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HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? #1288922
08/21/12 12:49 AM
08/21/12 12:49 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
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Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
...In a 3720 lb. "race weight"(with driver)GTX? The Wallace Calculator is not even close to the MP listing,in my Mopar Performance manual! ALL educated guesstimates are welcome! Fastest the car has gone is a 11.19 @ 120 mph. Thanks in advance for your info! Randy B.

Last edited by Labratt; 08/21/12 12:51 AM.
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288923
08/21/12 12:56 AM
08/21/12 12:56 AM
Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
RobX4406 Offline
I Live Here
RobX4406  Offline
I Live Here

Joined: Apr 2005
Posts: 12,271
Overpriced Housing Central
I'll guess 525rwhp.

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288924
08/21/12 01:06 AM
08/21/12 01:06 AM
Joined: Jan 2004
Posts: 3,837
Central Missouri Fort Leonard...
mopar65 Offline
master
mopar65  Offline
master

Joined: Jan 2004
Posts: 3,837
Central Missouri Fort Leonard...
Quote:

...In a 3720 lb. "race weight"(with driver)GTX? The Wallace Calculator is not even close to the MP listing,in my Mopar Performance manual! ALL educated guesstimates are welcome! Fastest the car has gone is a 11.19 @ 120 mph. Thanks in advance for your info! Randy B.




Randy here is what the moparts said my car should be making. But it says i should of ran a 10.90 in the 1/4 with (Your Rear Wheel Hp Is: 533.52) but in the cool fall air i ran a best of 10.68. So i don't know how right the program is. mopar65 :beer

Last edited by mopar65; 08/21/12 01:08 AM.

3520 pound race ready 1973 Street/Strip Dodge Dart - Stock stroke 440/727 10.49 @ 125.0 on 93 pump gas & ET Street Radials. More to come... ( SGT Miller) Proudly served 12 years in the US ARMY RESERVES support our troops
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: RobX4406] #1288925
08/21/12 01:12 AM
08/21/12 01:12 AM
Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
Twostick Offline
Still wishing...
Twostick  Offline
Still wishing...

Joined: May 2003
Posts: 6,560
Downtown Roebuck Ont
675 flywheel according to my calc will get you 10.81 @ 124.5 at 3720 lbs.

Kevin

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: mopar65] #1288926
08/21/12 01:14 AM
08/21/12 01:14 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
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Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Hi,Bobby! It says with my best of 120mph at 3720...it's making 502 at the rear wheels. Not sure what that translate to at the crank? On Gary Jacob's dyno,it made 425 at the wheels! That's a big difference!

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: mopar65] #1288927
08/21/12 01:15 AM
08/21/12 01:15 AM
Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY Offline
Master
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Joined: Jun 2003
Posts: 52,972
Romeo MI
Quote:

Quote:

...In a 3720 lb. "race weight"(with driver)GTX? The Wallace Calculator is not even close to the MP listing,in my Mopar Performance manual! ALL educated guesstimates are welcome! Fastest the car has gone is a 11.19 @ 120 mph. Thanks in advance for your info! Randy B.




Randy here is what the moparts said my car should be making. But it says i should of ran a 10.90 in the 1/4 with (Your Rear Wheel Hp Is: 533.52) but in the cool fall air i ran a best of 10.68. So i don't know how right the program is. mopar65 :beer




That thing is way off... the numbers it says for
RWHP is close to flywheel but then its still off

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288928
08/21/12 01:23 AM
08/21/12 01:23 AM
Joined: Aug 2003
Posts: 43,099
Bend,OR USA
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Cab_Burge Offline
I Win
Cab_Burge  Offline
I Win
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Joined: Aug 2003
Posts: 43,099
Bend,OR USA
My original 512 C.I. pump gas low deck made 612 HP at 5600 RPM and 644 Ft lbs at 4500 RPM. It ran 10.69 ET at 124.6 MPH at Woodburn corked up with the air cleaner on the six pak. That was with me in it weighing close to 3400 Lbs. wet, corked up with the air cleaner on, 4.10 gears with 30 inch tall tires The torque converter can and does makes a huge difference on our cars I ran the car at Woodburn several times this summer, it ran 9.96 at 134 MPH corked up on pump gas. This motor made 727 HP the last time it was on a DTS engine dyno at 4300 Ft elevation in Klamath Falls, OR I broke my ten inch custom built converter two years ago, I put in a new T/A 8 inch race Hemi converter with no other changes, it made the car way easier to drive and race and pick my car up .2 ET and 2 MPH in the 1/8 mile


Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Cab_Burge] #1288929
08/21/12 01:31 AM
08/21/12 01:31 AM
Joined: Jan 2003
Posts: 27,421
Balt. Md
3
383man Offline
Too Many Posts
383man  Offline
Too Many Posts
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Joined: Jan 2003
Posts: 27,421
Balt. Md
The few times I have run my #'s on a program they all seem to be close as it says I make about 600 to 625 at the flywheel to run 10.70's at just over 3700 lbs. Ron

Last edited by 383man; 08/21/12 01:32 AM.
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288930
08/21/12 01:53 AM
08/21/12 01:53 AM
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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goldmember Offline
master
goldmember  Offline
master
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
570fwhp.

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: goldmember] #1288931
08/21/12 02:00 AM
08/21/12 02:00 AM
Joined: Jan 2003
Posts: 5,484
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

Joined: Jan 2003
Posts: 5,484
SoCal
Quote:

570fwhp.




Bingo! My duster with a 560HP 360 went 10.50's-10.60's at 127mph at 3360lbs. with me in it.
Just remember, engine acceleration is just as important as the HP and TQ the engine produces!!
Brian


Brian Hafliger
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: 383man] #1288932
08/21/12 02:00 AM
08/21/12 02:00 AM
Joined: May 2003
Posts: 2,117
Cleveland Ohio
10secGTX Offline
top fuel
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Posts: 2,117
Cleveland Ohio
I have made 468 - 500 at the rear wheels on different dynos ..but I have gone 10.67 at 125 with a racing exhaust and 4.10 gears.. to slow the car down I put 3.73's in and my full exhaust and MT drag radials and the car went ....10.67 at 122 lol at 3750 with me ....you should see your first 10 !!!! at Norwalk and then some

7344038-11-167.JPG (117 downloads)
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: RobX4406] #1288933
08/21/12 02:00 AM
08/21/12 02:00 AM
Joined: Jan 2003
Posts: 5,484
SoCal
Brian Hafliger Offline
master
Brian Hafliger  Offline
master

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Posts: 5,484
SoCal
Quote:

I'll guess 525rwhp.



Yep, this too!


Brian Hafliger
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: 10secGTX] #1288934
08/21/12 02:08 AM
08/21/12 02:08 AM
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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goldmember Offline
master
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Joined: Feb 2004
Posts: 4,501
Gainesville,FL
Quote:

I have made 468 - 500 at the rear wheels on different dynos ..but I have gone 10.67 at 125 with a racing exhaust and 4.10 gears.. to slow the car down I put 3.73's in and my full exhaust and MT drag radials and the car went ....10.67 at 122 lol at 3750 with me ....you should see your first 10 !!!! at Norwalk and then some


Yep about 470 rwhp(570fwhp-18%=470ish) would do it!Its simple math,not rocket science.

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: RobX4406] #1288935
08/21/12 02:11 AM
08/21/12 02:11 AM
Joined: Feb 2004
Posts: 4,501
Gainesville,FL
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goldmember Offline
master
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Gainesville,FL
Quote:

I'll guess 525rwhp.


I'd say 10.50's with that number.

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: goldmember] #1288936
08/21/12 02:45 AM
08/21/12 02:45 AM
Joined: Mar 2009
Posts: 2,457
Sydney,Australia
tex013 Offline
top fuel
tex013  Offline
top fuel

Joined: Mar 2009
Posts: 2,457
Sydney,Australia
Randy,
my Satellite on the dyno normally shows 405-410RWHP.
Best et is 11.09 normally runs .12-16 MPH is around 118.9-119.75
car weight last time weighed is around 3775lbs
i have a 5200 stall and with any stall you won't see a true hp.i will normally look at adding 15% puts it in the real ballpark.Means about 525-535FWHP
around 20-25HP should give you a tenth.If you get around 100FWHP over me you may exceed your hopes
good luck

Tex

Last edited by Tex013; 08/21/12 02:48 AM.

