14 bolt ?

[jk5blazer]

What is the standard ratio for a 14 bolt. I got one free out of an 80's K30 van
2wd. Unless I counted wrong the gear ratio in this one is 3.21 or so. That just dosen't sound right. Thanks for any responces.

 

[79Stomper]

My van width out of a G20 ended up being 3:73 ratio. Good luck on cutting those old spring perches off those things are tough, or atleast mine was. Would recomend a plasm cutter if available.

 

[jk5blazer]

I was unaware that I had to cut the spring perches off. Cool something else to look forward to. Thanks for the info

 

[dyeager535]

No "standard" ratio for GM axles...there is a standard axle based on the particular application, but typically engine and or transmission differences will have different "standard" axle ratios. Sometimes federal vs. california emissions was a deciding factor as well. Very few GM vehicles had no options in drivetrain up until the newer stuff.

Only things I can think of that had no optional stuff would be something "special" like an 80's Monte SS or 442...the engine, transmission, axles, and axle ratio were identical on every one produced for that year. Again emissions/destination might change some things with the carb or emissions components, but not therest of the drivetrain stuff.

 

[AkMudr]

What #"s were stamped on the ring gar? That will also tell you the ratio.

 

[sweetk30]

da van is wider and need to move all brackets and perches to fit a truck. but that meens no spacers to make tires same frt to rear. thats why we use them.

 

[79Stomper]

I was unaware that I had to cut the spring perches off. Cool something else to look forward to. Thanks for the info

Van widths are roughly 3" wider than a standard truck rear. I searched for a van width due to this and I wouldn't have to buy a set of spacers to get same track width front and rear.

 

[AkMudr]

Bah BAM!

Spacing
[font=Arial, Helvetica, sans-serif]1-tons feature 40.5" perch spacing - whether C&C or pickup, whether SRW or DRW. 3/4-ton is 42.5" perch spacing. [/font]

Width's
[font=Arial, Helvetica, sans-serif]SRW 67.5" WMS-WMS

DRW 72" WMS-WMS

C&C 63.5" WMS-WMS

VAN 70" WMS-WMS

[/font][font=Arial, Helvetica, sans-serif][/font]

 

[benchseat4speed]

Correct me If I'm wrong, but I think the only gear ratios you could get in an 80's 14 bolt SF were 3.08, 3.42, 3.73, and 4.10. Maybe 4.56's???

 

[AkMudr]

Wouldn't a 1ton 2wd van have a 14BFF? Eventhough its 2wd it still has a 1ton chassis. Ive seen a bunch of 1ton 2wd vans her ein VA as well as trucks which had 14bFF's

 

[79Stomper]

Yep, most of them I have seen have had FF. I got a FF out of a G20 so I am sure the 1 ton would have them as well.

 

[jk5blazer]

Yeah it is a full 14 bolt ff. The ring gear count was 45 and the pinion was 14. It just didnt sound right. Thanks.