new to f-bodies.. been reading but still have some questions.
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new to f-bodies.. been reading but still have some questions.
ok first, my gearing is supposed to be 3.23's but no matter what i do with my programmer i cant get it to read correctly for the speedo, even with accounting for tire size. previous owner said he thinks it was 3.73's but couldnt verify. how can i determine it without removing the cover? also when i give it some throttle i hear a clunk coming from the back part of the car, possibly suspension or rear axle. any ideas? it already has a new spohn eurethane trans mount that i put in last weekend, so its not that.
with my current mods my car (supposedly) ran a 12.7@109 with mods in my signature. if it does in fact have the stock gearing, what kind of time decrease can i expect by going 3.73 or 4.10? its a daily driver that gets about 10 miles a day... rarely gets out on any type of highway, so not concerned much about MPG's. i just wanna make sure my rear is good before putting in a converter and heads and cam swap.
with my current mods my car (supposedly) ran a 12.7@109 with mods in my signature. if it does in fact have the stock gearing, what kind of time decrease can i expect by going 3.73 or 4.10? its a daily driver that gets about 10 miles a day... rarely gets out on any type of highway, so not concerned much about MPG's. i just wanna make sure my rear is good before putting in a converter and heads and cam swap.
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ok. any more input on the other things? my sticker in door jam indicates 3.23, but who knows if someone grabbed a junk yard rear and swapped it out that had 2.73's.
also either way, I want to change out the gears, and refresh everything back there (pinion bearing, axle bearings etc) so is there any recommendations on parts? i came from diesel trucks so i dont know much about what works good on these cars...
also either way, I want to change out the gears, and refresh everything back there (pinion bearing, axle bearings etc) so is there any recommendations on parts? i came from diesel trucks so i dont know much about what works good on these cars...
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If you don't already know, after you figure-out what gearing you have, tape measure the tire and wheel to figure-out what number to plug into the tuning software table. Your speedo will be more accurate.
I mention this because I was cruising down the highway with a cop right behind me and my speedo was reading 65, the speed limit, but I got pulled over for speeding. It turned out that the standard 25.66" figure for 17" wheels was way off.
I mention this because I was cruising down the highway with a cop right behind me and my speedo was reading 65, the speed limit, but I got pulled over for speeding. It turned out that the standard 25.66" figure for 17" wheels was way off.