360 Intakes

This is my take on why 1 4bbl could be faster than a 6 pack.

Could be 1 of 2 reasons, 1st those 6 packs might be harder to tune. You need to get the jetting just right and the right springs on the secondary carbs.

And 2nd, that car was mostly stock, meaning the ignition system had to be stock or close to it. If it would had have an MSD racing spark box like a 7al or even an 8 box--the 6 boxes really are not that much better than stock-the motor might have really woke up.

I found that out the hard way, ran a MSD 6 box for years with my dp 750, was happy with it, only time it had a bog at all was from a dead stop and I floored it super fast, if I took off and not punch it as fast as I could it seemed fine.

Well that 6 box had no rev limiter, the 6a was like almost $200, I am thinking gee, for just over $300 I could get a 7al-they are no longer made new-most said I was wasting my $$ but MSD said with the right coil it last on the street just fine, so I got it. Guess what, no bog no matter how fast I punched it. Motor pulled even better at all speeds. Spark plugs stay super clean-they do wear out faster, the metal fades away and the gap opens after just 6 months of use, not much but more than the 6.

Big deal, now I just buy new NGK racing plugs each year, I never run a stock or even a MSD 6 box again unless I had too, smog laws.