im going to put a stock 460 with c6 out of a 1985 ford f-350 into my 36 pick up. i know i want to run 2.76's or 3.01's in the rear end. thought about 4.11's but as a daily driver this would kill. what i need to know is if a newer crown vic rear end will be able to hold up to this engine? i cant afford a 9" so im trying to explore other options. also disk brakes would be nice. anyone know of any other options? or if this will work well?
Crown Vic will be too wide. An Explorer rear will be about the right width, but measure what you need. With that big 460 and auto trans, you need a tall gear, at least 3.00 or taller, utilize the low end torque. For best mileage and nicer driving, keep the rpms lower. Most Exploder rearends will be 3.73 or around that range since they were all OD trans equipped. The Crown Vic and the Exploder are both 8.8, which is strong enough to hold up toy our engine.
thanks. now this may sound dumb. but when someone says taller gears they would mean like 4.11 or like 2.76? it has always confused me.
Taller gear is lower number. Deep gear is high number. 2.76-3.08:1 is a good place for you to be with that motor.
ok thank ya guys. that will help alot with what i need to go find. being on a time crunch for viva and low cash flow i need to figure everything out as soon as possible haha. thanks fer yer help.
There are on-line calculators to tell you what RPM's you will be turning at various speeds if you know your rear tire size and gear. Of course you can subs***ute different values to see their effect. The lowest rpm does not always result in the most economic engine operation however. This one is Randy's Ring and Pinion http://www.ringpinion.com/Calc_RPM.aspx
Good advice! With my Comp cam, I discovered 3.55's worked better than the 3.08's I had as far as mileage went (and it sure accelerated better).
X2 on the Explorer rear end. 96 and up have disk brakes and they're cheap too. Like everyone else has said though, Explorers are typically geared low.
but if it is an 8.8 in the explorer even if it is geared low the internals seem to be easy to swap from what i have seen online
Some people think that rear end setup is majic and tohers don't feel that way about them. I think it is a pretty easy thing but I was never smart enough to know that I couldn't do it. Looks like tyhe ranger is the correct width for ya and a gear swap will change the deep gear problem. Sounds like your in there like swim wear.
If you have any data that indicates where the 460 torque curve is at you can play with a calculator to determine a likely ratio to use. I like this one: http://ctny.audiworld.com/mark/s4/gears/gear_calc.html .
Even with decent torque, the rear end wont be strained as your truck is much lighter than the f-350 that it came out of.
If you end up with an 8.8 Ford and need to change gears, be sure and buy Ford gears. They are the cheapest right now $150, through most Mustang and Ford speed equipment sites, but the best advantage is the backlash and tooth pattern usually come back without doing any shim changing. Be sure to re use the shim behind the pinion gear bearing. It is easy to overlook and leave on the old pinion.
Where's Northridge? I've got a 9" that I just rebuilt that I am now not going to use out of a '70 Mustang. Has 3.00's.
ok so i may have found a truck to use a rear end out of. we have a 1990 isuzu pick up in here and the width is exactly what i need for my truck and it appears to have a ford 9"...can anyone confirm if it is a 9" or if not if it is strong enough for the 460 c6 combo....thanks!
Yeah, not likely...but it might be okay to use, at least until you get enough tire out back to get it to hook up Why do it twice? .
Fastest way to tell if your looking at a 9 inch Ford rear - Lowest two stud nut's (below the pinion) holding the carrier in, can only be removed with a hand wrench or crow's foot style socket. Isuzu rear axle, when is the last time you saw 460CI in an Isuzu ? Torque loads and stresses are determined differently, not a smart move to use Isuzu unless you use Isuzu NPR (cab over cab ch***is diesel) rear axle. Find an 8", 8.8" (Mustang SVO), 9", 10 bolt, 12 bolt, 14 bolt or Dana 44 and rest ***ured you can always find parts.
It looked like a 9" all the guys in the shop agreed. And I'm not throwin a 469 in an isuzu. I'm goin to put the 460 in my 36 ford pick up. Its on 87 mazda rails. I just need a beefier rear end. The izusu came in my shop today so I messured its rear end out of curiosity. And it appeared to be a 9" just the right lenght for my set up
Agree with Tim Johnson.....the 2000 Explorer 2wd is the 8.8" , 3.55 gears (check the tag on the cover) ,with disc brakes and you can even use the factory emer brake cables ! I paid $400 for mine, in 2005. 4TTRUK
The Jalopy Journal
