Last race of the year
Thread Starter
Joined: Mar 2004
Posts: 1,643
Likes: 50
From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Last race of the year
Last race of the summer and I decided to get my 10 second timeslip.
All runs were through the muffler.
1st pass with a 50 shot of nitrous
11.36@116.3 with a 1.48 60ft
On husky 94 pump gas!
2nd pass with 125hp shot turning the n20 on at 2500rpm
11.01@120.26 with a 1.46 60ft
110 octane fuel
3rd pass with 125hp shot turning n20 on at 2000rpm
10.97@120.26 with a 1.42 60ft
Lifted both tires!
4th pass with 125hp shot at wide open throttle
11.08@118.7 with a 1.40 60ft!
The car leaves the line crooked so I guess I have to get a anti-roll bar.

I also now have to get lower numerical gears. I am crossing the strip at 6000rpm and my stockblock 400 runs out of power at 5500rpm. Maybe a set of 3.55's would keep me in the powerband longer and give me more top end.
Hoping for 10.50's next summer with a 175hp shot!
All runs were through the muffler.
1st pass with a 50 shot of nitrous
11.36@116.3 with a 1.48 60ft
On husky 94 pump gas!
2nd pass with 125hp shot turning the n20 on at 2500rpm
11.01@120.26 with a 1.46 60ft
110 octane fuel
3rd pass with 125hp shot turning n20 on at 2000rpm
10.97@120.26 with a 1.42 60ft
Lifted both tires!
4th pass with 125hp shot at wide open throttle
11.08@118.7 with a 1.40 60ft!
The car leaves the line crooked so I guess I have to get a anti-roll bar.

I also now have to get lower numerical gears. I am crossing the strip at 6000rpm and my stockblock 400 runs out of power at 5500rpm. Maybe a set of 3.55's would keep me in the powerband longer and give me more top end.
Hoping for 10.50's next summer with a 175hp shot!
Last edited by LB9GTA; Oct 1, 2013 at 11:18 PM.
Senior Member
iTrader: (2)
Joined: Apr 2012
Posts: 604
Likes: 1
From: Norwalk, Ohio
Car: 1989 Firebird Formula
Engine: 385
Transmission: Full Manual TH350
Axle/Gears: Moser 9" 3.70
Re: Last race of the year
Can you fit a taller tire in there? That'd be the easy way to gear swap lol.
Thread Starter
Joined: Mar 2004
Posts: 1,643
Likes: 50
From: Manitoba
Car: '91 GTA
Engine: 421sbc
Transmission: Powerglide
Axle/Gears: Ford 9" with 3.89
Re: Last race of the year
I have used 28x12.5 et streets before and they are slightly larger but they do rub the fenders around corners.
So no, I can't fit a bigger tire.
Gear swaps aren't that bad with a 9" anyway.
So no, I can't fit a bigger tire.
Gear swaps aren't that bad with a 9" anyway.
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