Need Opinions 64' Lark Spring Choices

Okay , I printed up the entire Moog Chevelle Catalog from a site .I've been pooring over #'s for awhile now .
Here is what I've come up with .
64' Lark w/ A/C , 300ci. Aluminum Heads/Intake .
Getting a Transplant to a 350/4 , 2004r . w A/C .
I've also read here that the 300 is 50 lbs. heavier than the 350 , I'm assuming those #'s are for the full Cast Iron 300 ????

Front Coils - 2 Tangential Ends .
OEM # 656
Installed Ht. = 11.19"
Load Rate + 1940 lbs.
Rate + 314.5 Lbs.
Way too tall for my likes
Should I get the OEM Load Rate and Trim them ?

Front Coils :
Here are a few that I've found ;
Listed by choices .
#1] # 5246
Installed Ht.+ 11.0" ( - .19" )
Load Rate - 1872 Lbs. ( - 68 Lbs .)
Spring Rate - 298 lbs . ( - 16 Lbs . )
I'm hoping this would lower front a bit , and still give me a firm ride .

#2] # 5230
Installed Ht. - 11.0"
Load Rate 1884 Lbs.
Spring Rate - 251
Too soft ??

#3] # 6312
Installed Ht. 10.75" ( - .44 " )
Load Rate 1800 ( - 140 Lbs . )
Spring Rate - 337 Lbs . ( + 23 Lbs . )
I like the Rate ; A bit stiffer but a lighter load

Rear Springs - 1 Tangential / 1 Pig Tail End
Moog OEM # 5231
Installed Ht. - 8.5"
Load Rate - 803 Lbs.
Spring Rate - 112 Lbs.

Here are my Rear choices ;

# CC 762 Variable Rate Springs
Installed Ht. -11.0 ( 2.5" Increase )
Load Rate - 960 Lbs (157 Lbs. Increase )
Spring Rate - 114 Lbs . ( +2 Lbs )
Heavier Load Rating here on these . Are these too tall with the Installed Ht , Increased Load Rate ?


# 6197 Standard Coil
Installed Ht. 8.5" ( +/- 0 )
Load Rate - 878 Lbs . ( +75 Lbs. )
Spring Rate - 138 Lbs . ( + 26 Lbs .)
Real Close to stock ,
The car is an "A$$ Dragger " with the #5231's on it now .
Any input ,analysis what ever would get me closer to the road .

Oh, also putting 225 or 235/60-15's on all 4 corners .

Thanks,
Steve

 

Spring Choices

Ttt

 

To compare springs you will need to find the installed height using the same load. Linear springs use a simple equation: Installed_Height = Free_Length - Load/Rate
So that will give you a measure of how tall the spring will be with a certain amount of weight on it.

I would stay above 300 pounds/inch for the fronts.

 

Hi Steve, Have you checked out this thread?

http://www.v8buick.com/showthread.php?t=66487

I still need to get you the picture of the grill also. I cant remmeber what springs I have in front but they are the stardard heavy duty and I am putting a 455 in it with headers and an aluminim intake. The rears are the wagon springs and may be to high but I do not have the car together yet.

 

My vote would be for 2 inch dropped coils from OPGI, and give that baby some stance! :laugh:

 

Spring Choices

Thanks for the replies . I've got the springs ordered finally .
I got Moog # 6310 for the front / 6197 for the rear .
Can't wait , all the bushings are coming too .Time to drop the chassis out .
Steve