[Bill Wells]

snak iyz...not sure how different your 392 stroker is to a ford racing svo 392 stroker, which i have.

the engine specs for my engine said 750 carb minimum. i have a custom 'pro systems' built holley 780 on my stroker, with 73 primary's and 82 secondary jets. mechanical secondaries, no choke. msd ignition. timing is at 32 degrees at 4000 rpm, per engine hot test spec sheet. i have had it on a chassis dyno for tuning and the jets were right on for air/fuel ratio and best performance settings and timing , at 32 degrees , was the best for maximum power. every time we changed something, the numbers went backwards. the beauty of a chassis dyno, takes the guess work out of it and gives ya something more meaningful than seat of the pants guesstimates.

started out with a 1/4" heat spacer under the carb and switched to a 1" spacer which added 17 rear wheel horsepower and same torque increase.

if you have a chassis dyno nearby with a good carb guy ( unless you have that expertise) i suggest having it tuned to determine which jet sizes and what timing is optimal for your engine. forget whatever hp / trq numbers you get on the print out, just use it for directional tuning, ie, which settings / changes improves the numbers vs reversing them.

Bill