[racerdave]

are the .359 springs the first hd option, or are they the standard springs?

 

[racerdave]

I am not sure what the first HD option is. I changed from stock springs to 7043079-067 (SPRING, TORSION, .359S, 12.5#, BLACK, LH) and 7043080-067 (SPRING, TORSION, .359S, 12.5#, BLACK, RH). That is currently what is on the sled that gives me the 4 1/4" sag. Are there two different kinds of .359 springs?

From how I read the parts fich, the 359 is the heaviest spring? The tail end that the block adjusts from could have different angles and could also come into play for stiffness.

 

[racerdave]

how much?vvThey fit the Indy rear arm?

 

[racerdave]

2006 Fusion use's same springs

 

[racerdave]

Just ordered the .359's and a IQR chain roller/tensioner from Babbits.

 

[racerdave]

Wrong thread

 

[racerdave]

So what .405 part numbers left and right fit the Indy rear skid properly

 

[racerdave]

delete

 

[racerdave]

You have to remember as the spring works, the coils close tighter. Will yours bind now on that bigger spacer as the spring is compressed? If they bind, they will limit travel, locking up the skid.