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Author Topic:   Upgrading rear end
65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-27-2001 02:39 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
Ok. I want to upgrade my rear end to something a little more race worthy. I was thinking of putting in a Detroit Locker and 4.11 gears in to my 8 inch. The guy at the gear place said $950 for the whole job. BUT, for $300 more, he will put in a 9 inch if we bring him a housing.

Now, I will only be putting down 300hp or so to the ground. But I will have slicks and be leaving at like 4k. Is the extra weight and hp loss of the 9 worth the extra strength? Will I even need the strength?

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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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Mpcoluv
Gearhead

Posts: 928
From: Charlotte NC usa
Registered: Apr 2001

posted 08-27-2001 05:39 PM     Click Here to See the Profile for Mpcoluv   Click Here to Email Mpcoluv     Edit/Delete Message   Reply w/Quote
Am I wrong to think $1200 is too high for a installed 9" center section?
Buy a 9" housing for a '65/66 from Perogies (Perogie.com I think), use your 8" axles and brakes, get a junkyard center section nadinstall new gears and the locker.
Having said that, an 8" with a locker is pretty strong. Just don't launch with slicks and nitrous.....

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-27-2001 07:38 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Mpcoluv:
Am I wrong to think $1200 is too high for a installed 9" center section?
Buy a 9" housing for a '65/66 from Perogies (Perogie.com I think), use your 8" axles and brakes, get a junkyard center section nadinstall new gears and the locker.
Having said that, an 8" with a locker is pretty strong. Just don't launch with slicks and nitrous.....

$1200 would be to take out my 8 inch, cut the 9 inch housing to size, and put our axles, brakes, etc into a 9 inch housing with a new traction lock/locker and gears. That doesn't sound too bad too me.

What about launching an 8 inch on just slicks, no N20?


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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-27-2001 07:49 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 65_289:
What about launching an 8 inch on just slicks, no N20?

It's too risky for a $950 rear end. Consider the $300 insurance money well spent.

BUT, there are much cheaper ways to go... Have him cut down a 9" housing for your axles and brakes, and find a 4.11 center section w/trac-lock and 28 splines, from a wrecking yard! The track lock will be easier on your axles than a locker, and will bite very well at the track.
With the savings you could order a pair of 31 splined Moser axles for about $320. Then you won't have to worry about future upgrades. And 31 splined 4.11 trac-loc centers are a lot more common. We found our 28 splined 4.11 geared center from a '67 Bronco.

Good Luck in the hunt,

SteveW

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-27-2001 08:23 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by steve'66:
It's too risky for a $950 rear end. Consider the $300 insurance money well spent.

BUT, there are much cheaper ways to go... Have him cut down a 9" housing for your axles and brakes, and find a 4.11 center section w/trac-lock and 28 splines, from a wrecking yard! The track lock will be easier on your axles than a locker, and will bite very well at the track.
With the savings you could order a pair of 31 splined Moser axles for about $320. Then you won't have to worry about future upgrades. And 31 splined 4.11 trac-loc centers are a lot more common. We found our 28 splined 4.11 geared center from a '67 Bronco.

Good Luck in the hunt,

SteveW


Insurance......I never though of it like that. That is an interesting idea, about hunting the junkyards. Although from what I hear, lots of 9 inch rears have already been pilfered from junkyards.

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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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Ryan Wilke
Gearhead

Posts: 1450
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 08-28-2001 07:35 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
...I agree with SteveW, for the 'peace of mind' I'd locate a 9" rear & cut it to fit, locate a 9" center section with 4.11 gears and 31-spline traction-loc. I'd also step up to the 31-spline Moser axles (sell your current 8" axles & housing, since they're still good). THEN - you can put 9" slicks, N20, etc. to your ride without any worry about the rear...then you can start to worry about finding the next weakest link!

