Standard spring rate for a Mach 1

[Ray 10]

Can anyone tell me the standard spring rate for a 69 Mach 1 with a 390 engine, auto and air con. I did a search but couldn't find anything...Thanks

[Ray 10]

Can anyone tell me the standard spring rate for a 69 Mach 1 with a 390 engine, auto and air con. I did a search but couldn't find anything...Thanks

[LoneWolf2U 136]

If IRCC the rate is 800Lbs for the BB Ford.

[LoneWolf2U 136]

If IRCC the rate is 800Lbs for the BB Ford.

[Ray 10]

Sorry, Can you tell me what IRCC stands for?

[Ray 10]

Sorry, Can you tell me what IRCC stands for?

[BigDuke6 17]

Sorry, Can you tell me what IRCC stands for?

 

If IRCC = If I recall correctly

[BigDuke6 17]

Sorry, Can you tell me what IRCC stands for?

 

If IRCC = If I recall correctly

[BuckeyeDemon 211]

If IRCC the rate is 800Lbs for the BB Ford.

 

seems a bit high.

 

the standard front coil spring for a 69 351w car was around 282 lbs/in.

 

the HD front coil spring for my 69 351w is around 428 lbs/in.

[Max Power 74]

It's IIRC, by the way....

 

The highest aftermarkets I believe are 620lbs. I think the factory BB springs are in the 400s.

 

800+ is off the charts.

[LoneWolf2U 136]

This Mach1 has the 800# performance springs from MustangDepot with the Arning drop to the upper A arms.

They list the spring rates form 700-1000# with a 1 in drop from stock for BB Fords.

 

I try a pair of those 620's and the front spoiler was 3/4 in off the ground.:thumbdown:

And the engine is a 351C, So a BB would have the nose dragging the pavement.

[BuckeyeDemon 211]

This Mach1 has the 800# performance springs from MustangDepot with the Arning drop to the upper A arms.

They list the spring rates form 700-1000# with a 1 in drop from stock for BB Fords.

 

I try a pair of those 620's and the front spoiler was 3/4 in off the ground.:thumbdown:

And the engine is a 351C, So a BB would have the nose dragging the pavement.

 

they list those as race springs. i would be shocked if Ford installed an 800 lb/in spring in a BB mach 1.

[Max Power 74]

Big blocks only weigh about 100lbs more than a cleveland. The nose wouldn't be on the ground.

 

The factory BB springs had a lower rating than the 620s you see commonly sold.

 

http://www.fordmuscleforums.com/all-ford-techboard/429688-stock-spring-rates-mustang.html

 

http://forums.vintage-mustang.com/vintage-mustang-forum/610491-69-big-block-front-spring-rate.html