Need help with my car
07-25-2009, 07:29 PM
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Need help with my car I went to the track last night hoping for better times out of my 98 trans am 6 speed.. The car used to run on motor low 12.20s on motor at 115 mph an 11.00 128 mph on spray. That was with a 10 bolt with 3.73 an on a 275/50/15 m/t drag radials..I now have a 9in with 3.89 with a spool an 35 spline axles an was talked in to a set of 28/12.5/15 M&H cheater slicks..The car last night would only run 12.54 at 111.00 mph an 11.20 on spray at 122 mph ????
are the tires to big does any one have a idea about what my gear is with this setup ??? I am thinking I am to tall geared now..I beleave I need to go back to a 26in tall tire..
The car has a 224 comp cam,headers,ls6 intake,an a custom tune,150 shot nos.. Please if anyone can Help ..Thank you
are the tires to big does any one have a idea about what my gear is with this setup ??? I am thinking I am to tall geared now..I beleave I need to go back to a 26in tall tire..
The car has a 224 comp cam,headers,ls6 intake,an a custom tune,150 shot nos.. Please if anyone can Help ..Thank you
07-25-2009, 07:31 PM
#2
Get a 26 inch tall tire, you got too much tire and not enough gear.
The nine inch is gonna slow you down some also. More weight and sucks up more power than a stock 10 bolt.
If you stepped out for a nine inch, put some slicks on that beotch and drive it like it owes you money.
The nine inch is gonna slow you down some also. More weight and sucks up more power than a stock 10 bolt.
If you stepped out for a nine inch, put some slicks on that beotch and drive it like it owes you money.
07-25-2009, 07:46 PM
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"Another difference between the two rearends is that the 9-inch locates its pinion gear lower on the ring gear to improve tooth contact. This strengthens the rearend assembly but at the cost of approximately 2 to 3 percent loss of power to drive the gears compared to a 12-bolt."
That was from a comparison to a 12 bolt but you get the idea...
That was from a comparison to a 12 bolt but you get the idea...
07-25-2009, 07:56 PM
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so i should expect to lose maybe 1to2 mph but not 4 to 6 right?? On spray it crossed the traps at only 5400 rpms I shift the car at 6500 an on motor i was only about a car to a car in a half from the finish line when I shift to fourth so to me it feels like I am to tall geared now with the 28in tires
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07-25-2009, 08:10 PM
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damn idk then yeah 1 to 2 is noticeable on the track but your right your in a little bit of a bind, keep this up and try to talk to a tuner or someone because thats a wierd problem, sorry thats all I had, hopefully someone with a little more knowledge comes along! Good luck!