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Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2237764
01/20/17 10:37 AM
01/20/17 10:37 AM
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Finalnd, Perkele
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jyrki Offline
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Finalnd, Perkele
Last summer, 11.02 in a '71 cuda with 3.55's and slightly modified 6.1 SRT hemi, and it will run better, something was holding it back. http://kuvia.1g.fi/kuvat/2016/FHRA/Night+Race+Finals/Saturday/MOP_4385.jpg

And around 2004 10.31 with 3.23's, Indy headed RB on pump gas, 3500 lbs.
http://kuvia.1g.fi/kuvat/Tapahtumat+2007/BurnOut+Party+25.8.2007/25.8_07+204.jpg


Plynouth VIP '67 TT IC EFI
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: GY3] #2237823
01/20/17 12:55 PM
01/20/17 12:55 PM
Joined: Feb 2003
Posts: 1,942
Metro Detroit
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Metro Detroit
Originally Posted By GY3
Originally Posted By OUTLAWD
Originally Posted By OUTLAWD



Not low 11's but 11.50 @ 116
66 Belv. 493, -516 iron heads, .530 cam, 9.5" converter, 3.55's and a 28" tall tire. I have a plate on it but have yet to open the bottle up. The converter is probably a bit loose, but I expect high 10's with a relatively small shot.


I ended up hitting the Belvedere with a 0.051 N2O jet. It ran a string of 10.95-10.98 once I got the timing where I wanted it, before I got a talking to for no roll bar tsk

It had a 10.8x in it, but the track was going away and they shut it down before I could get the launch sorted

Car is 3700# at the line.

I basically use it as a daily driver during the 2 month MI summer...



Awesome! I thought about doing this for the upcoming season as well. What did you set your total timing at? Did you change spark plugs to a different heat range?


I think I ended up with 28-30 degrees 100 octane unleaded (O2 sensor for the EFI and Lead don't get along). NA with pump gas I run 32-34. I went 1 step colder plug, non-projected tip.


Faster, Faster until the thrill of speed overcomes the fear of death...

71 Swinger - slowly collecting dust/parts
66 Belv. II - just a streetcar
88 Mustang - turbo LS beater
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2237948
01/20/17 04:14 PM
01/20/17 04:14 PM
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Frostbitefalls MN (Rocky&Bullw...
gregsdart Offline
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I accidently left in second gear with my Dart many years ago. BIG stroker (for the day!) The dial was 10.20, I ran 10.45 flat out. Loose converter though. A lot depends on that converter being loose enough to be high in the horsepower curve. If it isn,t that will really hurt ET. Leaving in 2nd was like my 4.10 gear turned into a 2.70!!


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: gregsdart] #2238012
01/20/17 06:09 PM
01/20/17 06:09 PM
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North, Alabama
D-50 Offline
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North, Alabama
About 4 years ago I broke the gears I was running and stuck some 3.50 gears in my D50 with 315/60 Drag Radials. I was surprised that it did not slow down very much. It ran a 6.39 at 109 crossing the finish line in 2nd gear in the 1/8. With a 1.39 60 ft. Wallace racing calculators says that is around a 10.10 in the 1/4. It is a 394 ci small block running on pump gas (93 octane) through the mufflers with No power adder at 2950 lbs.


1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: gregsdart] #2238083
01/20/17 08:30 PM
01/20/17 08:30 PM
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Wichita
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GY3 Offline
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Originally Posted By gregsdart
I accidently left in second gear with my Dart many years ago. BIG stroker (for the day!) The dial was 10.20, I ran 10.45 flat out. Loose converter though. A lot depends on that converter being loose enough to be high in the horsepower curve. If it isn,t that will really hurt ET. Leaving in 2nd was like my 4.10 gear turned into a 2.70!!


I was doing that in a true street radial race this summer. 100 lbs. over the rear bumper, leaving in 2nd and best time was 11.94 @ 121 mph. Very hard to hook a stroker with a 275 street tire!


