Bad Apache

Great improvement! Knocking on that 9 second pass. Chassis worked great on that run as well.

408GT

iTrader: (2)

Last season with the car I learned a lot and had a good time with it. With the help of 3 Window on here I was able to get my tune a lot better than it was and get my boost controller working really well. Unfortunately on the last pass of the season I hurt it. On the release of the t-brake it spun and I peddled it once to regain traction. It hooked and went a 6.5 @ 115 w/ a max boost of around 17 iirc. I got the motor out this week and found #5 rod just barely bent (I was on pump gas no meth). I bought a set of rods and pistons from Steve Morris and will be dropping it off at the machine shop today. The new pistons will drop my c/r from 10:7 to 9:1 respectively. I'm hopping to turn up the S-480 now with the decrease in compression to get the turbo in its more efficient zone. I'm going to go over the car while it's down and try to pull some more weight out and clean things up a bit.

Bad Apache

That sucks. At least it was the last pass of the season. Thanks for updating the thread. Steve weighed his LX recently. I believe it's 3050 w/o driver currently. He still hasn't done the manual window conversion. He weighed the pieces and it was a very small difference. Good luck on the diet!

408GT

iTrader: (2)

I've been SBE all this time and it's done well so I won't complain. I think it will be good to get some compression out and have some good components in the bottom end.

From what I've read it didn't look like there'd be much of a weight difference from manual to power windows (on the Mustangs anyway). I'd like to get down to that weight, but I don't want it to feel like a tin can.

I built another one of these cars a few months ago. It's a white 85 LTD just like this one, but I used an LS-1 and a 4L60 on the stock computer. It's been a good DD so far. I even drove it down to Daytona for the Turkey rod run and got 21.8 mpg.

Bad Apache

Awesome DD! Steve's isn't a tin can by any stretch. Just has a sbf and T5, and lots of small weight removal. I would rather build more HP than strip a driver down too much. Takes all the fun out of driving it quickly. Look forward to your results next season.

408GT

iTrader: (2)

I'm sure all of the turbo stuff and 4L80 is where my weight is over his. Hopefully with the built bottom end I'll just be able to turn up the power to make up for the weight.

The 85 is a nice DD, I'm sure it'll end up with a turbo before too long haha.

ls3fox

how much timing were you running? and how do you have the boost controller setup

408GT

iTrader: (2)

I'd have to go back and look at my timing table to be sure, but I think I was around 14* @ 18 psi (pump gas) then running a flex fuel sensor to add more timing based on E content.

I'm using a single 3-port solenoid using boost vs time.

408GT

iTrader: (2)

Finally got the car back together and running again. I switched to a dual fuel setup w/ two separate fuel systems so I don't have to worry about finding E since our local station quit carrying it. Here's a quick video:

Bad Apache

Bout time!

408GT

iTrader: (2)

I know right? Now that I finally got it going there's rain in the forecast for the next 15 days! ugh

Bad Apache

Been raining here since Sunday. I feel your pain. Can't even drive it to tune a little.

408GT

iTrader: (2)

Still raining here, so haven't been able to drive it. Here's a walk-around video:

Bad Apache

Quit sending that stuff up here. Racetrack has only been open like 3 days this year.

408GT

iTrader: (2)

I drove the car 1 hr out to the track last Friday night and was able to get 3 passes on the car. First pass I was having to start over with my boost controller and just trying to get some data, so I just populated the table w/ 20% DC to see what it would make. The car left good and made a good clean pass of 9.8 @ 136 w/ a 1.4x 60'. It made about 3psi on the brake and ramped straight to 14 psi in 1.5 sec and leveled off at 9psi. The second pass I doubled the DC and it made 18 psi, but it left so hard that I hit a safety cut right out of the hole. The last pass I fixed the safety cut issue and turned it up a little more, but it spun out of the hole and I had to peddle it once. The car ended up weighing 3455 w/ me (170).

Forcefed86

iTrader: (4)

136 at that weight and boost is great! So what did it trap the last pass turned up?

408GT

iTrader: (2)

Here's a video of the first pass.


Force it went 147 mph on the last two passes. I'm thinking about going from the 3:27 to a 3:55. What do you think about that?

Forcefed86

iTrader: (4)

Sounds like you still have a little room to turn it up... but at that weight, I think the mechanical advantage will help the 60’-330’ for sure. If you’re combo is setup to take advantage of more RPM and can plant the tires... it should be faster all around. If your top end isn’t setup to take advantage of the RPM, the lower gear might keep you in your power band happy place. With an OD trans, might look into even more gear. I’d shoot for 7kish thru the traps in the ¼.

408GT

iTrader: (2)

Great, thank you for the info. The cam is one that JFR did for it @ .575/.596 221/230 on a 114, but we degree'd it on a 109.5 CL. A little more seat time and dialing it in and I hope to go low 9's.

Bad Apache

Coming right along. Glad you got it back out again and made it home to boot.