Carb cfm with ported heads?

KnuckleDuster said
There are a few other factors at play that make me think I can get there-

Tires - I've only been able to launch at 2500rpm on the Cooper Cobras with 18 lbs in them. Any higher and I spin 'em. I am looking into getting some Nitto drag radials on there.

My driving- on the 12.66 run I hit the rev limiter shifting to third with the factory console shifter, and lost some time. I will be running a B&M Quicksilver this year. I think the car could run better as it was. It has trapped at 107mph on other runs. I have some room to improve my driving, lol...

Then there is the carb...I will make some runs with the 750 and try to dial it in with the AFR meter and see what's up first.

I think it can be done, but only time will tell.

Here's the 12.66 time slip.

View attachment 1715141620

The fact with an automatic you can only launch at 2500 isnt costing you anything.
I play around between 1500-3000 off the foot with different cars and motors over the years and almost never does it make any difference in ET thats noticeable if the combo is halfway sorted out. And this always with tires that stick, so i can try different stuff
My W5 motor ran identical off the foot or the transbrake. Ran it both ways hundreds of times at different type races. 9 sec passes
Current car i leave at 2000 off the foot just because its easier to note the tach, and it isnt wanting to push me at that spot. Car ran the same at 1500, but my lights are better at 2000 launch.
Lots of guys leave off idle. Again, motor goes instantly to the convertor, so it dont matter much ET wise

Hitting the chip second to third is probably couple of hundredths, unless you just left it there forever.

Carb might net you a tenth. Maybe.
If your only going 103, you got something else going on than any of this stuff
My bone stock 360 shortblock except cam with stock eddies went 109 at 3300 pounds first time out with the car last year and i was super disappointed.
Picking away at it has gained me almost 10 mph with it. Same gears, convertor, tranny, carb, headers, launch and shiftpoints.