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Re: A-833 4 speed racers...Setup? [Re: 68LAR] #1113648 11/19/11 11:58 AM 11/19/11 11:58 AM
Joined: Aug 2004 Posts: 2,128 sweden S sshemi top fuel
sshemi top fuel S Joined: Aug 2004 Posts: 2,128 sweden	Quote: Seeing as how my son started this post I'll drop my combo for all to scrutinize. engine 446 ci big block car 68 Roadrunner weight 3926 with me in the seat Trans is stock 23 spline A833 no mods. trans fluid ATF dextron Launch rpm 49-5600 rpm depending on track conditions. shift 6400 rpm trap rpm 6300 slick pressure anywhere from 15 - 19 psi rear gear 4.56 Dana Clutch is Center Force Dual Friction 11" with aluminum flywheel (13 pounds) best et and mph is signature Is it your clutch or tires that slip?

Re: A-833 4 speed racers...Setup? [Re: sshemi] #1113649 11/19/11 12:03 PM 11/19/11 12:03 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	6,000 rpm launches, are you guys racing or having a burn out contest down the quarter mile track? it's ok to butt heads, just don't do it with a butthead

Re: A-833 4 speed racers...Setup? [Re: sshemi] #1113650 11/19/11 12:13 PM 11/19/11 12:13 PM
Joined: Oct 2003 Posts: 4,013 South Park, Pa. 68LAR master
68LAR master Joined: Oct 2003 Posts: 4,013 South Park, Pa.	Quote: Is it your clutch or tires that slip? Tires. My 60's suffer a little, but I don't have to change a clutch system every year. It's my choice. Something has to slip, I choose tires. My 60's are around 1.60. 4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight

Re: A-833 4 speed racers...Setup? [Re: 68LAR] #1113651 11/21/11 10:14 AM 11/21/11 10:14 AM
Joined: Jan 2003 Posts: 4,573 ...gently down the stream LAR_414 OP master
LAR_414 OP master Joined: Jan 2003 Posts: 4,573 ...gently down the stream	My clutch locks on the launch,... tires spin for about a car length. Still enough to lift the front tires off the ground and pull down 1.60 60' times. So you can dump the clutch at 6k and not burn tire all the way down the track! Can't do this on the street though!

Re: A-833 4 speed racers...Setup? [Re: LAR_414] #1113652 04/11/12 11:56 PM 04/11/12 11:56 PM
Joined: Apr 2009 Posts: 3,421 Toronto M mshred master
mshred master M Joined: Apr 2009 Posts: 3,421 Toronto	Quote: My clutch locks on the launch,... tires spin for about a car length. Still enough to lift the front tires off the ground and pull down 1.60 60' times. So you can dump the clutch at 6k and not burn tire all the way down the track! Can't do this on the street though! Just thought about this thread again after starting the thread on tricks to help with transmission strength/ life Definitely has to be more than what is posted...

Re: A-833 4 speed racers...Setup? [Re: mshred] #1113653 04/12/12 03:00 AM 04/12/12 03:00 AM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	No one is mentioning what gear set they are running? The 23 spline has a narrow, standard, wide and overdrive gears. I have a 2.47-1 and a standard 2.66-1 and working on getting good parts together for a 3.09-1 box. Does anyone know if the OD input shaft is the same as a standard 3.09-1? They are both 22 tooth...Tim

Re: A-833 4 speed racers...Setup? [Re: astjp2] #1113654 04/12/12 03:31 AM 04/12/12 03:31 AM
Joined: Aug 2005 Posts: 6,008 Salem Grizzly Moparts Proctologist
Grizzly Moparts Proctologist Joined: Aug 2005 Posts: 6,008 Salem	Astjp2: Thanks for posting that about the 3.09's I did talk to one guy using the 3.09 and he said he had some issues hooking up (class rule, stock-type tires only). Has anyone has ever tried going the wide-ratio 3.09, 1.67, 1.0 route? Kind of like this car. Mo' Farts Moderated by "tbagger".

