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Springs

I know its recommended to put v8 springs into a bird or cat once you swap from a v6 to the v8 but is it required? I'm about to finish my engine swap project and was curious if anyone ever just kept the v6 springs.

What new springs can I buy that will work well? I'm not looking for lowering springs or anything, just something comperable to what a v8 car would have, maybe a little bit more "handling enhance".

Suggestions?

Springs

Reply #1
It may lower it just right,I know v8 demon is selling used fronts.
Old Grey Cat to this.88 Cat, 5.0 HO, CW mounts, mass air, CI custom cam, afr165's, Tmoss worked cobra intake, BBK shorty's,off road h pipe, magnaflow ex. T-5,spec stage 2 clutch, 8.8 373 TC trac loc, che ajustables with bullits on the rear. 11" brakes up front. +

Springs

Reply #2
nope, used rears.....The right front I pulled was cracked.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Springs

Reply #3
can fox mustang springs be used in fox TBird does anyone know??

Springs

Reply #4
Fronts....yes
rears.....no

The fronts here are Moog part #8598.  Keep in mind I've taken a good amount of weight off the front end.  You may want the #8600 instead.
Rears are stock replacements made by Moog as well.
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Springs

Reply #5
i should be selling mach 1 springs and possibly struts/shocks shortly, those would be nice but they would lower it much compared to the way it sat stock.
:america: 1988 Thunderbird Sport, Former 4.6 DOHC T56 conversion project.

Rest of the country, Welcome to Massachusettes. Enjoy your stay.

 
Halfbreed... Mango Orange Y2K Mustang GT
FRPP complete 2000 Cobra engine swap, T56 n' junk...
~John~

Springs

Reply #6
if you keep the v6 springs you will notice that it is really bouncy feeling in the front. I didnt notice the car sit any lower then when the v6 was in there. but it did feel really bouncy. at least that is what it was like in my mustang.

mustang parts do interchange. the part numbers are different because the cougar sits just a little taller in the back stock. the whole suspension in my cougar now is out of a 1993 mustang and I have ford b springs for a 1996 mustang installed. it is amazing how much you can interchange.
1981 ghia t-top: sed...
1983 cougar rb22 greddy turbo 5speed.

Springs

Reply #7
Quote
mustang parts do interchange. the part numbers are different because the cougar sits just a little taller in the back stock


The spring rates and free heights are very different on the rears.  I wouldn't put the Fox Stang rears in a Cougarbird; at least not one you want to keep at stock or near stock ride height.....they have enough sag issues as it is....

Here:
http://bbb-carb.com/moog_Coil_Springs.htm

Rear Cougarbird is part #8599
Fox Stang is # 8621


Mucho Drop-o
-- 05 Mustang GT-Whipplecharged !!
--87 5.0 Trick Flow Heads & Intake - Custom Cam - Many other goodies...3100Lbs...Low12's!

Springs

Reply #8
could you get away with the mustang springs if you used the che adjustable lower control arms?

88 t-bird tc - 14.97 @ 90  IHI 18 psi + k+n filter...so far - NOW HX-35 @25psi - 12.75@112    348rwhp/395rwtq
78 F-150 - 11.61@120 on 175shot N20 - 12.55@110 on motor - 5200# race weight:hick:

Springs

Reply #9
It's very common for the front springs to break in these cars. Both of my front springs had the bottom coil broken off and I only had the V6 at that time. I put replacement V8 sport MOOG front springs(can't remember the p/n) and the car handles better than it ever did with the V6 and the old springs.
1988 Thunderbird
306 HO w/ A9P processor
AOD w/ Transgo Reprogrammer
Full Digital Dash w/ twin Cyberdyne A-pillar gauges 
245/50/16 Tires on Snowflakes
Engine swap - CA smog compliant

Springs

Reply #10
Quote from: fordguy545;245865
could you get away with the mustang springs if you used the che adjustable lower control arms?


Yes, though even with the perch jacked up 1.25" I'm still over an inch lower than stock - that's how much shorter they are.

I'm running the Mach 1 springs front and rear. The Mach 1's lowered the front about 1.5" also.
11.96 @ 118 MPH old 306 KB; 428W coming soon.

Springs

Reply #11
Is it okay to keep the v6 springs in the rear with the v8 in the car now? Is there a difference.

Springs

Reply #12
Quote from: Cougar5.0;246049
Yes, though even with the perch jacked up 1.25" I'm still over an inch lower than stock - that's how much shorter they are.

I'm running the Mach 1 springs front and rear. The Mach 1's lowered the front about 1.5" also.


is the pic in your sig the height your talking about.  If so, thats about where my drivers side is sitting now, and the pass side is a 1/2-3/4" higher with no broken springs

88 t-bird tc - 14.97 @ 90  IHI 18 psi + k+n filter...so far - NOW HX-35 @25psi - 12.75@112    348rwhp/395rwtq
78 F-150 - 11.61@120 on 175shot N20 - 12.55@110 on motor - 5200# race weight:hick:

Springs

Reply #13
V6 and V8 rear springs are the same...unless you decide to put cargo coil springs in the rear :)
1988 Thunderbird
306 HO w/ A9P processor
AOD w/ Transgo Reprogrammer
Full Digital Dash w/ twin Cyberdyne A-pillar gauges 
245/50/16 Tires on Snowflakes
Engine swap - CA smog compliant

 

Springs

Reply #14
Quote from: fordguy545;246242
is the pic in your sig the height your talking about.  If so, thats about where my drivers side is sitting now, and the pass side is a 1/2-3/4" higher with no broken springs


My car is sitting like that now - perhaps a little higher in front as it's facing downhill in the sig pic. My car sat 1/2" higher on the passenger side too so I added a 1/4" spring spacer to the drivers side which added nearly 1/2" & leveled things off nicely.
11.96 @ 118 MPH old 306 KB; 428W coming soon.