Gearing a screw blown 3200lbs car

45%rear and 55 front weight 119 wb 1960 Chevy 33x16 tires. 577 cui 5' bs wedge bbc whipple screw efi controlled. Mostly 1/8 mile. 11' mark williams curently 4.30. Dont have a trans yet so i wonder what to look for, 2 or 3 speed? And what trans and rear gear ratios? Heavy car says 3 speed but the high power level maybe lets it get away with a lighter and simpler glide? Will run a converter. Many things to consider and are trying to figure out what trans and rear combination that will work best.
I dont have any experience from this power level and havent ran this car before so a big tuning window is needed and the purpose is to learn and have fun not to set a new world record, on a good track i think realistic et performance shuld be 4.2-4.5. Thanks for any help!

 

I currently run a 3000 pound sedan with a 481 cube chev and a whipple A980 @22 over (class requirments) run a 44% & 31% packs in a CS1 and 4.56 rear ratio 34.5 rear tire. Best Et 6.45 @ 222 MPH.

 

Ok is that a 1.88 first gear ratio? Wow that's fast at 3000 pounds and only 20 over!

 

Well your limited with that 11" rear on the gearing. Me I would be in the 1.88-2.04 1st with a 33% split. Convertor will play a big role as well.

 

Yes the "easy" and cheap way will be to let the 4.3 be there and get a nice used 1.8 first superglide 4 but then maybe the easy days turns over to a violent nightmare trying to avoid smoking wheels.
A nice used 2 speed lencodrive or bruno/lenco maybe is the ticket, anyone have anything?
Yes I'm looking at a chance nsx

 

I ran 2 speed 400 1:48 first 4:30 rear @ 3000 1.0-1.02 60ft with a 34.5

You may rethink your tire I have had issues with that tire on heavy cars seamed to tire shake easy and violently. I believe the side wall is not stiff enough for the wieght I wound up switching them to 33-10.5 or 34.5 if they had room

 

I will keep the 4.3 in the rear. I'm afraid 1.88+ on first will be a little to aggressive. Thanks for input

 

Will keep that tire recommendation in mind, thanks. How much power from what combination was those numbers with 1.48 first?

 

We did it with twin 91mm turbos on a 526 Hemi and also 498 Hemi with d-rotor screw 108 over