![SEARCH](http://www.mustangworks.com/images/search.png)
![The Mustang Works](http://www.mustangworks.com/images/mw_footer_logo.gif)
© Copyright 1995 thru 2008 - The Mustang Works™. All Rights Reserved.
MustangWorks.com is designed and hosted by Aero3 Media.
MustangWorks.com is designed and hosted by Aero3 Media.
![]() |
#1 |
Registered Member
Join Date: Oct 2001
Location: Madelia,MN USA
Posts: 58
|
![]() I want to finalize my rear end for drag racing over the winter and want to know if anybody here knows if with my setup and 26" M/T slicks 4.30 gears will get me to the end of the 1/4 mile with out shifting into 5th gear. I suppose 28" Goodyears would help the rpm's?? I want to keep the Victor Jr heads in the high rpm's and have solid internals to rev the stroker to 6,800 maybe? If I leave the line and hook I'd rather have 4.30 than 4.10, but I don't have any experience with either of these ratio's but like always I'm sure someone here does. I have a tremec TKO if that matters,Thanks
__________________
331 stroker, JE 8.5:1 pistons, H-beam rods, steel crank, main cap, msd with 3step, BBK ceramic long tubes,TKO, 4.30's, motorsport Z303, Victor Jr aluminum heads, crane gold 1.6, southside lift bars, 90/10 front, 50/50 rear, centerforce dual friction clutch, Vortech S-trim soon. |
![]() |
![]() |
![]() |
#2 |
Procharged!
Join Date: May 1999
Location: Hanover, PA
Posts: 1,539
|
![]() With the 4:30's depending on how much you hook and how much power it builds should put you in the 6500-6800 trap you are looking for. The 28" tire will have less sidewall deflection if your car is voilent off the line, and will drop the rpms about 300-400.
In your sig it says S-Trim soon...you will only want a 3:55 gear then.
__________________
D/R 10108 NMRA Drag Radial, 25.5 chassis, F1R Check out RNH Performance Performance Engines and Custom Fabrication. From Mild to Wild we can build what you want, when you want it. FOR SALE Stainless Steel Torque Box Supports |
![]() |
![]() |
![]() |
#3 |
Registered Member
Join Date: Oct 1999
Location: Pierre Part, La. U.S.A.
Posts: 1,850
|
![]() I run a tremac and 4.30s, right now with 28.5 tall tires I cross at about 5500 in fourth @ 108mph. With a 26 inch tire two years ago I was running 112-113 and crossing at 6000. With a shot of nos on top of that I was looking at the shift light long before the finish line
__________________
88workcar 1988 Mustang LX 342. 417rwhp @ 6800. 28 X 10 ET Drag, 4.30s, 10.69 @ 126.43 1.42 60ft. 11.13 @ 127.7 on BFGs 1.72 60ft Rice Hater # 42 To be old and wise, You must first be young and stupid ![]() |
![]() |
![]() |
![]() |
#4 |
Moderator
Join Date: Aug 2000
Location: Milan, OH
Posts: 2,699
|
![]() 4.56's and 26" tall slick put me through the traps at about 7100rpm at 121mph. If I were still a stick car, I'd never consider shifting to 5th (on a 5-speed transmission anyways). The 5th gear is very weak and its underdrive becomes a torque de-multiplier.
You'll need to set your sights on what kind of performance you aim to get out of the car and then select your gearing based on that MPH, the desired rpm at the stripe (usually about 400rpm above peak HP), and the size of tire you'll be using. Gearing is everything so do your homework.
__________________
Jeff Chambers 1990 Mustang GT 10.032 Seconds / 137.5 MPH 14-time Street Warrior World Record Setter CRT Performance 2001 Tropic Green Mustang GT - 12.181 / 113.2 MPH 2002 Ford F-250 Crew Cab 7.3l Power Stroke - 17.41@77.2 "There's nothing boring about a small block automatic shifting gears at 9400 rpm!" |
![]() |
![]() |
![]() |
#5 |
Registered Member
Join Date: Apr 2001
Location: Gallatin, Tn
Posts: 1,326
|
![]() I cross the line at 5800 with 4.10's
__________________
![]() |
![]() |
![]() |
![]() |
#6 |
Registered Member
Join Date: Aug 2002
Location: broken arrow
Posts: 212
|
![]() if your going with a supercharger soon get a set of 3.90's i had 4.10's in my supercharged '93 cobra and I also have a tremec and i had to shift into 5th with the 4.10's now I have 3.73's and they are alot better but i could probably get away with the 3.90's and still stay in 4th through the traps.
__________________
Rice Haters Club member #68 '93 Cobra 10.20@135 '89 Gt Coupe 12.20@115 |
![]() |
![]() |
![]() |
|
|
![]() |
||||
Thread | Thread Starter | Forum | Replies | Last Post |
4.30 gears with T-5 | spike | Windsor Power | 10 | 09-11-2001 07:58 AM |
Vibration from shifter @ high-rpm's in 3rd+ gears only !! | jetuomi | Windsor Power | 14 | 07-18-2001 07:16 PM |
Gears, need help!!!! | Edgar Negron | Windsor Power | 3 | 05-27-2001 03:10 PM |
Why 3:55 gears for blower cars? | Mike_W | Windsor Power | 2 | 05-26-2001 09:44 AM |
Trying to figure out what gear I have... | xspeed02 | Windsor Power | 7 | 03-31-2001 10:06 AM |