Good Luck! Ryan

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The '3-Pedal Attitude' Kid
in a '69 FB w/ 306 now, but
the 460+ is coming... :D

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Ryan Wilke
Gearhead

Posts: 1450
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 08-28-2001 07:58 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
....check this out, dude >>

FOR SALE: Complete, stock 9" carrier, small bearing strange lite weight spool for 31 spline axles, New Moser 5.14 Pro gears never run, New timken bearings, 28 spline pinion, Strange 1350 chromoly pinion yoke, set up and ready to drop in and run, good for up to 650 hp...$750"

go to >>>
http://members4.boardhost.com/dragparts4sale/msg/717.html

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jkilroy
Gearhead

Posts: 1703
From: Vicksburg, MS
Registered: Dec 99

posted 08-28-2001 08:28 AM     Click Here to See the Profile for jkilroy   Click Here to Email jkilroy     Edit/Delete Message   Reply w/Quote
You found a 67 Bronco in a wreaking yard?

------------------
Jay Kilroy
68' Fastback GT 390
"No such thing as a cam thats too big"

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-28-2001 10:35 AM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by jkilroy:
You found a 67 Bronco in a wreaking yard?


No it's from my friend's Bronco. He upgraded to 31 splined Currie axles and a air lockers. The same guy that donated a 11" Centerforce Dual Friction clutch that he no longer needed after installing the Motorsports 5.0 motor that came with a clutch. In fact the our old 289 engine was from his Bronco too. Maybe I should take him out for lunch. Or maybe he should buy, seeing as how I cleaned his garage out for him.

SteveW

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TomP
Gearhead

Posts: 4780
From: Delta BC Canada
Registered: Dec 99

posted 08-28-2001 07:08 PM     Click Here to See the Profile for TomP   Click Here to Email TomP     Edit/Delete Message   Reply w/Quote
a buddy found a 4.11 Equalok in a 66 Bronco at the wrecker... $150 whole drum to drum rearend.

The 8" would be wasting money, they are NOT strong, the spindly little caps will break off it with any power and hook. A 9" would be better, an 8.8 will also work. $1200 is no raving pbargain, new gears and locker would be around $500 and doing the housing you supply should be in the $100-150 range.

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-28-2001 09:23 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by TomP:
a buddy found a 4.11 Equalok in a 66 Bronco at the wrecker... $150 whole drum to drum rearend.

The 8" would be wasting money, they are NOT strong, the spindly little caps will break off it with any power and hook. A 9" would be better, an 8.8 will also work. $1200 is no raving pbargain, new gears and locker would be around $500 and doing the housing you supply should be in the $100-150 range.


I don't know..... A locker is at least $400 and I thought gears were like $180. So that's $600. Then you gotta get a 3rd member and housing, then you gotta think about labor. Since I am in college, I have no place to do any labor of this magnitude, so it would have to be done (correctly) by a pro.


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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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chips67
Gearhead

Posts: 651
From: louisville, ky, usa
Registered: Jul 2001

posted 08-28-2001 09:33 PM     Click Here to See the Profile for chips67   Click Here to Email chips67     Edit/Delete Message   Reply w/Quote
i dont know why the 8 inch gets such a bad rap. also dont know why 28 spline axles get a bad rap. have seen quick cars with 8" rears, have seen quick stick cars with 28 spline 9 inch rears. didnt know you couldnt bolt in a 9 inch into 64-66 models, must have different width than 67-68 models. $1200 is too high. just thought id stand up for the little axles. ok, sitting down now.

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67 coupe, 650dp and rpm intake on 5.0 with afr 165 heads, 4 speed, 4.11's.....best so far is [email protected] in 1/8 mile with 1.78 60ft. time.

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-28-2001 09:53 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by chips67:
have seen quick cars with 8" rears, have seen quick stick cars with 28 spline 9 inch rears. didnt know you couldnt bolt in a 9 inch into 64-66 models,

Chip,

The 9" rear that we started with was the correct width for a '65/'66 it was from a 57/58 Ford or Edsel wagon w/v-8. We twisted/bent the old 28 spline axles pretty quick. It has Moser 28 sp axles now. Still a 28 spline diff. from the '67 Bronco w/ Trac-Loc. So far so good, but still only 1.68 60'ers so far. The 8" is ok, but eventually you'll out grow it.