'63 Dodge 330
11.19 @ 121 mph
Pump gas, n/a, through the mufflers on street tires with 3.54's. 3,600 lbs.
10.01 @ 133mph with a 250 shot of nitrous an a splash of race gas. 1.36 60 ft. 3,700 lbs.

Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: GY3] #2238122
01/20/17 09:42 PM
01/20/17 09:42 PM
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Posts: 1,056
Mt.Vernon IL
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Mt.Vernon IL
Originally Posted By GY3
Originally Posted By gregsdart
I accidently left in second gear with my Dart many years ago. BIG stroker (for the day!) The dial was 10.20, I ran 10.45 flat out. Loose converter though. A lot depends on that converter being loose enough to be high in the horsepower curve. If it isn,t that will really hurt ET. Leaving in 2nd was like my 4.10 gear turned into a 2.70!!


I was doing that in a true street radial race this summer. 100 lbs. over the rear bumper, leaving in 2nd and best time was 11.94 @ 121 mph. Very hard to hook a stroker with a 275 street tire!


I used to run true street radial at my local drag strip years ago. Best I ever did with my old 511 and 3.23 gears with 275 tire was a 6.45 in the 1/8th. The brand of tire that I ran was primewell or mastercraft. I would buy a set and do burntouts until they were halfway worn and then they would start hooking good. I would do a half throttle take off and ease into full throttle in 1st gear.

Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2240143
01/23/17 11:49 PM
01/23/17 11:49 PM
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Akron, Ohio
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Akron, Ohio
This RPM calculator has always been real accurate for me for the street and the track, but I've never raced with highway gears. Does this look ok to you guys? About 5450-5500 RPM's at the 1/4 mile stripe with 3.23's, 26" tall slick, and 'thinking' my car will go around 127mph.

I have a 9.5" converter that seems to flash pretty high so I think it will work with 3.23's. If I use a 28" 275/60 Radial I could go to 3.55's but I sure do like the 3.23's when we cruise to a car show an hour or more away from home, I hated my old 3.55's.

I don't think 1/4 mile ET will be much different between a 3.23 and 3.55 but I've never tried it before. My previous cars all had 8" converters and 4.56's.

Screenshot_20170123-091506.jpg

1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ProSport] #2240164
01/24/17 12:16 AM
01/24/17 12:16 AM
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Canton, Ohio
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Saw one of your other posts about setting up another pumpkin. Was going to suggest you try/use a 26/10 slick instead. But, didn't know the actual tire diameter that you are using now to compare.

But, yes, a 26" slick would work perfect IMO for your car and gear combo. No need for another pumpkin IMO.

You wont quite have the gear that a typical 4.56/32 tire @ 127 6080 RPM, would have. But still not to bad with your 500ci, that a 3.23/26 tire @ 127 5301 RPM would give you.

Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2240167
01/24/17 12:22 AM
01/24/17 12:22 AM
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Akron, Ohio
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Akron, Ohio
I agree Mike, I think it will work for a street car that might se a track twice a year. I currently run a 28" 275/60/15 street radial on the street so I figured a 26x10" slick would be good for the track.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ProSport] #2240617
01/24/17 08:28 PM
01/24/17 08:28 PM
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Canton, Ohio
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Bob, when spring comes and your ready to try some 26/10,s, I have a set sitting here mounted, that Ive used on my dart. Your welcomed to try them out. up

Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2240662
01/24/17 09:46 PM
01/24/17 09:46 PM
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Akron, Ohio
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OK thanks Mike I might take you up on that offer.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2240795
01/25/17 01:26 AM
01/25/17 01:26 AM
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Posts: 625
Oakville, Wa
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Oakville, Wa
9.0s @ 160 at 3600lbs 3.54 gear. Shooting for 8.0s this year

Last edited by HOTMOPR; 01/25/17 01:27 AM.

67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: HOTMOPR] #2240801
01/25/17 01:37 AM
01/25/17 01:37 AM
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Akron, Ohio
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Originally Posted By HOTMOPR
9.0s @ 160 at 3600lbs 3.54 gear. Shooting for 8.0s this year


You're cheating! Kidding, love your car. You easily have MPH for 8.80's already I would think.


