Gear ratio again - The 1947 - Present Chevrolet & GMC Truck Message Board Network

cochino12 · 09-01-2004, 04:23 PM

I decided to just stay with my th350 instead of swapping in a 700r so here is my question. I got a pretty good deal on a front/rear posi and a 2 sets of 4:10 and am worried the gears might not be steep enough. Does anyone have a similar set up? I dont want this thing to be a complete dog off the line but it's still my DD. thanks

Adam

MylilBowTie · 09-01-2004, 04:36 PM

Dog off the line with 4.10s? What size tires you plan on running?

cochino12 · 09-01-2004, 04:43 PM

oops i thought I put that in there they are about 34.5" tall

MylilBowTie · 09-01-2004, 05:21 PM

You are on the low side (better gas mileage) than power.

http://www.4lo.com/calc/geartable.htm
Take a look

79Silv4x4 · 09-01-2004, 11:22 PM

what gears did you start with? I have 35 inch tires and 3.42 gears (TH350) and it's no dog off the line. Cruises great at 70 too. I will go to 4:11 when I swap axles since I don't use it for a lot of hiway travel. . .

cochino12 · 09-02-2004, 10:11 AM

Quote:

Originally Posted by 79Silv4x4

what gears did you start with? I have 35 inch tires and 3.42 gears (TH350) and it's no dog off the line. Cruises great at 70 too. I will go to 4:11 when I swap axles since I don't use it for a lot of hiway travel. . .

I believe they are 3:08 now and it is painful to start out, the wore out tranny aint helpin much either I guess.

09-01-2004, 04:23 PM	#1
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	Gear ratio again I decided to just stay with my th350 instead of swapping in a 700r so here is my question. I got a pretty good deal on a front/rear posi and a 2 sets of 4:10 and am worried the gears might not be steep enough. Does anyone have a similar set up? I dont want this thing to be a complete dog off the line but it's still my DD. thanks Adam __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

09-01-2004, 04:36 PM	#2
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	Dog off the line with 4.10s? What size tires you plan on running? __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

09-01-2004, 04:43 PM	#3
cochino12 It followed me home? Join Date: Mar 2003 Location: Yup Posts: 5,751	oops i thought I put that in there they are about 34.5" tall __________________ Adam That's why they call it a shortcut Kyle, if it was easy it would just be the way. 86 c-10 SWB 85 CCSB 90 GMC K30 Crew SRW 1985 C30 Dually

09-01-2004, 05:21 PM	#4
MylilBowTie Right turn Clyde Join Date: Nov 2002 Location: Cincinnati, Ohio Posts: 2,911	You are on the low side (better gas mileage) than power. http://www.4lo.com/calc/geartable.htm Take a look __________________ 1974 C25 LWB: 454 4bbl Carb / TH400 / 3.73 1992 Camaro RS 305 TBI

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09-01-2004, 11:22 PM	#5
79Silv4x4 Workaholic Join Date: Oct 2002 Location: Katy, TX Posts: 1,589	what gears did you start with? I have 35 inch tires and 3.42 gears (TH350) and it's no dog off the line. Cruises great at 70 too. I will go to 4:11 when I swap axles since I don't use it for a lot of hiway travel. . .



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