You could add one of these if you think your fuel is getting that hot.

http://www.proheader.com/image/pt151.gif

I think running a dead head of fuel pressure is not a good way for a fuel system to work IMO.

I ran a dead head fuel set-up on my Camaro for a bit, because I was too lazy to install a return line.

Forgot, did you advance the cam timing or retard, or the same cam timing since the last build?

MBHD
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12 port SDS EFI