4:30 gears - Ford Powerstroke Diesel Forum
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post #1 of 8 Old 03-07-2008, 09:37 AM Thread Starter
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4:30 gears

I'm going to be putting gears in my truck and i can't decide between 4:30 and 4:56... i'm running 37 in tires and i'm a daily driver...what would my rpms be with 4:30 compared to stock and then what would my rpms be with 4:56 compared to stock thanks for all the help guys
-Zach

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #2 of 8 Old 03-07-2008, 09:46 AM
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4.30 if you dont tow 4.56 if you do tow..... ill be going with 4.30's myself because i rarely tow anything more than my jeep or some quads.....
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post #3 of 8 Old 03-07-2008, 09:49 AM Thread Starter
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i just want what ever is the closest to stock

2001 F350 4x4 crew cab short bed lariat
k&n intake
Dual mbrp turbo back exhaust
DP Tuned
Dipricol Optic gauges
8inch danahoe lift
4:30 gears
Built tranny
Headlights
Recon lighting
20x10 moto metal 951 wheels
37x13.5x20 toyo M/T tires
Superlift truspeed
Kenwood DDX 6019
6.5 O2s mid drivers
4 12 Kicker L7s cut through in a bandpass box


Dads truck
Stock F250 lariat 2008 green and tan

Pulling truck
04 lariat dually red/maroon and silver
Full Banks System
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post #4 of 8 Old 03-07-2008, 09:57 AM
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3.73 is closest to stock... LOL I have no issues towing up to 30k GVW with my stock 3.73's...

01 F-250 SC PSD,320k,16 Isspro Gauges, AFE-2,CCV Mod,IAH delete,map reg,Modded H2e, 6.0 IC, 230/100 from P.I.S, Studs, 910 springs, Forged rods, Water injection,Hydra chip-No Limit/Gearhead tuning, Swamps HVHF IDM, MBRP 4" dual's, Aero, 6" tip's, 4" Revtek lift, 37/12.5/16.5 MT's
Joe



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post #5 of 8 Old 03-07-2008, 09:58 AM
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If you go lower I'd do 4.30's for those 37's

Looking for 05-07 front end with Harley Lights
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post #6 of 8 Old 03-07-2008, 10:27 AM
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4.30 for 37" tires. Freeway rpm's 2050 @ 70, 2100 @ 80. With 625/700 egt's.

1970 F250 Crew Cab rebuilt/restored w/Cummin s 4bt

8v, M5R2 Tranny, VE pump, DennyT stage 2 pin, M&H Dynamic Timing, 3200k gov spring, Hx30/Hx35 Twins, 40hp styx, smoke screw screwed, star wheel cranked, Hydroboosted
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post #7 of 8 Old 03-07-2008, 10:29 AM
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do 4.30's i got 4.56s with 37's and freeway driving sucks they are great for towing heavy loads though.......

06 6.0 6spd....BWD compounds and some other stuff
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post #8 of 8 Old 03-07-2008, 01:20 PM
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4.56's + 37s + highway = no good
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