A-833 2.47 1st gear change to 3.09

MidnightSwinger said
I have driven that exact combo(73 A833/3.23) but with a slant six and it would crawl out of first and do burn outs.

Not trying to be argumentive but earlier you said you drove a 340 with 3.23’s in an auto. This is a manual trans discussion but feel free to give your stall and the gearing in the 904 or 727 or whatever automatic you used so we can compare those oranges to these apples.

You also drove a 73, 833, 3.23. Different car? Weight? Mix match of parts being it had a 3.23 in 1973. Should be a 3.21 so that’s Beggs the question, if it had a rearend swap did it have a 1973 gear set in the 833? Perhaps it was an early 3.09 gear set? Wasn’t the same as my factory 2.47.
With a 2.47 first ands 4.10 rear gear would get a starting gear of 10. A 3.09 and a 3.23 has a starting gear of 9.9. My 2.47 x 3.23 is 7.9.

MidnightSwinger said
he has some problems if he can’t get an aggressive launch with a 340 and a 4 speed.

The car does launch well for being geared the way it is. Geared the way it is isn't the best. My definitions of how it accelerates shouldn’t have implied the problem was with the engine.