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ProSport] #2240813
01/25/17 02:08 AM
01/25/17 02:08 AM
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Oakville, Wa
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Originally Posted By ProSport
Originally Posted By HOTMOPR
9.0s @ 160 at 3600lbs 3.54 gear. Shooting for 8.0s this year


You're cheating! Kidding, love your car. You easily have MPH for 8.80's already I would think.

Ya its a fat pig to get rolling then it chatters the tires well into second gear. hoping to get that all fixed this winter.. Its coming too fast!!


67 Barracuda, 470" B, Glide, FuelTech FT600, Precision, Ptc, QA1, Calvert, Smith racecraft, Afco, Dana 60. 275 radials
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2240919
01/25/17 10:57 AM
01/25/17 10:57 AM
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Carson City, NV
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Carson City, NV
1967 Barracuda HT, 410 SB, 3.23, 28" tire. Ran 12.34 @ LVMS and 106. I was a little leam. I think it will go low 12's and around 110 at Famoso. Drive it to the strip race, and go home. 15 MPG on the road.

Last edited by babarracuda; 01/25/17 10:58 AM.
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2358396
08/23/17 12:23 AM
08/23/17 12:23 AM
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Minnesota
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Bringing this thread back from the dead. Can't wait to see how much slower my car is now with 3.23's.

Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2405978
11/19/17 04:42 PM
11/19/17 04:42 PM
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Akron, Ohio
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This thread made me decide to go with 3.23 gears in my Duster awhile back, I finally got to drive it to the track this year and it went 10.69 at 124.75 with a 1.51 60 foot. I'm extremely happy with it.
500" low deck, 10to1 compression, small 557 lift purpleshaft cam, Eddy cnc ported MW heads, 950 carb, small B-body 1.75" headers, mechanical water pump and fan, never runs hot.
727 with Dynamic 9.5" converter that needs tightened(17.5% slip), 8.75 rearend with factory leaf springs with one new leaf added to each spring, Rancho adjustable rear shocks, 275/60 drag radial.
Launch at 2000, shift at 5800, trap at 5800.

received_1618998898143897.jpeg

1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2405999
11/19/17 05:49 PM
11/19/17 05:49 PM
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So. Burlington, Vt.
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fast68plymouth Offline
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So. Burlington, Vt.
Sounds like a great Drag Week type combo.


68 Satellite, 383 with stock 906’s, 3550lbs, 11.18@123
Dealer for Comp Cams/Indy Heads
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: fast68plymouth] #2406047
11/19/17 08:13 PM
11/19/17 08:13 PM
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Posts: 17,916
Akron, Ohio
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Originally Posted By fast68plymouth
Sounds like a great Drag Week type combo.


I drive it a lot and go to car shows over an hour away, drove it to and from the track a couple times. I should probably start a new thread on this, but I'm curious of your input and others input on my 9.5" Dynamic converter that's slipping 17.5%.

Normally I prefer an 8" converter with about 3% slip but in this particular street car this converter feels great on the street and strip, so I would not be very happy if I had it tightened up and it hurt performance because of the 3.23 gears. If this converter was tightened to around 5% slip the car may run better and MPH better, or maybe not....


1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
Re: Your low ET's 11's 10's with 3.23/3.55 gear [Re: ademon] #2406054
11/19/17 08:38 PM
11/19/17 08:38 PM
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NEW JERSEY
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dynamite Offline
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NEW JERSEY
THE 56 has been running 11'S ever since I built the 493..has sidewinder OTB heads from Marsh, has a small hyd roller cam 530.530 lift from Bullet,is 3400 lbs plus my 200 lbs,, best 60 ft 1.69.. best et is 11.38 @ 119.5 mph..3k stall converter. 3;55 8 3/4 Just pulled the motor ,putting it in a light weight, ------..gonna sell the 56

2011-08-15 21.11.56.jpg
Last edited by dynamite; 11/19/17 08:39 PM.
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