Hmm, easy to do, but I'd be scrapping too many parts to get you there!!

Heavy TRW pistons, I'm guessing. A 440 with Eddie Rpm's isn't going 10.0 with those slugs, unless you add a plate!
A victor, or M1 w/adapter would be a tenth or more improvement over the Team G.
I agree the gear is too deep, and the converter is too tight, so don't even think of changing the gear until you address the converter problem.
Not fond of the cam, but I agree with the previous poster's suggestion to advance it. I like the old 304/640 ultradyne, or the 630 lift hughes solid better.


I'll explain my journey from where you are now, to where you want to get to. 2950lb. Challenger, powerglide 9" 4800 stall, 4.56 gear, 14X32's

I put together a budget 440, TRW 11.5 pistons, stock rods, ported 906's, 555/570 Hughes Hyd. cam, Team G, 1150 dominator, 2 1/8 headers.
10.78-123 best, but in the summer I could barely get below the 10.99 index to run SST. The Hughes Cam was on a 110 lobe center and loved the bottle 9.65-9.80 on a 200-250 hit.
I went to an M-1 with a two inch adapter and dropped a solid tenth in hot weather. After two years of running, I rebuilt the short block, added OTB Eddies, and a MP 590 solid cam. Went 10.65-125, then 9.64-136 on 1 stage, then 9.21-142 on two stages, dumping the rods out at 1100ft.
7 passes on my new Eddie Rpm's and they had pushrod dents in the deck and 4 bent intake valves!

My new 440 Short block had aluminum mains, aluminum rods, and ross pistons. A 304/640 ultradyne cam, the Eddies got a gasket match on both sides and an .010 taken off the deck.
The first 20 or so passes were dissapointing until I realized the 9" converter had a sprag going away. Put in an 8" 5600 stall and went 10.12-131 almost immediately. That was the best combination for all out on the motor, but the 8" converter wasn't ideal for SST t-stop racing, and the nitrous would cut right through it jumping the Rpm to 7100 when you stacked the 2nd system on. Still netted my first 8..8.96 at only 146, trapping at 7550.
I ended up with the 9" back in, spragless this time, and a 4.30 gear. While it improved the car on the stop, and bottle, it cost a little in ET, all out/NA, with the car typically around 10.25-132. Years later, after a freshen-up, the Eddie RPMs got about "10 hours worth of bowl work, just a little clean-up" in the words of my machinist, and another .010 off the deck, and in excellent conditions it went an all-out best of 9.96-134.2 with the tight converter and mild gear.