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Any recomendations on tire pressure?

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Old 09-08-2007, 10:39 PM
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Car: 1987 IROC-Z
Engine: 383 with Edelbrock ProFlow EFI
Transmission: TH350
Axle/Gears: 12 bolt 3.73 Eaton posi
Any recomendations on tire pressure?

I have a stock 305 5L V8 that I'm going to start autocrossing and I was wondering what tire pressures everyone thinks would be best.

I plan on running 44 front and 40 rear.
Old 09-09-2007, 11:34 AM
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Car: 1984 Z28
Engine: SLOW carbed ls
Transmission: TH400 with brake, 8" PTC converter
Axle/Gears: moser 9" 4.11
Re: Any recomendations on tire pressure?

what kind of tires? what size/brand/etc?

I'd run 40 front and 32-ish rear if it's street tires and adjust the rears accordingly for contact patches made during a burnout. If the inner is darker drop psi a little(2 pounds) then try again. If the outer is darker, add pressure.

Drag radials are 18-22 and slicks are 13-18 for starters. Good luck.
Old 09-09-2007, 10:19 PM
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Car: 1987 IROC-Z
Engine: 383 with Edelbrock ProFlow EFI
Transmission: TH350
Axle/Gears: 12 bolt 3.73 Eaton posi
Re: Any recomendations on tire pressure?

Originally Posted by xpndbl3
what kind of tires? what size/brand/etc?
BF Goodwrench G-Force 245/50-16

Are you giving me figures for drag racing or autocross? I need autocross figures.
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