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Old 01-02-2003, 05:39 PM
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Post how much hp and what gears to run

I have a 83 buick regal with a 350(chevy) in it. The engine has 0 deck forged pistons,camel hump 202 heads #492 (i had to flow cut seats to fit severe duty valves) 1.6 roller rockers,ported and polished to flow roughly 200cc,238/246@.050-480/495 lift cam,rhoads lifters, performer rpm air gap intake,stock dis,msd digital 6 ign, turbo 350 trans, 3000 stall, 10 bolt rear end. How much flywheel hp am i producing and with 28" tires, what gears should I run for 1/4 mile racing

[ January 02, 2003: Message edited by: gleesamo ]</p>

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Old 01-02-2003, 07:06 PM
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I am calculating about 343 hp at 5200 rpm and 391 ft/lb. of torque at 3700 rpm.

I am guessing at a redline of 6000 rpm.

Also guessing at the dimensions and weight of the car so I used 3510 lb. with the driver.

I also guessed at the tires. I used a racing slick at 28" tall by 10" wide.

I calculate that the car should run the 1/4 mile in 13.15 seconds at 103.9 mph.

The program I use is called PC HOTROD. Check them out www.pchotrod.com
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Old 01-02-2003, 09:52 PM
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I checked put pchotrod and if I dont know how much hp I am producing, how can I give accurate info to calculate my time in the 1/4. I have 64cc heads milled to approx 63 giving me about 10.2 to 1 compression. should i run 4.10 or 4.33 gears to acheive quicker et's? any info is greatly appreciated.
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Old 01-03-2003, 05:46 AM
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PC HOTROD calculates horsepower and torque.

I ran the specs on your engine with some estimating and achieved 343 hp @ 5200 rpm and 391 ft/lb. of torque @ 3700 with an estimated redline of 6000rpm.

I revised your gearing to the following and came up with these performance numbers:

With a 4.10 gear
13.06 @ 105mph

With a 4.33 gear
13.04 @105mph

With a 4.56 gear
13.03 @ 105mph
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