SteveW

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-28-2001 11:00 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
So it seems $1200 is too much. So I guess I will have to find a housing and a 3rd member w/ the right gears and diff. Geez, I"m sure that will be easy.

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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-28-2001 11:03 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by TomP:
a buddy found a 4.11 Equalok in a 66 Bronco at the wrecker... $150 whole drum to drum rearend.

What is Equalock? I assume it is like traction lock/posi/limited slip?


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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-28-2001 11:16 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 65_289:
What is Equalock? I assume it is like traction lock/posi/limited slip?

EquaLock was what Ford had before TracLock. Both are limited slip differentials. It's all in the "name"

SteveW

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 08-28-2001 11:18 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by steve'66:
EquaLock was what Ford had before TracLock. Both are limited slip differentials. It's all in the "name"

SteveW


So I assume it can be rebuilt like a T-lock?


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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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steve'66
Gearhead

Posts: 6352
From: Sonoma,CA,USA
Registered: Mar 2000

posted 08-28-2001 11:57 PM     Click Here to See the Profile for steve'66   Click Here to Email steve'66     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 65_289:
So I assume it can be rebuilt like a T-lock?

Sure can!


SteveW

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Ryan Wilke
Gearhead

Posts: 1450
From: Stanton, Michigan 49707
Registered: Oct 2000

posted 08-31-2001 09:25 AM     Click Here to See the Profile for Ryan Wilke   Click Here to Email Ryan Wilke     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by 65_289:
...So I guess I will have to find a housing and a 3rd member w/ the right gears and diff. Geez, I"m sure that will be easy.

...If you're looking for easy, you might better take up riding a bike! No one said it WOULD BE easy and who REALLY wants it easy anyway? I know a gal that's easy, but she's not my pick for a date! Remember that the JOURNEY to the top is way better than just SITTING on the top!

Ryan

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mellowyellow
Gearhead

Posts: 5649
From: So. Fl.
Registered: Aug 2000

posted 09-05-2001 08:23 PM     Click Here to See the Profile for mellowyellow     Edit/Delete Message   Reply w/Quote
The latest Mustangs Plus newsletter features 8 and 9" in various desirable ratios in both trac-loc or locker for 995 and 1075 no exhanges. These are complete center sections.

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65_289
Gearhead

Posts: 758
From:
Registered: Jul 2001

posted 09-05-2001 09:30 PM     Click Here to See the Profile for 65_289   Click Here to Email 65_289     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by mellowyellow:
The latest Mustangs Plus newsletter features 8 and 9" in various desirable ratios in both trac-loc or locker for 995 and 1075 no exhanges. These are complete center sections.

I saw that. Currie has the same thing for $895 with locker, $850 for trac-loc.

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1965 Coupe, Tremec 3550, Steeda Tri-Ax, Cable Clutch conversion, 3.25 gears, Ford XB3 longblock, x303 heads, B-Cam, 9:1 comp., Ford Racing high-torque starter, Pertronix Ignitor & Flamethrower coil, Accel 8.8mm wires, 600 cfm Edelbrock carb, Edelbrock RPM intake, K&N air, Holley electric fuel pump & AFPR, dual 2-chamber Flowmasters, KYB shocks, 5-leaf springs, Chrome Export Brace, Griffen Radiator, Comp. Eng. subs.

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Doc
Gearhead

Posts: 466
From: Redwood City, Ca. USA
Registered: Jan 2001

posted 09-05-2001 09:39 PM     Click Here to See the Profile for Doc   Click Here to Email Doc     Edit/Delete Message   Reply w/Quote
I put a Currie TSD (same as trac loc, equaloc, posi, limited slip except for a billet cover) in a big old overpowered Galaxie about 3 years ago, it's been drag raced many times and it works as good today as when I put it in.

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"Sometimes a man's gotta do what a woman would never consider."
- Red Green

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