Re: A-833 4 speed racers...Setup? [Re: astjp2] #1113655 04/12/12 03:33 AM 04/12/12 03:33 AM
Joined: Jan 2003 Posts: 6,570 San Francisco Ca SCATPK master
SCATPK master Joined: Jan 2003 Posts: 6,570 San Francisco Ca	Here is my setup. 68 ply gtx original 18 spline trans 354 rear gear 325/50-15 et radials mcleod street twin clutch about 4 years old 90wt fluid in trans stock bellhousing hurst comp+ shifter [originaly inland shifter] modified shift levers to shorten throw launch at 3000 rpm anymore and spins the tires not powershifting. I know it would do much better if I did. best 60ft 1.81 average 60ft 1.9`s need more time at the track and some nice sticky bias ply et street tires. best et 11.81 @ 119.26 suspension has front and rear sway bars, bilstein shocks, big torsion/strut rods and factory rear leaf springs. weight with my 180lbs in the front seat 4,120lbs And I agree there are not to many guys that will play with an old manual trans at the track Here is a run a couple of years ago. http://youtu.be/N-EwO2XCvIM

Re: A-833 4 speed racers...Setup? [Re: SCATPK] #1113656 04/12/12 03:58 AM 04/12/12 03:58 AM
Joined: Aug 2004 Posts: 2,128 sweden S sshemi top fuel
sshemi top fuel S Joined: Aug 2004 Posts: 2,128 sweden	I cant see how anyone would want the 3.09 ratio gears. Too much rpm drop when going to second gear.

Re: A-833 4 speed racers...Setup? [Re: sshemi] #1113657 04/12/12 08:53 AM 04/12/12 08:53 AM
Joined: Jan 2003 Posts: 4,573 ...gently down the stream LAR_414 OP master
LAR_414 OP master Joined: Jan 2003 Posts: 4,573 ...gently down the stream	I run stock 2.66 gearset. My dad tried the old 3.09 set and broke two input shafts. Actually took the teeth off of one and twisted the splines on another one. We think that the metal is just not as good as the later setups. Either way, the 3.09 gears from the mid 60's A-body transmissions are not up to snuff, strength wise.

Re: A-833 4 speed racers...Setup? [Re: LAR_414] #1113658 04/12/12 12:48 PM 04/12/12 12:48 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	Thats interesting, the mopar performance chassis manual recommends the 3.09 for drag racing. Al Debevec told me about using the 3.09 gears over the 2.66 because high torque motors wanted the rpm change. Tim

Re: A-833 4 speed racers...Setup? [Re: 68LAR] #1113659 04/12/12 01:34 PM 04/12/12 01:34 PM
Joined: Apr 2005 Posts: 1,505 TN S SCATPACK 1 pro stock
SCATPACK 1 pro stock S Joined: Apr 2005 Posts: 1,505 TN	Quote: slick pressure anywhere from 15 - 19 psi rear gear 4.56 Dana You gave everything except the tire size. What size are the tires in your Avatar Puicture? Do they spin much at launch? thanks Old Geezer Racing

Re: A-833 4 speed racers...Setup? [Re: SCATPACK 1] #1113660 04/12/12 01:49 PM 04/12/12 01:49 PM
Joined: Oct 2003 Posts: 4,013 South Park, Pa. 68LAR master
68LAR master Joined: Oct 2003 Posts: 4,013 South Park, Pa.	Tires in my avatar pic are for cosmetic purposes only. (P345/55R15) I blow them off at will on the street if I jump on it. At the track I use 29 12.50 X 15 Hooser slicks. Tires spin about 5 feet at launch. As stated, I've tried the 3.09 gear set. It didn't work for me. My short times were the same as the 2.66 set. My ET's were also about the same. I twisted 2 3.09 input shafts and actually wiped out the cluster gear with the last twist... My car being heavy, I thought the 3.09 set would work real well. In my case it didn't, so I'm sticking with the 2.66 low gear set. 4 speed street legal. Best time 10.99 @ 124 mph on 93 octane pump gas @ 3926# total weight

