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Author Topic:   HOORAY! IT'S SPRINGTIME!!
horseballz
Gearhead

Posts: 287
From: LasVegas,NV
Registered: Dec 99

posted 01-11-2004 12:09 PM     Click Here to See the Profile for horseballz   Click Here to Email horseballz     Edit/Delete Message   Reply w/Quote
Howdy Folks,
I'll bet that most of you thought I was gonna cheer about sunny days and nice weather, well I fooled ya, this post is about SPRINGS, front and rear and it'll probably be a bit long, so grab a cup of coffee or a cold one (depending on the time of day) and see if you can help me out. It's time for me to order springs for m y 68 Coupe. I'm currently in the process of a complete front suspension rebuild including the 1 inch Shelby drop.

MY GOALS:

  1. Fit the biggest meats (tires) on the widest and most deep dish 15 inch rims, the same size at all four corners without rubbing.
  2. Fairly firm handling and still have a nice ride as I want this to be the ultimate cross country highway cruiser carrying two full sized adults and a small light trailer and also as an around town daily driver. I don't want it to ride like a truck!
  3. A good profile and stance, I really love the stance of Todd's (V8Thumper) GT Coupe, although I suspect that his car is sprung a bit stiff for a comfortable ride.
  4. Longevity! I want springs that won't sag in a couple of years. (Maybe Fiberglass for the rear?)
  5. Little or no racing (well maybe just one or two trips to the strip just for reference purposes )
  6. I'm looking for that sometimes elusive "middle ground" of "The Best Of Both (ALL) Worlds". Not too stiff and not too mushy!

Any and all comments will be appreciated.
TIA
Gene (horseballz)

P.S. Does anyone here have or could tell me where to get the proper template for the Shelby drop on a 68?

------------------
'68 coupe
289/3speed out getting ready for paint and new 5.0/T5
'85 F150 Beater
300/Overdrive Stick
Pre-dented&scratched
'02 Ranger 4x4 Edge
'02 Miata

[This message has been edited by horseballz (edited 01-11-2004).]

[This message has been edited by horseballz (edited 01-11-2004).]

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V8 Thumper
Gearhead

Posts: 4376
From: Arizona
Registered: Dec 2001

posted 01-11-2004 12:48 PM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
As far as maximum tire size, I'll need to let the '67-'68 guys give you exact backspacings & aspects as those cars will accomodate more rubber than the '65-'66 cars.


From what I'm told, 5 leaf spring rears are rough. Mine are only 4 leaf, although they were once under a car called Moneymaker and they've certainly got more rate than the 40 year old springs that I replaced them with. My front coils are STOCK replacement springs! Moog p/n 8088 with 1/3 coil cut off as it did sit rather high in front. My front end is light however, lots of aluminum. The '680#' springs I understand are quite rough, better suited for big block cars I imagine.

Polyurethane bushings will take any give out of the suspension components and stiffen up things significantly. Poly bushings + stock rate new springs + good shocks = sporty. Poly bushings + stiff springs + stiff shocks = loose teeth
I don't use any poly bushings, just the OEM neoprene stuff. My car isn't a corner cutter, although it does handle suprisingly well. I'm more interested in 60' times

LOTS of choices out there, Mustangs Plus has tons of suspension stuff. That'd be a great place to start looking and comparing

Thanks for the compliemnt

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

[This message has been edited by V8 Thumper (edited 01-11-2004).]

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Fastymz
Moderator

Posts: 18590
From: Reno Nv USA MEM#1240
Registered: Apr 2001

posted 01-11-2004 05:48 PM     Click Here to See the Profile for Fastymz   Click Here to Email Fastymz     Edit/Delete Message   Reply w/Quote
This is the best I've found for the,"template for the Shelby drop on a 68?"


http://www.thecarsource.com/shelby/restore/lowering.html

------------------
SCOOP

"It is the fight itself that keeps you young"

2.26 60'S
14.9 @ 90.86MPH

65 coupe,351w,C4,Big Boss 429 hood scoop,8" 3.40 TracLoc.

My Pics

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Tom G
Gearhead

Posts: 573
From: Bethlehem, Pa USA
Registered: Nov 2001

posted 01-12-2004 09:44 PM     Click Here to See the Profile for Tom G   Click Here to Email Tom G     Edit/Delete Message   Reply w/Quote
quote:
Originally posted by Fastymz:
This is the best I've found for the,"template for the Shelby drop on a 68?"


http://www.thecarsource.com/shelby/restore/lowering.html
That looks like the template in the catalog!
Tony Branda performance has a template in their catalog.
Check this site for a template maybe?http://www.cobranda.com/


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67 Mustang F/B 302 GT-40X FMS Crate engine 5 spd cable clutch 13.39 on 205/70/14 BFG @104 mph Flowmasters X Pipe 4.11 9". Body shop NOW! 03 Focus ZX3 BORLA exhaust Wings West spoiler (Arrest ME RED)

[This message has been edited by Tom G (edited 01-12-2004).]

