Re: which is more consistent for bracket raceing
[Re: slowpoke68]
#1195329
03/11/12 11:47 PM
03/11/12 11:47 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Any engine can run consistent if its tuned right... to make a car consistent I would make it LIGHT which is easier on parts
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Re: which is more consistent for bracket raceing
[Re: tubtar]
#1195330
03/11/12 11:48 PM
03/11/12 11:48 PM
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Joined: Mar 2003
Posts: 2,485 PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,485
PA
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Either way... Make it big inch.
Small engines seem to be more susceptible to changes in the air.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: which is more consistent for bracket raceing
[Re: slowpoke68]
#1195331
03/11/12 11:48 PM
03/11/12 11:48 PM
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Joined: Feb 2011
Posts: 1,454 Glendora Ca.
Just-a-dart
pro stock
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pro stock
Joined: Feb 2011
Posts: 1,454
Glendora Ca.
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I'd build a alum. headed low deck big block like a 451. or steal all the parts you can from "whitedart" and go smallblock.
"Just a Bracket car dressed up like a streetcar"
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Re: which is more consistent for bracket raceing
[Re: HotRodDave]
#1195333
03/12/12 01:37 AM
03/12/12 01:37 AM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
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You want to run low tens? At what weight? Lets say you budget to get down to 3200 lbs. You will need 625/650 hp on the dyno to run 10.0s consistently in average midwest air. My choice would be a 512 bb based on a 400 block. A set of massaged small port heads, run E85, and a glide. A 590 or similar flat tappet cam ought to do the trick. A set of 14/32 slicks on 14 inch rims and you should be absolutely deadly once dialed in. About a 5000 converter (no less), shift at 6000 rpm and it will last a LONG time. You probably will want to run a 4.10 gear also. I had a 475 with 440-c heads, a juice cam with .540 lift and a small 750 methanol carb and went 10 teens at 3180 lbs as an example of what can be done with out breaking the bank.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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Re: which is more consistent for bracket raceing
[Re: gregsdart]
#1195334
03/12/12 03:13 AM
03/12/12 03:13 AM
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Joined: Nov 2009
Posts: 3,082 St. Paul , Mn.
tubtar
master
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master
Joined: Nov 2009
Posts: 3,082
St. Paul , Mn.
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Quote:
You want to run low tens? At what weight? Lets say you budget to get down to 3200 lbs. You will need 625/650 hp on the dyno to run 10.0s consistently in average midwest air. My choice would be a 512 bb based on a 400 block. A set of massaged small port heads, run E85, and a glide. A 590 or similar flat tappet cam ought to do the trick. A set of 14/32 slicks on 14 inch rims and you should be absolutely deadly once dialed in. About a 5000 converter (no less), shift at 6000 rpm and it will last a LONG time. You probably will want to run a 4.10 gear also. I had a 475 with 440-c heads, a juice cam with .540 lift and a small 750 methanol carb and went 10 teens at 3180 lbs as an example of what can be done with out breaking the bank.
S'what I'm talkin about. Losing weight makes a ton of sense too , but a big motor that isn't maxed out will be the most cost effective and reliable route to my way of thinking.
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Re: which is more consistent for bracket raceing
[Re: gregsdart]
#1195335
03/12/12 11:59 AM
03/12/12 11:59 AM
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Joined: Nov 2003
Posts: 3,399 Dandridge TN
Dabee
master
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master
Joined: Nov 2003
Posts: 3,399
Dandridge TN
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Quote:
You want to run low tens? At what weight? Lets say you budget to get down to 3200 lbs. You will need 625/650 hp on the dyno to run 10.0s consistently in average midwest air. My choice would be a 512 bb based on a 400 block. A set of massaged small port heads, run E85, and a glide. A 590 or similar flat tappet cam ought to do the trick. A set of 14/32 slicks on 14 inch rims and you should be absolutely deadly once dialed in. About a 5000 converter (no less), shift at 6000 rpm and it will last a LONG time. You probably will want to run a 4.10 gear also. I had a 475 with 440-c heads, a juice cam with .540 lift and a small 750 methanol carb and went 10 teens at 3180 lbs as an example of what can be done with out breaking the bank.
