65 Panel RE ratio??? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

dgas · 01-02-2012, 12:24 PM

Understanding that RE ratio's could be optional in the 60's, But what could I expect to find in a 65 C10 panel w 6cyl/4spd granny low truck for a RE ratio? My thought is that I want to raise the ratio when I go to a 5 bolt hub RE. From my memory those old granny 4 speed trucks were geared pretty low .

krazy_texan · 01-02-2012, 01:36 PM

to my understanding if it is a factory inline 6 and a 4spd good chances are that you prob have 4.10 gears even in a half ton

**Captainfab** · 01-03-2012, 01:36 AM

I agree that there is a good possibility that your rear end will have 4.10 gears. However, I have found 3.73 gears to be the most common in my dealings with these trucks over the past 35+ years.

Also, the SM420 4 speed truck trans has a 1:1 4th gear just as any other 4 speed trans. In normal everyday driving, 1st gear is not used.....you start out in 2nd gear.

dgas · 01-03-2012, 10:32 AM

I thought it would be in that area. I've always started off in second w those 4 speeds . My idea is to run a RE w a ratio in the 3.00 to 3.50 range. I think that would make the truck ultimately a much better driver w a compromise of Perf. and milage. I thought about a 2:9?'s RE but I am not sure how that granny low would handle that. But then I do not plan to actually HAUL anything except AS- w a fairly stout SBC and moving my pontoon around the bend to the landing twice a year. (in + out of the water, spring and fall), BUT that said a 3:73 RE would be a nice set for a 700R4 trans. HMMM options options ;D thanks

01-02-2012, 12:24 PM	#1
dgas Registered User Join Date: May 2009 Location: Foley MN Posts: 108	65 Panel RE ratio??? Understanding that RE ratio's could be optional in the 60's, But what could I expect to find in a 65 C10 panel w 6cyl/4spd granny low truck for a RE ratio? My thought is that I want to raise the ratio when I go to a 5 bolt hub RE. From my memory those old granny 4 speed trucks were geared pretty low . __________________ 1966 Chev LWB C20 PU http://s41.photobucket.com/albums/e2...ev%20C20%20PU/

01-02-2012, 01:36 PM	#2
krazy_texan Registered User Join Date: Oct 2002 Location: West Des Moines, Ia Posts: 3,233	Re: 65 Panel RE ratio??? to my understanding if it is a factory inline 6 and a 4spd good chances are that you prob have 4.10 gears even in a half ton __________________ Krazy Texan My Trucks are made with Wrenches not Chop Sticks 1967 GMC 3/4 ton "Johnny Cash" 1990 v1500 suburban 1967 Ford f100 Swb 4x4 "green bean" GOD BLESS JESUS, JOHN WAYNE, AND THE ALAMO

01-03-2012, 01:36 AM	#3
Captainfab 60-66 Nut Join Date: Mar 2007 Location: Coeur d'Alene, Idaho Posts: 23,248	Re: 65 Panel RE ratio??? I agree that there is a good possibility that your rear end will have 4.10 gears. However, I have found 3.73 gears to be the most common in my dealings with these trucks over the past 35+ years. Also, the SM420 4 speed truck trans has a 1:1 4th gear just as any other 4 speed trans. In normal everyday driving, 1st gear is not used.....you start out in 2nd gear. __________________ Power Steering Box Adapter Plates For Sale HERE Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE Hydroboost Mounting Plates HERE

01-03-2012, 10:32 AM	#4
dgas Registered User Join Date: May 2009 Location: Foley MN Posts: 108	Re: 65 Panel RE ratio??? I thought it would be in that area. I've always started off in second w those 4 speeds . My idea is to run a RE w a ratio in the 3.00 to 3.50 range. I think that would make the truck ultimately a much better driver w a compromise of Perf. and milage. I thought about a 2:9?'s RE but I am not sure how that granny low would handle that. But then I do not plan to actually HAUL anything except AS- w a fairly stout SBC and moving my pontoon around the bend to the landing twice a year. (in + out of the water, spring and fall), BUT that said a 3:73 RE would be a nice set for a 700R4 trans. HMMM options options ;D thanks __________________ 1966 Chev LWB C20 PU http://s41.photobucket.com/albums/e2...ev%20C20%20PU/ Last edited by dgas; 01-03-2012 at 10:38 AM.



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