coil springs

[cptam1]

I have a 351M/400 engine in my stang. I need heavy duty springs and shocks where do i get them. No one has HEAVY DUTY.

 

[1Bad67]

You can get 720 lb springs from Maier Racing or 750 lb Grab-a-Tracs from Mustangs Plus. They are pretty stiff. 620's would be fine with any good shock Koni, Spax etc.

 

[LMan]

How did you end up with an oddball like a 351M/400 in your Mustang? *yick*

 

[mustangdave]

NPD lists all kinds of HD springs; they were usually used on big block, a/c equipped cars with sport handling package.

 

[ForceFed70]

You don't need anything all that heavy duty.

Have you looked into how much the 351M weighs compared to a 351C or a 428?

 

[65shlbycln]

I had grabatraks, and they worked well. Try those out.

 

[cptam1]

The person who owned the car gave it to his son, who F^&%* it all up. pulled the engine and took an engine and tranny out of a TRUCK to race it. Theorizing that if the engine in a heavy truck can go fast. In a light mustang light speed is attainable.

 

[John Z]

The person who owned the car gave it to his son, who F^&%* it all up. pulled the engine and took an engine and tranny out of a TRUCK to race it. Theorizing that if the engine in a heavy truck can go fast. In a light mustang light speed is attainable.

Some interesting info about the 351M
http://www.projectbronco.com/History/history_of_the_ford_351m.htm

By the way, the 351M and 351C weigh about 550 lbs. The 302 is about 470, 351 W about 510, and the big blocks are in the 640 - 680 range. Springs designed for any 351 would be ok.