsylvania b1dartsport super stock
b1dartsport super stock Joined: Feb 2005 Posts: 982 western pennsylvania	I put the Matrix pads from musclecar brakes on the rear of my Dart sport,made a big difference in staging and stopping power. http://www.muclecarbrakes.com

Re: 383man [Re: Venomvpr900] #676145 04/21/10 11:40 AM 04/21/10 11:40 AM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	Quote: Thanks for the advice guys I'll check the rear brake adjustment out first then go from there. thanks again You do have discs in the ft right? If so I can`t imagine why the "whole"system can`t keep your car stable/locked on the starting line till you leave. I agree about the vert also.......a looser vert will help in ALL areas as long s it`s a good one and to say a vert has a "2400" stall is a missconception as it`s more related to YOUR power not a GENERAL power. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: 383man [Re: Thumperdart] #676146 04/21/10 11:58 AM 04/21/10 11:58 AM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	Quote: Quote: Thanks for the advice guys I'll check the rear brake adjustment out first then go from there. thanks again You do have discs in the ft right? If so I can`t imagine why the "whole"system can`t keep your car stable/locked on the starting line till you leave. I agree about the vert also.......a looser vert will help in ALL areas as long s it`s a good one and to say a vert has a "2400" stall is a missconception as it`s more related to YOUR power not a GENERAL power. Correct it does have disc brakes in the front, Can you go in to some more detail on the whole converter stall/power or point me in the right direction 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

Re: 383man [Re: Venomvpr900] #676147 04/21/10 12:03 PM 04/21/10 12:03 PM
Joined: Jul 2004 Posts: 19,317 State of confusion T Thumperdart I Live Here
Thumperdart I Live Here T Joined: Jul 2004 Posts: 19,317 State of confusion	What I mean is that a "general" stall rating doesn`t apply as we make more power. A 2400 stall may stall that behind a stock 383 but when you put it behind a 500" bad dog the stall goes up due to the increased torque. I would call a vert company and give them your power, weight, gears etc. and have one built for your needs.....you will NOT be dissapointed. 72 Dart 470 n/a BB stroker street car `THUMPER`...Check me out on FB Dominic Thumper for videos and lots of carb pics......760-900-3895.....

Re: Foot Braking Question [Re: Venomvpr900] #676148 04/21/10 12:14 PM 04/21/10 12:14 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	it's an art isn't it? Have you tried to come off at idle and waffle it? Sometimes converts like to flash instead of loading them up. My next question is why is your vacuum so low? Can you adjust on the carb to get more? I guess you could get a adjustable P-Valve and crank up the pressure? I used a Mopar 175k behind a mild 440. It worked best when I held it at 1200 and stomped it on the last yellow, it would flash to around 2800 and take off. 1.68 60 foot. [IMG]http://i66.tinypic.com/pui5j.jpg[/IMG] Coming soon!!!!

Re: Foot Braking Question [Re: Mr.Yuck] #676149 04/21/10 12:41 PM 04/21/10 12:41 PM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	Quote: it's an art isn't it? Yes it sure is Quote: Have you tried to come off at idle and waffle it? Not off idle but just off idle raise the r's just high enough to get the lope out and then hammer it Quote: My next question is why is your vacuum so low? lopey cam � Hydraulic Roller Camshaft � 288�/292� Advertised Duration (230�/234� Duration @ .050") 0.501"/0.513" Lift Quote: Can you adjust on the carb to get more? i've tried with no luck I'm using the 166k MP converter. Just going to have to keep playing with it till I find the sweet spot.......or .. and get the check book out 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

Re: Foot Braking Question [Re: Venomvpr900] #676150 04/21/10 12:57 PM 04/21/10 12:57 PM
Joined: Jan 2003 Posts: 24,562 Brookeville, Md Mr.Yuck Not enough dumb comments...yet
Mr.Yuck Not enough dumb comments...yet Joined: Jan 2003 Posts: 24,562 Brookeville, Md	"i've tried with no luck I'm using the 166k MP converter. Just going to have to keep playing with it till I find the sweet spot.......or .. and get the check book out " you could always put a set of pedals in it....

Re: Foot Braking Question [Re: Mr.Yuck] #676151 04/21/10 01:51 PM 04/21/10 01:51 PM
Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi rowin4 master
rowin4 master Joined: Jun 2005 Posts: 6,257 gulfport, ms, west mi	I think if you have some one stand and watch your truck , you'll find the front brakes are holding and the tires are sliding through the light. Either hold your rpm's below that or get a higher stall converter. it's ok to butt heads, just don't do it with a butthead

Re: Foot Braking Question [Re: Mr.Yuck] #676152 04/22/10 11:08 AM 04/22/10 11:08 AM
Joined: Sep 2009 Posts: 186 Kansas, USA V Venomvpr900 OP member
Venomvpr900 OP member V Joined: Sep 2009 Posts: 186 Kansas, USA	Quote: you could always put a set of pedals in it.... I could... that would take even more and more of the green stuff. I really need to water that money tree in the back yard 1987 D-100 SWB, 390hp/360ci Mopar Performance Crate, Built 998 trans, 9.25 axle with sure-grip and 3.92's - 3960#'s with driver 13.83 @ 96.36 1.98 60 ft 2003 Dodge Ram 2500 HD 5.7ltr HEMI!!!

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