Author Topic: gear ratio's (Read 6301 times)

race · « **on:** Apr 13, 2007, 08:13:49 PM »

I have an 83 with a carb'd 87re motor with header and other mods running 33's and running at high altitudes 5000+ and hauling camping gear and a 16 ft fiberglass fishing boat going to buy new diff within weeks of now and wondering on ratio 4.88 or 5.29 not sure on the rpm's of each at 60 mph or so even unloaded the marlin trans has rarley seen 5th gear any help is great thanks alex p.

dirtchicken · « **Reply #1 on:** Apr 13, 2007, 08:15:21 PM »

I don't see a question mark anywhere. What are you trying to figure out?

DTB · « **Reply #2 on:** Apr 13, 2007, 08:16:26 PM »

I would go 4.88s........5.29 might be wound up a little too much on the highway

Shamb · « **Reply #3 on:** Apr 13, 2007, 08:25:58 PM »

agree'd, if you plan on sticking with 33's i'd go 4.88's

your gonna lose alot more gas w/ 5.29's and that engines gonna be at higher rpms...

I used to see 5th gear in my 82' with a stock 22R on 37's w/ 5.29's

So 33's and 4.88's should be fine.

Rocksurfer · « **Reply #4 on:** Apr 13, 2007, 08:45:12 PM »

Yup, I'd go with 4.88's and 33's on a dd, now if it is just an occasional use vehicle get the 5.29's

Thor84 · « **Reply #5 on:** Apr 19, 2007, 12:08:09 AM »

just wondering what gears are in a 86 yota
i have heard different ppl say different numbers so im wondering what the correct numbers are

86 4runner · « **Reply #6 on:** Apr 19, 2007, 01:09:26 AM »

Quote from: Thor84 on Apr 19, 2007, 12:08:09 AM

just wondering what gears are in a 86 yota
i have heard different ppl say different numbers so im wondering what the correct numbers are

4.10

TRHS1980 · « **Reply #7 on:** Apr 19, 2007, 09:03:52 AM »

Judging by how you use your truck, I'd have to say 5.29's is the way to go. 4.88 gets you back around the stock gear ratio, so imagine trying to take a loaded truck with stock gears and tires to wherever you take your truck. That four banger would be struggling. So overgear it a bit and expect to have worse gas mileage on flatland and better mileage in the hills.

brainlessfool · « **Reply #8 on:** Apr 19, 2007, 07:20:19 PM »

I have 4.88's on my 83 with a 5spd.

I tow and I have a cab-over camper.

love the 4.88's just a little lower than stock as it works out.

alt? don't know. never had it over 6K.

Thor84 · « **Reply #9 on:** Apr 20, 2007, 12:45:50 AM »

ty for the info about my gears

BigMike · « **Reply #10 on:** Apr 20, 2007, 01:10:08 AM »

I am going to go against the grain on this one.

I agree that 4.88s are good for both 33s and 35s, but in race's case, this rig is being driven on mountain roads? (high altitudes) and he rarely gets into 5th gear. Combine that with towing of equipment and the fact that he is rarely on the freeway, I say its 5.29s all the way. 5.29s also leave the door open in case you decide on running larger tires in the future. If any one has daily driven a carb 22R in high elevations then you know how much it sucks.

Quote from: race on Apr 18, 2007, 09:37:24 PM

I wonder what are the rpm's of the gears 4.88s and 5.29s

Here are some speed estimates using my super old Vehicle Speed Calculator:

Gearing	31" @ 3000 rpm	33" @ 3000	35" @ 3000	37" @ 3000
1st gear (4.88s)	14.4 MPH	15.3 MPH	16.3 MPH	17.2 MPH
2nd	26.5	28.2	29.9	31.6
3rd	41.1	43.7	46.4	49.0
4th	56.7	60.3	64.0	67.6
5th	66.7	71.0	75.3	79.6
---	---	---	---	---
1st gear (5.29s)	13.2 MPH	14.1 MPH	14.9 MPH	15.8 MPH
2nd	24.4	26.0	27.6	29.2
3rd	37.9	40.3	42.8	45.2
4th	52.3	55.6	59.0	62.4
5th	61.5	65.6	69.4	73.4

Wermz84 · « **Reply #11 on:** Apr 20, 2007, 09:24:19 AM »

Quote from: BigMike on Apr 20, 2007, 01:10:08 AM

..If any one has daily driven a carb 22R in high elevations then you know how much it sucks.

