9.73@ 141.6 - 6spd, IRS, KB 2.8H

broke7

broke7

Stock IRS Guru
Established Member
Joined
May 4, 2003
Messages
4,249
Location
Alaska
Made some changes from last weekend, and the car responded bigtime. Went down to 12psi in the tires from 15. Airbags from 11psi to 5psi each side, and went from a 8.2" lower pulley, to a 8.4" lower pulley adding 2psi for a total of 26psi.

Had some suspect blowout on the tr6's so I went with some br7's @ .025 for the added boost and safety of a colder plug, I suspect the power might be the same vs lower boost, but a lil more torquey.

Ended up with a new best of 9.73@ 141.6, and a new best 60' of 1.451, still on stock shafts. I think the setup is dialed as it went 1.451, 1.462, and 1.459 on 3 passes yesterday.

Weekend ended short with a broken Coil on pack wire in the harness, need to get a new pigtail, could of been contributing to the blowout issue.


Basics on combo...
KB 2.8H, 26psi, custom inlet with standard Billetflow TB
JLT 110mm MAF with Gt500 sensor
9:1 Teskid
Stock 4 thread heads
Comp Stage 3 Cams
ARH 1-3/4 x 3" Exhaust, 3" Xpipe, Stingers
Lethal Budget Return (Sunoco 110 Leaded)

Stock T56 with a Liberty 26 spline input shaft
Fidanza Flywheel
Spec 5 Clutch

3.73's
Stock Diff
IRS Brace
MM Diff Bushings
Adjustable Shocks
Cut Stock Springs 1/2 coil
Airbags each side @ 5psi
Stock Halfshafts
MM Tierod ends

PA Racing K member
QA1 coilovers 225lb spring, 14"
Lakewood 90/10's

Slick/skinny setup with 28x10.5x15 ET Drag Stiffwalls


Incar video... https://youtu.be/hF2KokdXJPE

Slip
C1AA1B32-97F8-499D-B8A1-FF63DEAC6FAE_zpspy3m58fo.jpg
 
Last edited:
ctgreddy

ctgreddy

Well-Known Member
Established Member
Joined
Mar 30, 2011
Messages
4,166
Location
MI
sick! this gives me hope for my setup. Have any vids of your runs? I just trapped 139 saturday but couldn't hook up to save my life. Need some better rear tires, what are you running? I dont want to do a slick just because It's a street car 99% of the time. Was thinking the et street pro x275's.
 
Brutal Metal

Brutal Metal

Well-Known Member
Established Member
Joined
Feb 2, 2009
Messages
10,571
Location
Largo Florida
Congrats! Damm I'd love to cut 1.4 60's with my wimpy 28 spline IRS, I don't have the balls to launch at a high rpm..:lol1:
 
broke7

broke7

Stock IRS Guru
Established Member
Joined
May 4, 2003
Messages
4,249
Location
Alaska
evolve said:
Any dyno numbers for reference?
Click to expand...


My old motor made 725/664 SAE, stock head, stock cam, Manley 8.5:1 pistons. Usually ran 136-137, best of 139.

This new motor is a 9:1 Teksid, Stock Heads, Comp 3 cams...traps 140-143 like clockwork. Both dyno's are broke right now up here....guessing at this point.


Based off what I have seen others make I would guess its making in the 775-800whp area.

Brutal Metal said:
Congrats! Damm I'd love to cut 1.4 60's with my wimpy 28 spline IRS, I don't have the balls to launch at a high rpm..:lol1:
Click to expand...

Thats only a 2800 rpm launch bud :)

Brutal Metal said:
What were you racing a sitdown lawn mower? haha!!
Click to expand...

Prius...ecoboost

2002BOSS said:
Nice pass. What's the car weighing in at these days?
Click to expand...


havent weighed it...

Obvious weight reduction
Slicks/skinnies
PA Racing K member
Teksid Block
AC Compressor delete (all the other stuff is there, no need for AC in Alaska)
Rear Seat Delete, but that canceled out by the MM 6 pt steel cage, +40lbs.


Car has full exhaust...


I would guess in the 3600-3650 area, im 190lbs.
 
Last edited:

Users who are viewing this thread

Total: 2 (members: 0, guests: 2)


Top