Hay you just described my combo with some minor differences. I have an RB block, 4.15 stroke, 496 ci, OTB Eddy heads, 5.60 lift, PG, 5400 stall converter, 4.67 gears and 14-31-15 slicks on a 12 in rim. The car weighs 2900 lbs and it is deadly consistent. It runs 6.56 1/8 mile in 2000 to 3000ft DA.
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Re: which is more consistent for bracket raceing
[Re: Dabee]
#1195336
03/12/12 12:11 PM
03/12/12 12:11 PM
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Joined: Jan 2003
Posts: 19,304 Las Vegas
Al_Alguire
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 19,304
Las Vegas
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I agree that with work any combo can be dealdy consistent. Just takes hard work and persaverance.
To the posters question in my mind a BB would be the best choice. The reason being it will be a much more mild engine build. I also think you can build a 650ish HP BB for less money than a SB of similar power levels.
But either can be made consistent. Being a consistent money winning bracket racer is about the total package not just the power plant. Every part of the car needs to be built, tweaked with an eye toward repeatability.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: which is more consistent for bracket raceing
[Re: Al_Alguire]
#1195339
03/14/12 01:52 PM
03/14/12 01:52 PM
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Joined: Oct 2007
Posts: 4,205 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,205
New York
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X2 - less violent launch due to taller 1st gear ratio, plus half as many shifts.
Boffin Emeritus
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Re: which is more consistent for bracket raceing
[Re: polyspheric]
#1195340
03/14/12 02:11 PM
03/14/12 02:11 PM
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Joined: Mar 2003
Posts: 2,485 PA
moparacer
top fuel
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top fuel
Joined: Mar 2003
Posts: 2,485
PA
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Yep if you wanna look cool and do a big wheelie put a bunch of gear in it and a 727/904.
If you want to go rounds bracket racing take some gear out, put a glide in it and run a looooose converter...
Probably 2-3 tenths slower that way but you will turn more win lights on. Especially if you are running in the 9s on questionable tracks.
67 Barracuda street/bracket car 11.27-119 68 Dart 502 BB 8.70s-152 414 cid SB Dragster 7.65-174
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Re: which is more consistent for bracket raceing
[Re: moparacer]
#1195341
03/14/12 02:48 PM
03/14/12 02:48 PM
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Joined: Sep 2005
Posts: 12,481 Chino Valley
RodStRace
I Live Here
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I Live Here
Joined: Sep 2005
Posts: 12,481
Chino Valley
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Big tires=no traction issues Solid, simple chassis=consistant hook Light weight=less strain and wear Build toward more torque, less HP=less RPM, less wear and maintainence solid, strong trans and converter=same performance Gas is cheaper, but alky is more forgiving of A/F ratios and doesn't require as big a cooling system. There are lots of 15-18 second cars that are deadly, but you say 10s. Either a BB a-body with a good chassis and suspension and a solid big inch low RPM combo 2800-3200# or a tube car with an alky small block that weighs under 2400#. I've seen SB A bodys run 10s all day long. They require more money up front and more parts/maintenance.
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Re: which is more consistent for bracket raceing
[Re: RodStRace]
#1195342
03/14/12 11:13 PM
03/14/12 11:13 PM
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Joined: Jan 2003
Posts: 9,963 Frostbitefalls MN (Rocky&Bullw...
gregsdart
master
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master
Joined: Jan 2003
Posts: 9,963
Frostbitefalls MN (Rocky&Bullw...
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I have found that the torqueflite isn't a consistency problem as long as you have good weight distribution and a proper setup, plus the recommended big tires. Rear gears should be a little on the tall side for two reasons. Cut launch torque some, and for consistency on the shifts. If I can make a three speed deadly at 8.90s, I can't see why it can't be done in the tens. The one area you might have a problem with is on a pro tree. I have a Griner brake, one of the best. I am on the bubble as far as car reaction time goes. So if you plan on 9.90 (.400 light)or quicker pro tree racing in the future then the glide will be a good choice.
8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
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