LT1-LT4 Modifications 1993-97 Gen II Small Block V8

3.23 to 3.73 ET gains

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Old 10-20-2010, 10:41 PM
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Default 3.23 to 3.73 ET gains

Well today I found out i have the stock upgrade up to 3.23's and ordered the wrong gears and will be shipping them back tomorrow lol
What are the gains going to be from the 3.23's to the 3.73s I a tune LT's True duals and a CAI and thats it and its running 13.3's anyone done this swap and have any insight on it?
Old 10-20-2010, 10:55 PM
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With equal DA you will be lucky to pick up .2.
Old 10-20-2010, 11:40 PM
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well thats decent in my eyes I'm at sea level so everything is fine there
Old 10-20-2010, 11:42 PM
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Originally Posted by Lawhead
well thats decent in my eyes I'm at sea level so everything is fine there
Your altitude will be the same of course, weather will vary however whether it be humidity temp etc.. That will alter the DA and not show the true gains.
always correct your times so you know.
Old 10-20-2010, 11:54 PM
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yeah well hopefully Florida gives me some nice low humidity nights this winter and have myself a close to 12's car. Need some DR's with the 3.73's because Im hearing traction will be a big problem
Old 10-21-2010, 12:02 AM
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Well in my buddy Speeds car it picked up .27 in the 1/4 et, mph stayed the same tho
Old 10-21-2010, 12:04 AM
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Originally Posted by Lawhead
yeah well hopefully Florida gives me some nice low humidity nights this winter and have myself a close to 12's car. Need some DR's with the 3.73's because Im hearing traction will be a big problem
What are all your mods?
Originally Posted by robsquikz28
Well in my buddy Speeds car it picked up .27 in the 1/4 et, mph stayed the same tho
Both times were corrected?
Old 10-21-2010, 12:07 AM
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My mods are Long tubes with a true dual set up with an X pipe a CAI and a tune from solomon. was the .27 gain both with street tires?
Old 10-21-2010, 12:40 AM
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both with drag radials. Nothing was changed but a gear swap. But I have seen this to be a typical gain of .2-.3 with a gear swap. But the .3 is closer suited to 3.90-4.11 gears but I have seen a couple 3.73 gear swaps get that .3
Old 10-21-2010, 01:02 AM
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Well maybe with the DR's and gears i can get this thing to run a 12.9999999 still a 12 sec car
Old 10-21-2010, 12:58 PM
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12 sec bolt on LT1's!
Old 10-21-2010, 01:28 PM
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Originally Posted by Lawhead
My mods are Long tubes with a true dual set up with an X pipe a CAI and a tune from solomon. was the .27 gain both with street tires?

Stop wasting money trying to get in teelves. call ptc and order a 4000 converter for 450$and run bottom twelve high eleven all day.
Old 10-21-2010, 01:30 PM
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I went from 13.0@105 to 12.56@111 from 3.23's--->3.73's + a cam.
Old 10-21-2010, 05:13 PM
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Well then that will probably be my next mod a 3600 stall. just one mod at a time haha
Old 10-21-2010, 05:18 PM
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i lost 2 tenths and gained 1.5mph going from 3.42 to 3.73
Old 10-21-2010, 05:24 PM
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was that from spinning?
Old 10-22-2010, 01:18 AM
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4000 stall is way too friggin big for a DD / bolt on camaro lol......
Old 10-23-2010, 02:36 PM
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Trans AM haha but got the rear end out today pretty easy doing that a lot easier then i thought but of course ordered the wrong gears so the waiting game begins
Old 10-24-2010, 12:43 AM
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A 4000 stall is not that big at all...I used to dd my bird everyday with a ss4000..drove stock
Old 10-24-2010, 12:50 AM
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well i figured the bigger the stall the harder on the 10 bolt so the 3600 will probably be a lil rough on it to begin with lol


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