Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2606892
01/15/19 01:18 PM
01/15/19 01:18 PM
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Joined: Oct 2007
Posts: 4,209 New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,209
New York
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Which axle do you have, 8-1/4"? Don't invest in it. Nitrous will have far greater results.
Boffin Emeritus
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2606982
01/15/19 03:55 PM
01/15/19 03:55 PM
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Joined: Aug 2003
Posts: 4,684 On the parachute mount
n20mstr
master
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master
Joined: Aug 2003
Posts: 4,684
On the parachute mount
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Shoot it,
you will be amazed at what a little .052 nitrous jet will do. Probably get 3-5 passes out of a bottle also.
....BAD A$$ STREET CAR.....
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2606984
01/15/19 03:59 PM
01/15/19 03:59 PM
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Joined: Dec 2005
Posts: 11,608 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,608
Fulton County, PA
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Gears are a one time expense and install deal. Nitrous needs to have the bottle(s) refilled constantly. What is N2O now? $5/lb?
Is this car street driven? Saving your pennies for a decent 360 or similar upgrade may be the best route.
Getting weight out of the car is the easiest, cheapest way to make it go faster.
Last edited by CMcAllister; 01/15/19 04:00 PM.
If the results don't match the theory, change the theory.
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Re: N.o.s or 4.10 gears?
[Re: CMcAllister]
#2606989
01/15/19 04:04 PM
01/15/19 04:04 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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How about lever C. Buy a running 360 and upgrade the cam slightly.
Last edited by pittsburghracer; 01/15/19 04:04 PM.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2606994
01/15/19 04:14 PM
01/15/19 04:14 PM
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Joined: Jan 2003
Posts: 20,184 Park Forest, IL
slantzilla
Too Many Posts
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Too Many Posts
Joined: Jan 2003
Posts: 20,184
Park Forest, IL
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What is your objective?
I can tell you from experience that trying to bracket race with spray is a lot of work. Can it be consistent? Yes, but you have to keep really good control of bottle temp and pressure. Not easy to do on a hot day, especially if you get stuck in the lanes by an oil down or such. If it's cold out that brings on another bunch of fun.
Going from 3.55 to 4.10 will not pick you up as much as you'd think.
Another vote for a 360.
"Everybody funny, now you funny too."
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Re: N.o.s or 4.10 gears?
[Re: slantzilla]
#2606998
01/15/19 04:21 PM
01/15/19 04:21 PM
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Joined: Aug 2003
Posts: 43,223 Bend,OR USA
Cab_Burge
I Win
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I Win
Joined: Aug 2003
Posts: 43,223
Bend,OR USA
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What is your objective?
Going from 3.55 to 4.10 will not pick you up as much as you'd think.
Another vote for a 360. I sold a 4 speed Duster to a friend, it had 3.55 posi third member in it,we swap in a posi 4.89 gears third member, it made that car FEEL a lot faster but it didn't make much ET or MPH difference in the 1/4 mile It picked up from 14.5s to 14.20 to 14.30sET If you want to go faster try a better converter and focus on making more power
Last edited by Cab_Burge; 01/15/19 04:22 PM.
Mr.Cab Racing and winning with Mopars since 1964. (Old F--t, Huh)
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2607048
01/15/19 05:54 PM
01/15/19 05:54 PM
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Joined: Jan 2003
Posts: 13,369 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
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Like has been said already, the gear change won't get you much. The 100 shot will pick it up a LOT and be a helluva lot of fun. Definitely the best bang for the buck. Bracket racing it w/ the nitrous may or may not be for you.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: N.o.s or 4.10 gears?
[Re: an8sec70cuda]
#2607054
01/15/19 06:13 PM
01/15/19 06:13 PM
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Joined: Feb 2005
Posts: 20,185 PA.
pittsburghracer
"Little"John
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"Little"John
Joined: Feb 2005
Posts: 20,185
PA.
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Like has been said already, the gear change won't get you much. The 100 shot will pick it up a LOT and be a helluva lot of fun. Definitely the best bang for the buck. Bracket racing it w/ the nitrous may or may not be for you. But it cost money EVERY time you push the button. Not needed to pick up how much ET he would be happy with.
1970 Duster Edelbrock headed 408 5.984@112.52 422 Indy headed small block 5.982@112.56 mph 9.42@138.27
Livin and lovin life one day at a time
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2607086
01/15/19 07:08 PM
01/15/19 07:08 PM
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Joined: Jan 2003
Posts: 13,369 Marion, South Carolina [><]
an8sec70cuda
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 13,369
Marion, South Carolina [><]
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I understand what you're saying John, but he gave us 2 options he's looking at and he's obviously on a budget.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2607106
01/15/19 07:35 PM
01/15/19 07:35 PM
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Joined: Oct 2015
Posts: 570 UK
rb446
mopar
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mopar
Joined: Oct 2015
Posts: 570
UK
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All depends on how much you want to pick up from 15.6's, assuming your@say 3400lbs all in your making around 175fwhp not knowing your mph..86>87mph?. Adding a 100>125 shot could take you to 13.5's@99>100mph. It will be almost like going to 4.10's with your 3.55's with the added torque of N20 and will lower your 60's as long as you still hook and be the biggest gain you will get for minimal cost/effort over going the NA route.
1969 'Cuda 446ci, best 9.96@133.9 in 1990 1971 340 'Cuda, best 11.01@122.8 in 1987
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Re: N.o.s or 4.10 gears?
[Re: Crabra]
#2607172
01/15/19 09:22 PM
01/15/19 09:22 PM
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Joined: Dec 2005
Posts: 11,608 Fulton County, PA
CMcAllister
Mr. Helpful
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Mr. Helpful
Joined: Dec 2005
Posts: 11,608
Fulton County, PA
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Set of cleaned up 360 or J heads, 4 bbl, intake and a little cam would pick it way up. Converter would be a big help too. Either of the two options are $400 - 500. Pretty good start on other options.
Last edited by CMcAllister; 01/15/19 09:23 PM.
If the results don't match the theory, change the theory.
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