[Rich Lambert]

Thanks for the replies!

L.J. - I was checking the MSD web site last night and they have a troubleshooting guide. I'll work on that tonight.

Dennis - Fuel blockage is what I'm thinking too. I've got a Mahle filter on each carb and they don't appear to have any crap in them. When the car is running, both filters look like they're flowing gas and the level in the filter didn't drop any when the car started running poorly. It's done this through 2 tank fulls, so I think bad gas would be an amazing coincidence.

Grady - My tach is always acting up...even with the MSD tach adapter installed. I was able to briefly replicate the problem in the driveway last night and while the car was popping and backfiring, the fuel pressure was rock steady 3.5. I'll check the line of filters tonight. I've never looked at the one in the pump before. Maybe I'll luck out and not have to drain a full tank of gas. I'll do the voltage check too - good idea...my MSD box 12V is wired into the switched fuel pump circuit. You're right about needing to fix this permanently.

berettafan - yes, that would suck to run the pump dry and thanks, I had to document that.

911quest - that would explain why it always happens for the same length of time...hmmm

T77911S - I've got an MSD Blaster 2 on there now...and it's mounted upside down. I'll try flipping it.

Lots of stuff to check tonight...thanks guys.