My carbed truck runs like absolute crap at high elevations.

TRHS1980 · « **Reply #12 on:** Apr 22, 2007, 09:44:54 PM »

Quote from: race on Apr 21, 2007, 09:47:00 PM

I'm glad someone has been to high alt and knows what it's like coming from some racing friends and the corrected alt can jump to 8000+ and that's at 4600 non corected I work on boat's and we fight this all day/every year I still after all these years have to give MARLIN AND HIS CREW MANY THANKS FOR DRIVING MY TRANS TO ME IN UT! you guy's are the best! as for the gears I'm for the 5.29s with big mike but when I do this I also will be doing a bigger cam but can't see that as big as the gears when I'm going hunting loaded to the max I'm at speed as fast as I dare to go at 60-65 mph as long as th rpm's are around 3000 the truck runs the flats great but those over passes and grades are a killer I'm haulin for three and two dogs and all the bull crap with a shell and a boat so if it's reving to far in 4th there is the 5th gear that has rarley been used if in 5th its possibly over reving I'll be glad to slow down and have another budweiser or just relax and cruise I go at night and leave early morning not to stress the truck or me and 60-65 is ok for max speed I think 5.29.s? I looked at the speed and rpm's of the chart aove and I wish I was going off the 4.88's but am off from that. thanks for all the help race.

huh?

BigMike · « **Reply #13 on:** Apr 22, 2007, 10:01:16 PM »

Good choice man, I hope everything works out.

BTW, how long ago did we bring that trans out? I'm willing to wager that Marlin will still remember the street you live on.

jimbo74 · « **Reply #14 on:** Apr 22, 2007, 10:07:32 PM »

i say go with the 529s as well..... not jumping on a bandwagon with mike, but in looking @ the responses to this thread, everyone says 488s... but then they all live relatively close to sea level.....

BigMike · « **Reply #15 on:** Apr 22, 2007, 10:55:13 PM »

Quote from: jimbo74 on Apr 22, 2007, 10:07:32 PM

not jumping on a bandwagon with mike

We've got refreshments on board

brainlessfool · « **Reply #16 on:** Apr 23, 2007, 05:34:37 AM »

Quote from: BigMike on Apr 22, 2007, 10:55:13 PM

We've got refreshments on board

I'm there!

Quote from: jimbo74 on Apr 22, 2007, 10:07:32 PM

not jumping on a bandwagon with mike, but in looking @ the responses to this thread, everyone says 488s... but then they all live relatively close to sea level.....

Good point.

Wermz84 · « **Reply #17 on:** Apr 23, 2007, 08:53:46 AM »

Quote from: BigMike on Apr 22, 2007, 10:55:13 PM

We've got refreshments on board

Sweet count me in. I'll bring Snacks..

whos bringin the 5:29's?

TRHS1980 · « **Reply #18 on:** Apr 24, 2007, 10:34:27 AM »

Thanks for clearing that up

alwayzbroken · « **Reply #19 on:** Apr 24, 2007, 10:37:17 AM »

Holy balls man! My head is gonna detonate unless you add punctuation to the next thing you post.

race · « **Reply #20 on:** Apr 24, 2007, 09:32:05 PM »

Sorry I'm a mechanic not a poet! this is why I don't post! also I found auto mechanics and machine shop much more interesting than english class

:THANKS AGAIN AND GOOD BYE!

I removed my other post's as not to confuse anyone any further SORRY TO HAVE BOTHERED YOU!

Yota Up · « **Reply #21 on:** Apr 25, 2007, 11:07:46 AM »

We don't need more poets - we want mechanics.

I don't care how illiterate or grammatically incorrect a person is - personally, I can read your writing. I like it. Who cares if some people don't or can't? There will always be some that don't want to listen anyway.

So don't go away. Have a beer, relax, and keep posting.

We don't need no stinkin grammer! Tell us about the huntin!

race [OP]

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