Where to get 4.11's or 4.56's for our IFS

quickbiker · Post by **quickbiker** » Fri Dec 05, 2003 9:34 pm

I know someone knows. I think Hobie may know from one of his ZR2 buddies. Where???

Post by **HenryJ** » Fri Dec 05, 2003 9:54 pm

quickbiker wrote:I know someone knows.

Might be worth refreshing your memory with these threads:
What gears for 33" tires
Low gear questions-Hobbie?

a2b · Post by **a2b** » Fri Dec 05, 2003 10:13 pm

hmmm. i have seen them in magazines before...but i just let the local shop order whatever gears they came up with..i have 4.10's

quickbiker · Post by **quickbiker** » Fri Dec 05, 2003 11:37 pm

Yea, I guess 4.10's are the safest lowest gears to go with. That should keep me about what I am now with 31's. I see it may be just a tad better (lower) with 4.10's and 33's.

adrenalnjunky · Post by **adrenalnjunky** » Fri Jan 09, 2004 1:28 pm

bringing this thread back from the past ....

I'm looking at swapping gearing in my truck to either 3.73 or 4.10 --

Looking at Precision Gear's website - http://www.precisiongear.com/gmring.htm They make a 4.11 for the IFS, but a 4.10 for the rear. I know that different people callthe same ratio different things, (eg 4.105) Why would they call one a .11 , and the rear a .10? If I go with these would I be ok?

Also, looking at their RPM calculator,

http://www.precisiongear.com/pgtech_rpm.htm

My 3.42's on a 28 inch tall tire runs 2155RPM in overdrive at 75 mph. (Assuming a 1:1 ratio)
Swap numbers to a 31 inch tall tire, and 3.73's and you get 2122 RPM's - seems like the closest Ican get to stock settings. Theoretically I could swap tires and gears and my PCM wouldn't need to be reprogrammed for my speedometer to be correct (or close enough.)

and dropping to the 4.10's and 33's gives a 2192 RPM figure at 75 mph. [/url]

Post by **HenryJ** » Fri Jan 09, 2004 1:39 pm

adrenalnjunky wrote:I'm looking at swapping gearing in my truck to either 3.73 or 4.10 --

My vote goes to the 4.10 and 31". It is nearly the same as the 3.73/29" tire combo , which is the best final ratio ,IMO.

Looking at Precision Gear's website - http://www.precisiongear.com/gmring.htm...Also, looking at their RPM calculator,http://www.precisiongear.com/pgtech_rpm.htm...(Assuming a 1:1 ratio)...

Don't forget that there are calculators on our website too : S-10Crewcab.com Calculators
And Detailed specifications which show that 3rd is 1:1 , overdrive is .70

adrenalnjunky · Post by **adrenalnjunky** » Sat Jan 10, 2004 9:24 pm

Ok--but does anyone have a good explanation why their 7.25 ring is labeled a 4.11, and their 10 bolt 7.625 is listed as a 4.10 or does it make any difference?

quickbiker · Post by **quickbiker** » Sat Jan 10, 2004 9:27 pm

No difference. That's like having a thrust washer .0221 instead of .0220. Not a big deal. Did that make any sense?

adrenalnjunky · Post by **adrenalnjunky** » Sat Jan 10, 2004 9:29 pm

absolutely --- "Don't sweat the small stuff"

coffeedrnkr · Post by **coffeedrnkr** » Wed Aug 18, 2004 4:33 pm

I was talking to a guy I know about switching gears and he said the front's are 4.11 so they are a little more than the rear so the front is pulling in 4wd and not being pushed. That was his theory.

In my opinion that is soo little of a difference that it wouldnt matter.

Post by **HenryJ** » Wed Aug 18, 2004 4:46 pm

coffeedrnkr wrote:...the front's are 4.11 so they are a little more than the rear so the front is pulling in 4wd and not being pushed. That was his theory.

The theory sounds good but it is backwards with those ratios. the 4.10 is faster than the 4.11, so the rear would be pushing the front.
That would not be really helpful, but it is very little difference.

coffeedrnkr · Post by **coffeedrnkr** » Wed Aug 18, 2004 5:12 pm

Whoops, my bad I typed it wrong. thanks for the correction

KCustom · Post by **KCustom** » Wed Aug 18, 2004 5:48 pm

I had 4.11 in the rear and 4.10 in the front of my 95 Blazer....I was told the same theory...front pulls more.

S-10CREWCAB.NET

Where to get 4.11's or 4.56's for our IFS

Where to get 4.11's or 4.56's for our IFS

Re: Where to get 4.11's or 4.56's for our IFS

gears