New best ET 10.259@129.65 .
New best MPH 130.32
Finally fitted a solid cam,
stepped it up a bit more
3690lbs through the mufflers
New World block 3780lbs 10.278@130.80 . Wowser 10.253@130.24 footbraking from 1500rpm
Power by Tex's Automotive
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: tex013] #1288937
08/21/12 04:43 AM
08/21/12 04:43 AM
Joined: Jul 2005
Posts: 1,559
Oh
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His and Her 69's Offline
pro stock
His and Her 69's  Offline
pro stock
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Joined: Jul 2005
Posts: 1,559
Oh
Randy our RR weighs 3700 with driver and with 615 hp on the dyno it ran 10.80's with street tires and exhaust to the rearend. It was no way all scienced out so I am sure it could have gone faster. It has a J conv, a 4.10 sure grip dana 60, full interior, etc.
The car usually ran 11.0's to 10.90's in normal air and cooler air it was faster. The 60' times were slow at 1.58 best but normal was 1.64's most of the time.
David

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: His and Her 69's] #1288938
08/21/12 09:25 AM
08/21/12 09:25 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
L

Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Thanks everyone! Fran..you will see me at Norwalk..but not the GTX! I still have a ways to go until it's completely re-assembled. Motor should be ready for the Stuska engine dyno shortly. I'm hoping for a "nice" little horsepower increase from Jeff's cnc-porting..and milling the Eddy's for a bump in compression..from 10:1 to 11:1. The heads were box-stock,port and combustion chamber-wise,with Isky 8005 springs,and Comp retainers. I'm guessing the heads flowed 275-280cfm,at best. They now flow 322 on the intake..and 223 on the exhaust,at .650 lift. My Comp solid flat tappet has .614/.620 net lift. So I'll probably see closer to 318/222. I've been told I SHOULD see an increase of approx. 80-100hp. If that's the case I SHOULD(BIG 6 LETTER WORD!)see 525rwhp..or close to it! I'll soon find out! Thanks again,EVERYONE! Randy

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288939
08/21/12 09:42 AM
08/21/12 09:42 AM
Joined: Mar 2009
Posts: 1,058
bigfork mn
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dragram440 Offline
super stock
dragram440  Offline
super stock
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Joined: Mar 2009
Posts: 1,058
bigfork mn
It will be interesting to see what it makes for power and what it runs. Mine is very similar at 3750 lbs. with me in it and runs a best of 10.63 @ 126 and normally runs 10.69 to 10.73. I have never had it on a dyno.


67' charger 499 RB 10.57 at 127
Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: dragram440] #1288940
08/21/12 09:49 AM
08/21/12 09:49 AM
Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
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Labratt Offline OP
Good Ol Randy B!
Labratt  Offline OP
Good Ol Randy B!
L

Joined: Sep 2009
Posts: 2,325
Clinton Twp... north of Deetro...
Matt...GREAT running Charger! My GTX HATES Drag Radial street tires!....tried my 295/65R-15's at the track once...can't get it to hook with them! I think my best 60' was a 1.72!

Re: HORSEPOWER NEEDED TO RUN 10.8-10.9'S ??? [Re: Labratt] #1288941
08/21/12 09:59 AM
08/21/12 09:59 AM
Joined: Mar 2009
Posts: 1,058
bigfork mn
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dragram440 Offline
super stock
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super stock
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Joined: Mar 2009
Posts: 1,058
bigfork mn
I normally run 28 x 14.50 Hoosier Quick time pro's I just ran the 275 60 Drag radials for a weekend but they did work good for me. My car is basically all stock 45 year old leaf springs some inexspensive gas shocks. It has a best 60' of 1.49 which Im sure could get better with some better suspesion parts. I was guessing mine makes 650 to the flywheel but could be off.


67' charger 499 RB 10.57 at 127
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