The spring loaded, weighted valve between the manifold and exhaust pipe can be permanently open. That little weight/rod thingy is in line with the valve. So if its horizontal, its closed, and its heating the heck out of your intake manifold.
"I like fun" Edd
Clawed: 90GW, TFI, Streetfire, 3"lift all spring, 31"BFG ATs, working RKE, Edel2131, Holly 1850, mild cam,
05 Renegade OME 927, 947, top plate, JBA 4.5s
"Just Jeepin it real"