ST5 Front Subframes

[Rapidroy10]

Hello everyone,

I am currently building a 2003 Mustang for road racing.  I have read the rules and feel my V6 powered car will be a nice fit into the local ST5 group that is growing nicely.

I see the rules regarding the subframes is that they must be stock. My car currently has a tubular front subframe installed that I understand I may have to replace with a stock part. UNLESS - Has anyone ever been allowed to use a tubular subframe that mirrors the stock suspension mounting locations and only provides more clearance for the oil pan and exhaust headers?

Thank you for your input.

 

RR

 

[BKO 5]

Im gonna go out on a limb here and say that 99% of the afttermarket or one off custom tubular subframes would have to attach to the all of the stock mounting points in order to be safe and structuraly sound. In other words mirror the the stock frame.

With that said I was in the same boat, I swapped gear boxes and using a tubular subframe gave the clearance I needed so I went with that.

So that would automatically put you in TT3 if I remember correctly so you might want to think about putting back the stock unit unless you can make more power.

[Greg G.]

On 12/11/2018 at 10:18 AM, Rapidroy10 said:

Hello everyone,

I am currently building a 2003 Mustang for road racing.  I have read the rules and feel my V6 powered car will be a nice fit into the local ST5 group that is growing nicely.

I see the rules regarding the subframes is that they must be stock. My car currently has a tubular front subframe installed that I understand I may have to replace with a stock part. UNLESS - Has anyone ever been allowed to use a tubular subframe that mirrors the stock suspension mounting locations and only provides more clearance for the oil pan and exhaust headers?

Thank you for your input.

 

RR

 

No. The rules are clear on this for ST5.

[Rapidroy10]

That's what I figured. Thank you for the clarification. Anyone want to buy a used tubular K member?

See you at the races, cheers.

 

RR