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Discussion Starter · #1 ·
SBC 355 fresh rebuild. MSD crank tigger with 6al box blaster 3 coil. 1, 7, 2, 8 will not fire 3,5 fire fine
4,6 so so. Crank trigger set a 30 deg btdc

phased dist, rotor points at 1 cyl

Replaced coil no change, replaced wires no change

Jumper wire MSD fires ok
ALT works 12.3 volts in battery
Put new ground wire on

Nothing fixes the problem

Heat gun on header pipes

1 80 deg
3 326 deg
5 331 deg
7 119 deg
2 82 deg
4 263 deg
6 258 deg
8 107 deg
running about 1 min

Checked not a 4-7 swap
Anybody have any ideas?
 

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Is it a carb? If so I had a problem similar with what seemed like dead holes beacuse the carb had no primary jets in it and some holes took all the fuel and some took just a little bit.......Just a thought.

Travis
 

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What are the jets? you check every hole for spark? Sure sounds like a fuel problem
 
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