xb et 13.10 need help to crack 12s

[Giant]

No sure what style thremos you picked up but the work best with some sort of cowling. A lot people seem to be fitting the BA twin style fan setup about $50 from the wreckers these move 3000cfm per fan.

[Parfrey]

As others said, you need some decent tyres!
No point going to a transbrake if you not even using close to your 3800 stall.. if you have traction issue's good tyres will get you straight into 12s

[adz790]

maybe strip some weight off her i.e spare tyre reo bars... helps

[ash68]

make sure your not sitting in the middle of the water when you do your burn out get some one to guide you to the edge of the water .because it builds up under your guards then drips down onto the start line.also work out a routine and stick to it .good luck

ba xr8 ute 11.69 118 manual. stock motor .nos .
1.55 60ft

[Rural 351]

Originally Posted by falconsmurf

set up

xb falcon 3700lbs
351ci approx 217rhp 318lbft@5260
2v heads 4v valves
crow 21649 cam 108/234/244
pedders 90/10 front shocks
pedders soft rear shocks
3800rpm stall
3.89gears
funnel web/850 demon
shift kit
275/15/50s 27high
60ft......1.99
330ft.....5.48
660ft.....8.42
1000ft...10.97
et13.10@102.72
i cant hold stall over 2000rpm on line without breaking was thinking of transbrake though may not suit my combo currently redline over finish line,set tis what is just chasing 2 tenths maybee caltracs?carb is big i know also have 150 n20 shot not ran.all ideas welcom.

You cant avoid it your cams to small, I did a similar motor for a mates XB 4 door had a crow (21823) 249/258 @ 50 109 lc around 620 lift 850 carb active manifold small converter about 3000 rpm ( could only hold just over 2000 on the line) it ran 12.6 107mph, I think you should do a cam change even with your small stall conveter you will pick up a few tenths,

[El Caco]

I'm surprised no one picked this up

Originally Posted by falconsmurf

351ci approx 217rhp 318lbft@5260

(Torque x rpm)/5252 = HP

(318 x 5260)/5252 = 318.48 HP

[red80]

When we were playing with relatively slow cars as teenagers we used to drop the fan belt off before the run and push it up to the line. Do the pass then put it back on on the return road. This was only in Geminis and escorts that ran 15 and 16 sec times but usually dropped a few tenths. Air cleaner off? Back seats out? Tyre pressures? Slicks would help but there are plenty of cars running consistant quicker times on normal street tyres. I used to run reasonably consistant low 12's with 195 street tyres in a turbo rotary escort (don't laugh it was a lot of fun)