Anyone Ever Make A Gt40 Firewall Bump?

Randy V

Lifetime Supporter
That’s a pretty intrusive bump. Some people get by without any bump, some with just a small one. I have seen at least one that used an Aluminum Pie Tin that was cut down.
There are various water pumps and pulley arrangements that are shorter. Look through some of the RCR builds to see how people addressed them.
I had opted for a remote water pump and no bump on my build.


Lifetime Supporter
That looks similar to the intrusion a Cleveland makes into a Pantera cabin, I have spare engine cover somewhere and can measure dimensions to see if it would make a good starting point. You'd need some flat infill panels to each side as it's almost square as I recall.
My CAV had a decent bump out to accommodate the WP pulley. Probably something like 1.0-1.5 inches of additional clearance.

The bump wasn't a problem with the seats as there was sufficient space between the seats.