Hey everyone,

I'm swapping in a Magnum F to replace my 700R4. Where do I cut/drill on the firewall for the clutch linkages? I have been looking through the posts here and haven't seen any good photos with diagrams like there are for the fuel pump trap door. Any help is appreciated.

Thanks!

 

https://www.hawksmotorsports.com/198...ate-3rdgenguy/
I have one on the way. Looks pretty easy, honestly.

 

Somebody posted a template for it once. No idea how good it is. Try searching for "clutch template" and variations on such things.

 

Oh, I'm going to get one of those.

 

Thanks everyone.

 

https://www.ebay.com/itm/17693973260...Bk9SR7Sg1YG7ZQ
He is on the forums. Worked great for me.

 

I will take another look, thanks Sofa.

 

I do believe the "cut out" is already stamped in the sheet metal firewall. The problem was no reinforcement.. That piece is defenatley
needed to keep from bending the fire wall.

 

I used the template from the board member who sells them on eBay. It worked perfect. Everything lined up well.

 

I used the "arms" on the clutch pedal linkage to mark those holes then just made a quick cardboard cutout the shape of the cylinder flange (which shares those holes). Easy peasy. Might eventually add one of those plates, but it's been years and hasn't cracked yet.

 

That's what I did in the dark ages before templates were offered. I bought one of the reinforcement plates from our member here but nothing lined up, since I just guessed at it. Can't win them all.

 

My 89 was stamped. ....I'm getting ready to swap my 86, though I haven't checked for the stamp yet. That being said, I do plan to get that reinforcement. I've seen him discuss it, but can't remember his name. Wildcard, you remember who it was? Mclovin maybe?

 

I don't know his user name here but this is his ebay listing.


https://www.ebay.com/itm/17658193479...sAAOSwdt1mhymA

 

For what it’s worth there is also this one:

https://www.ebay.com/itm/31449054288...is&media=COPYp

 

And yes, mods, I know eBay is taboo around here but there’s literally no other option in this case.

 

https://www.thirdgen.org/forums/tran...lutch-cut.html

 

For what it’s worth to, the firewall on my ‘83 doesn’t flex when I press the clutch. Now if I STOMP the brake pedal I can make it move a little. I plan to pickup one of those plates just to have so that when I feel like standing on my head I can install it 🤣

I wonder how much of it can be attributed to people not having their seats adjusted correctly? (Or maybe due to body shape/leg length just can’t do so?)

For example, mine is set such that if I fully extend my leg the clutch is all the way in right at the end of its travel.

I wonder if folks have their seats scooted up such that if they press all the way they’re actually pushing the pedal past its range of travel and causing repeated flexing and eventual cracking?

 

this is interesting. My 82 had such a soft firewall when compared to later cars. Obviously w the mechanical clutch it wasn't an issue but when I converted it to hydros I felt there wasn't enough rigidity to last. There was also an extra body plug 3-4 inches below the spot where the hydros mounted that further decreased rigidity. I added an 1/8 piece of steel and used the supports from the pedal mount to the hydros. I also used the master cyl support.

 

Thanks for the links guys.