so I went to the track last Sunday and raced her hard in the 1/8th mile...
the car is a 86 trans am with 140,000 miles I was at 3900 ft above sea level.


my mods are
ported upper plenum
custome intake with K&N filter
wells SU-145 MAF
air foil
adjustable Fuel pressure regulator set at 50lbs
egr delete
air pump delete
msd wires
ngk plugs
hypertech cap and rotor
hooker headers 1 5/8 primary to 3" collector
3" exhaust straight pipe
160* thermostat
4 core radiator w/ electric fans and fan shroud
custome tune from john wayne (its a little off at wot, wide band says its 10.5-11.0 afr at wot but were fixing it.) but the tune is bad ***!!!
level three 700R4 raptor transmission with a 2800 stall and 3.27 gears.
running BFG comp-2 tires.


I consistently ran a 10.1-10.2 @ 66-69 mph my 60 ft was consistant at a 2.0-2.2


how are these times for my LB9... I know the elevation plays a huge part and my 140,000 miles on my block. just want to know what you guys think.

 

i still have the peanut cam lol I hate that thing...


also I have AS&M runners going to be putting on soon. there getting powder coated at this moment.

 

I'm not a 305 buff that seems pretty slow. I think a lot of 305 cars can get in the 14s 1/4 mile.

 

forgot to mention that the air I think was bad being the temp was 105 degrees and the humidity was 39% that day.

 

that is a decent pass,good air and cooler temps will get in 9's,my daily runs mid 9s,

 

There was another 305 thirdgen trans am up there and I smoked him every time.. head 30,000 miles on his engine.. although it was an 84 carbed car but it also had a performance transmission as well with a 22 or 2400 stall.. mine is more built than his but was still fun with 305 vs 305. Lb9 cars were that much more power than the carbed or what. Good guy though.. he kept wanting to run me lol.

 

My LB9 with less done to it that would make it faster at 129,000 miles (it would the valve guides were so worn that it would blow oil smoke sitting at idle after about 30seconds or so):

Caption from the video:
This is an '87 Trans Am with an internally stock LB9 (305 TPI) + T5 with headers. It also had a 9" ford rear swapped in with slightly better gears (3.50), but that's probably a net loss since it's MUCH heavier than the 10 bolt. It's also running a MegaSqurit ECM, mostly because the stock MAF died and I had the MS sitting around, nothing done there that couldn't be done with the stock ECM and some chip burning. The car weighed 3580 that day, me, about 250.

I was having problems with the coil wire popping off. You can hear it misfiring in the burnout box and it wouldn't rev past about 3400rpm doing the burnout. After the pass I found the coil wire sitting next to the coil tower popped completely off, I'm not sure how it was running.

The rest of the timeslip:
Pass 5
Lane 2
Reaction 0.183
60ft. 1.852
330ft. 5.564
1/8 Mile ET 8.667
1/8 Mile Speed 79.73
1000ft 11.351
1/4 Mile ET 13.622
1/4 Mile Speed 99.89

 

FWIW, you can look up historical data for weather on wunderground (Capital Raceway in Crofton MD) and then use one of the online calculators correct that and your pass to standard and compare them. I suspect that the conditions for that day have that I had little correction where if you were at elevation you probably have a bit (I'm curious what track is 3900 above sea level?).

Doing some quick estimating (converting your times to 1/4mile and then adjusting for the conditions you listed, if you gave me a track and a date it would be more exact) it looks like that works out to about:


which I think is about average to pretty good for what people around here run with these cars (I go faster with everything, but that's just me )

 

that's awesome... it was at an airstrip, in Helena montana.


I did install my new AS&M runners and a awesome job on porting and polishing up the upper plenum. I did feel a difference in power all through the rpm's. also ran a friends 91 5.0 mustang/auto with 35,000 miles with a cold air intake and ignition mods and a cat back and a little weight reduction from a light going on to a highway and from the dig I consistently ripped from him and on a roll from 35+ I pulled from him. I didn't pull real hard but I pulled from him with no problem. but from the dig. . .... I raped him bad..


I thought the fox body's were suppose to be more superior in straight line? I have also raced an 86 fox body and beat it even worse than the 91.