14.45 with 12 sec combo... HELP

You have an easy 12 second combo. How do I know? I built an almost identical combo for a Duster that ran deep into the 12s.

You didn't need to get rid of the Torker 2 manifold, it's the Torker 340 that is terrible. That being said, the ProComp/Professional Products dual plane is a good choice, and made more power on the dyno than an Edelbrock RPM Airgap. By the way, it isn't made in Japan, which incidentally, is where just about everyone's TV is made these days.

I believe you would be better off with a vacuum secondary carb with such a tight converter, but with 3.91:1 gears, it should still get into the 12's without a problem.

With stock rockers, you should run your best et's shifting at 52-5400 rpm. With a 1.6 roller rocker, it will like 5800-6000.

Your ignition timing should be about 15-16 degrees initial, and 34-35 degrees total. Do not put a bunch of total timing in the motor with the KB pistons. It will detonate, and break a lot of stuff.

Work on the suspension. My customer ran 12's on regular 8" radial street tires, not drag radials. You will drive yourself mad if you keep swapping parts without sorting out what you already have.

Check out this YouTube link of a motor very close to yours.
SB 360 Mopar Dyno Test - YouTube

Also, a pic of the motor.

Mike Beachel
B³ Racing Engines
www.b3racingengines.com


in this forum, there are many different opinions ... almost everyone says that I have a combo of 13s. You say that this a combo of 12 seconds.

That is interesting, learn different things and opinions.

a question,... what is the ideal ignition timing for the KB pistons and my combo?
do you have an idea of what is the correct set of carb jets for my combo?... i have 73 - 82?

thanks