Top End Miss

Hummmmm....gear change alone would not make it pop out the exhaust if thats the case.

Hummmmm
Fuel system good..
Ignition system good..
Valves good..we think..
Only thing I can think of you could have messed up back there while changing the diff. is
Yu pinched off the fuel line enough to hinder it...Or yu pinched off the exhaust...
Other than that, I just go blank.... Unless a grounding or a power issue accrued?

Boy what a stumpier!!!!!!

valves are good as i stuck a valve a couple of months before this... had to replace the exh valves and do all bronze guides... so the head is set...

exhaust is two peice headers, dual 2.5" collectors, dual 2.5" into custom y pipe, 3" out into super 44... at the track just run dual 2.5" dia/12" long extentions

i'll look over the fuel line but i was using a lift so not alot of banging around was done...

i already cleaned and di-electric greased the bulkhead back in 09 when i had my fire lol... and added a 10ga ground from the block to the firewall... also steel motor mount...