mickman

I have a 1991 Z28 with a 305 TPI auto with OD. I heard that stock my car should run around 15.2. We recently gutted the bottom of the air boxes, put in 2 k&n air filters plus the tornado intake. then put on 2.5 inch cat back flowmaster exhaust. installed 3.73 gears, low temp stat, stage 2 jet chip, bumped the timing from 6 to I think 12. I was just wondering what anybody thinks what my car should run roughly. I think it should be mid 14's(I hope).

fly89gta

iTrader: (1)

this should be in the drag racing section

You actually used a tornado intake thing? :sillylol:

tpivette89

i was thinking the same thing

all the mods youve done look good so far, except the 3.73 gears. way to much gear for a stock heads/cam/intake TPI motor. theyll rev you out of your powerband too quickly. with the LTR setup, nothing more than 3.45s should be used

singleslammer

man i would take out that tornado thingy. the reason it gets ya better gas milage is because it blocks the air coming in. i can put a big hunk of metal in mine and it will do the same thing.
now the throttlebody spacer with the swirl in it is for real. you'll see a little gain.

MdFormula350

mid 14's could be possible.

Coqpit

I think you'll be at around a 14.7.. I ran a '91 Z28 LB9 that had everything you have plus headers but didn't have the gears. This was 1/8th mile but he did a 9.92 when he ran me and I think he said he ended up with a best of a 9.7x at the end of the night.

Dave