Making some changes and shooting for 9's
Thread Starter
TECH Enthusiast
iTrader: (1)
Joined: Jul 2010
Posts: 554
Likes: 0
From: CroSSby, TexaSS
Making some changes and shooting for 9's So my current track car (99 trans am) is torn apart in my driveway 
The previous setup consisted of:
370ci, stock 243's,Tick street heat cam 231/238, 4l80e, 3.70 gear, yank 3800 power adder stall, MT ET PRO tire,3 way comp shocks in rear and no sway bar upfront with stock shocks, 200 shot on a plate, car weighs 3710 with me in it. I weigh an easy 127lbs.
Best time I ever got out of it was 10.46 @ 130mph, 1.49 60ft DA was upper 1500's at sea level, plugs were real rich, timing was right at the bend Br7ef plugs.
I tore the car apart this weekend and sent the heads to get CNC'd by a friend of mine. (315CFM at .600 lift, and very good flow numbers below as well) and milled. I also got a custom grind from Martin, 233/248 113+4 I believe, Similar to the polluter cam in my 5th gen
I'm shooting for around 11.5:1 compression up from my previous 10.4:1
This thread will kind of be my documented journey into the 9's. I'm planning on running a 250-300 shot on b9 plugs, the 4l80e gearing has been working with me in terms of traction so far.
Really wanting to dip into the 9's soon, Just been real busy at the shop I work at building a turbo truck. This week will be full of pictures and progress
If anyone has any suggestions to try, I'll be more than happy to try them
The previous setup consisted of:
370ci, stock 243's,Tick street heat cam 231/238, 4l80e, 3.70 gear, yank 3800 power adder stall, MT ET PRO tire,3 way comp shocks in rear and no sway bar upfront with stock shocks, 200 shot on a plate, car weighs 3710 with me in it. I weigh an easy 127lbs.
Best time I ever got out of it was 10.46 @ 130mph, 1.49 60ft DA was upper 1500's at sea level, plugs were real rich, timing was right at the bend Br7ef plugs.
I tore the car apart this weekend and sent the heads to get CNC'd by a friend of mine. (315CFM at .600 lift, and very good flow numbers below as well) and milled. I also got a custom grind from Martin, 233/248 113+4 I believe, Similar to the polluter cam in my 5th gen
I'm shooting for around 11.5:1 compression up from my previous 10.4:1
This thread will kind of be my documented journey into the 9's. I'm planning on running a 250-300 shot on b9 plugs, the 4l80e gearing has been working with me in terms of traction so far.
Really wanting to dip into the 9's soon, Just been real busy at the shop I work at building a turbo truck. This week will be full of pictures and progress
If anyone has any suggestions to try, I'll be more than happy to try them
