Firewall Flex 67-69 F Body
 

Has anyone experienced firewall flex in a stick car and if so what is the recommended repair?

Re: Firewall Flex 67-67 F Body
 

Moroso used to make a brace that bolted to the two bottom master cylinder bolts and extended to the subframe to help prevent firewall flex for the clutch pedal pivot. It's an old part (like me. Only I'm an old fart!), from the 70s. Is that what you are talking about?

Re: Firewall Flex 67-67 F Body
 

Yes. I just emailed Moroso to see if they have anything like that. Thanks for the info. If they don't have anything I will have to fabricate it myself.

Re: Firewall Flex 67-67 F Body
 

I've seen Chevy II racers make a brace that runs from the master cylinder to the top of the shock tower. Theres quite a bit of movement on those cars,,up to 1/2 an inch with the old heavy clutches we used to run back in the '70s,,,maybe its better with the modern clutches.
Danny Durham

Re: Firewall Flex 67-67 F Body
 

jimmy parker has a great working brace for this application pm him here

Re: Firewall Flex 67-67 F Body
 

My guess is you have old 2800-3200 lbs. pressure plate? If so take it out get a good clutch setup that will fix your firewall flex and save every driveline piece in the car.
Mike Taylor 3601