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horseballz
Gearhead

Posts: 287
From: LasVegas,NV
Registered: Dec 99

posted 01-13-2004 02:42 AM     Click Here to See the Profile for horseballz   Click Here to Email horseballz     Edit/Delete Message   Reply w/Quote
Alex & Tom,
I look out my back door and see that white stuff (snow, I think it's called) on the mountain tops about 15 miles away while working on my car at 65 sunny degrees ain't it pretty? But seriously, I understand your pain and plight, as I shoveled that SH*T (slop) for 43 years of my life in Syracuse, NY, also known as "The Salt City". You can guess what they used to control ice on the roads and what it did to the poor cars That's one of the reasons I moved to Las Vegas NO RUST! We do get daytime highs as low as the mid 30's. Alex, I've heard that you use fiberglass rear springs on MONEYMAKER, and that they are available in any rate requested, and that they help to reduce wrap-up and wheel-hop. Do they hold their strength long term and do the lighter rates provide a reasonable ride? Thanks to all for the info and links to templates. Todd, by the way, aren't your front springs stock GT units, and doesn't cutting the spring make it stiffer?
Thanks,
Gene

P.S. And yes, I am a big tease, just ask my better half, Suzy


[This message has been edited by horseballz (edited 01-13-2004).]

[This message has been edited by horseballz (edited 01-13-2004).]

[This message has been edited by horseballz (edited 01-13-2004).]

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V8 Thumper
Gearhead

Posts: 4376
From: Arizona
Registered: Dec 2001

posted 01-13-2004 07:55 AM     Click Here to See the Profile for V8 Thumper   Click Here to Email V8 Thumper     Edit/Delete Message   Reply w/Quote
Yes, cutting a coil spring (effectively reducing the overall number of active coils) will increase its rate. That's why I bought stock V8 coils and trimmed them for the ride height I wanted. The ride quality is noticable but by no means violent. In fact, if I were to run a less aggressive shock package (KYB gas-a-just now) it'd ride even better. The Shelby guys I talk to at local shows say that Konis beat the daylights out of you
The spring/shock combination will determine the ride quality

Note on cutting coils: IT DOSEN'T TAKE MUCH! Seriously, I practiced on an old set and cut off 1/2 coil to see what would happen... it slammed the nose loooooooow
I barely cut off 1/3 off the new coils, and it's perfect. I used an abrasive cut-off tool, DO NOT use a cutting torch as the heat will alter the springs' rate.

New springs will 'settle' some. If you have the means, you can compress the springs to coil bind and leave them compressed for a week prior to installation. THIS IS POTENTIALY DANGEROUS as the stored energy in those things can cause serious dammage if released suddenly. It's not like you can just stack some old phone books and barbell weights on top of them and let them sit in a corner of the garage

------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9"

All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html

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indyphil
Gearhead

Posts: 2354
From: Senoia, G.A. USA
Registered: Jul 2002

posted 01-13-2004 09:44 AM     Click Here to See the Profile for indyphil   Click Here to Email indyphil     Edit/Delete Message   Reply w/Quote
Gene,
I had exactly the same goals as you.
Biggest tires on all 4 corners the same.
cool stance
same tires all round
good ride
good handling
occasional strip action
Middle ground

I have 4-1/2 leafs
550 coils up front with a little spacer
gas shocks
shelby drop

My website documents the front suspension changes (including the shelby drop)

And the car now handles GREAT. Its probably a little on the oversteer side (when its wet out), but I dont have the final sway bar package yet. It is firm. Probably at the upper limits for comfort.

The tires (which are on 16 inch rims) are 225 wide and thats about the widest you can fit comfortably. The rims are 16x8 with 4.5 inch backspacing. You could fit more on the back but then they would need more backspacing and wouldnt be the same as the front. a 15x7 rim with 225x60R15 tires should work so long as you have at least 4 inches of backspacing. Ask around though because I have not actually tried that combination.

New leaf springs will take a set over a year or two but you dont need to get glass springs. steel ones should last a good long while. Easily 15 years.

------------------
'68 coupe 289 C code
66 heads, edel 600cfm carb, performer intake, dual exhaust http://www.geocities.com/ottouk_77/68mustang.htm

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