Re: A-833 4 speed racers...Setup? [Re: 68LAR] #1113661 04/12/12 01:58 PM 04/12/12 01:58 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	I wonder if cryogenically treating the gears would help. Tim

Re: A-833 4 speed racers...Setup? [Re: astjp2] #1113662 04/12/12 02:08 PM 04/12/12 02:08 PM
Joined: Sep 2003 Posts: 10,645 Houston, Tx A AlexP I Live Here
AlexP I Live Here A Joined: Sep 2003 Posts: 10,645 Houston, Tx	What gearset does a 68-70 B-body 23 spline use ? My Build thread: Let the hemi swap begin! 1968 wanna be pro touring whatchamacallit with some fancy stuff and a new roof skin.

Re: A-833 4 speed racers...Setup? [Re: AlexP] #1113663 04/12/12 02:13 PM 04/12/12 02:13 PM
Joined: Jan 2011 Posts: 4,785 Utah and Alaska astjp2 master
astjp2 master Joined: Jan 2011 Posts: 4,785 Utah and Alaska	2.66-1

Re: A-833 4 speed racers...Setup? [Re: astjp2] #1113664 04/12/12 03:15 PM 04/12/12 03:15 PM
Joined: Jan 2003 Posts: 2,734 Charlotte, NC 4 446acuda master
446acuda master 4 Joined: Jan 2003 Posts: 2,734 Charlotte, NC	Quote: No one is mentioning what gear set they are running? The 23 spline has a narrow, standard, wide and overdrive gears. I have a 2.47-1 and a standard 2.66-1 and working on getting good parts together for a 3.09-1 box. Does anyone know if the OD input shaft is the same as a standard 3.09-1? They are both 22 tooth...Tim The late coarse pitch overdrive input is the same as the old 3.09 input but the '75-7 overdrive input is different.

Re: A-833 4 speed racers...Setup? [Re: 446acuda] #1113665 04/12/12 03:29 PM 04/12/12 03:29 PM
Joined: Aug 2004 Posts: 2,128 sweden S sshemi top fuel
sshemi top fuel S Joined: Aug 2004 Posts: 2,128 sweden	Seriosly who would want an rpm drop from 7000 to 4300???

Re: A-833 4 speed racers...Setup? [Re: sshemi] #1113666 04/12/12 04:03 PM 04/12/12 04:03 PM
Joined: Jan 2003 Posts: 2,734 Charlotte, NC 4 446acuda master
446acuda master 4 Joined: Jan 2003 Posts: 2,734 Charlotte, NC	This is about the 1:1 3.09 A833 that has 3.09 first, 1.92 second, 1.40 third and 1:1 fourth. Not much different than the ratios you would find in a Jerico or G-force drag race transmission.

Re: A-833 4 speed racers...Setup? [Re: LAR_414] #1113667 04/12/12 06:07 PM 04/12/12 06:07 PM
Joined: Dec 2011 Posts: 268 ca B brownout enthusiast
brownout enthusiast B Joined: Dec 2011 Posts: 268 ca	There is a bunch of great info in this post. I will share my combo even though I am trying to get it dialed in still. Mainly a street car but it sees the track a lot too. 70 cuda with a 493 not sure of the weight 23 spline transmission 80w90 gear oil best pass launched at 3700 spinning the tires m/t 275/60 drag radials shifting at 6200 (not powershifting) mcleod single disk 11.95 3.23 gears stock suspension ran 12.55 @ 111 Now have some homemade caltracs and stock springs put 3.91s in We will see what happens my 60 ft is horrible. I am shooting for 12.20-.30s -Cody

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