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Mopart guys, i'm having very low end torque problems. I have a 68 dart 383. It is pretty much stock but bored 30 over, schumacher headers, 383 torker mainifold with a new holley 770 avenger carb, new Comp. XE274 cam and lifters, stock heads ported and polished with HD springs, new pushrods, rebuilt 727 trans, 323 sure grip and 3000 hughes stall converter, stock elct. ignition with orange ECU box. Everything is pretty much new in the motor, compression test is good, vac.is good but it's totally a dog on the low end out of the hole. the motor runs great and it seems to make good power but it just seems like its not getting the power to the rear wheels at launch. I'm starting to think the new in the box stall converter which i bought from a friend may be clogged or have trash in it. Any suggestions are similar problems and fixes would greatly be appreciated. I have gotten pretty frustrated and don't want to just keep throwing more money at it and hope the problem gets solved. Compression is approx 9.5 - 1 to 10-1,vac.@ 14, intl., dist. @ 12. Thanks.

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Go with the 4.10's. It is a trade off: noise/poor
mileage vs. great street/track performance. If you
are looking for a "true dual-purpose car", you will need an overdrive tranny or unit. Along with
the 4.10's, you have a choice. Either you can make the Torker work with a SMALLER carb (650cfm)
or go with the Eddy RPM manifold and your current
770 cfm carb. Optimize the power valve/jetting in either case.
Try to get your ignition at 35-38
deg. total at in by at least 2200rpms. Double check your compression ratio, since it is possible to have something closer to high 9's. You
did not indicate if you had ZERO DECK height or not. The
total timing may be affected by this factor.
Food for . That lightweight A body should be running, at the least, very low 12's. :twocents