thanks for the help 
Question on pinion
Question on pinion Is it normal for a 3.73 pinion to be smaller than stock 2.73 pinion ?
I am getting my gears changed out and my machanic took my old
ring gear and pinion out and got worried when he saw the size diffrence.
He said I had the wrong ringear and pinon for my car. Said he could get me a brand new set.I told him ok. Well he got it and was looking at it and saw that it was the exact same as the one I had. He said all knew to do was bolt it up and see how it fits. Thanks in advance
I am getting my gears changed out and my machanic took my old
ring gear and pinion out and got worried when he saw the size diffrence.
He said I had the wrong ringear and pinon for my car. Said he could get me a brand new set.I told him ok. Well he got it and was looking at it and saw that it was the exact same as the one I had. He said all knew to do was bolt it up and see how it fits. Thanks in advance
Dude, seriously......get a new mechanic asap. That guy has NO clue.
2.73 has 15 teeth on the pinion, 3.73 only has 11 teeth......hence, it HAS to be smaller, thats how the RATIO is changed. They both have 41 tooth ring gears. RUN AWAY NOW!
2.73 has 15 teeth on the pinion, 3.73 only has 11 teeth......hence, it HAS to be smaller, thats how the RATIO is changed. They both have 41 tooth ring gears. RUN AWAY NOW!
Found out my mechanic did know what he was talking about the gears we had were for a 98 and my car is a 99 they changed then. Had to reorder new ones. Will have it out and running by next wednesday
I seriously doubt there's a difference between 98 and 99. The number of teeth will remain the same, as will the size of the gear. I think he's full of crap. 11 tooth pinion is an 11 tooth pinion, and sized accordingly. The 13 tooth pinion will be noticeably bigger. This is part of the reason some people advise against the 4.10's in a 7.5" rear, as the small pinion is simply too small to be effectively strong. All 7.5" GM ring gears will have the same ID, but also, sized accordingly to the number of teeth. You might want to keep an eye on the posts before the hand in your wallet.
olly
EDIT: make sure you're getting the proper thickness gears for either a 2 or 3 series carrier. do a search, your stock gear ratio will determine what you had. I believe 2.73 and taller used the 2 series carrier, 3.23 (?) and shorter used the 3 series.
olly
EDIT: make sure you're getting the proper thickness gears for either a 2 or 3 series carrier. do a search, your stock gear ratio will determine what you had. I believe 2.73 and taller used the 2 series carrier, 3.23 (?) and shorter used the 3 series.
Last edited by 67RSCamaroVette; Jan 14, 2006 at 12:06 AM.
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Verdad Gallardo A 2'73 gear set has the serries 2 carrier and the 3:23s up have the 3 serries this is what I was talking about in my previous post! Anytime you put a bigger ratio on the 2 series ya have to get the thick gears they sell to use that carrier or buy a new 3 serries carrier with the standard gear sets!