1973 speed off the line
#1
1973 rear end gear ratio
I own a 73 with an 8.5:1compression ratio (I think). I want to pick up the speed off the line by simply changing the gears. Can this be done? A friend of mine had a 73 that really flew off of the line, the only difference was was that he had headers, so I put headers on mine. It didn't seem to make a difference (at least not that much) so I took them off.
I mostly drive on the streets and have very little highway driving.
I have P235/60R15 tires, if that makes a difference.
Without going expensive, what is the best way to increase off the line speed?
BTW, I have an auto, 350 with a 4 barrel quadrajet. :confused:
[Modified by Ship1, 9:00 AM 8/5/2001]
[Modified by Ship1, 9:04 AM 8/5/2001]
I mostly drive on the streets and have very little highway driving.
I have P235/60R15 tires, if that makes a difference.
Without going expensive, what is the best way to increase off the line speed?
BTW, I have an auto, 350 with a 4 barrel quadrajet. :confused:
[Modified by Ship1, 9:00 AM 8/5/2001]
[Modified by Ship1, 9:04 AM 8/5/2001]
#2
Le Mans Master
Re: 1973 speed off the line (Ship1)
i am assuming yo mean you have a 8.5 compression ratio not gear ratio you need to find out what gear ratio you have first..3.08,3.55 ,3.70 etc...then decide ...a different gear change will help you accelerate faster from starts.
#3
Race Director
Member Since: Apr 1999
Location: CORVETTE 77 385 C.I. TEXAS
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Re: 1973 speed off the line (Ship1)
Multiply 1st gear X final (axle) to determine overall. Gears will definitely make a difference. Suggest get engine tuning right first, recurve dist., eliminate T.C.S., etc. Then cam it up to increase overall power. Then see if you want more gear.
#4
Safety Car
Re: 1973 rear end gear ratio (Ship1)
If your 73 is a stock L48/Auto, you probably have 3:08 gears. Those are great for top end, but not very good for off the line. Try a looser torque convertor first, then if you still want to do gears, you can go with some 3:55's or 3:70's.