axle splines? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

low'n slow · 07-12-2006, 12:18 AM

I am toying with the idea of changing out my 72 chevy rearend for a 9 inch with a posi. I have a leaf spring rearend so the mounts will be fairly easy. What's the deal with the spline count? Is one better than the other? 28,31,35?

Thanks.
Doug

cdowns · 07-12-2006, 05:45 AM

generally the more splines you have the better// more splines=more power=more abuse the axel will handel

low'n slow · 07-12-2006, 10:01 PM

Thanks, now I know.

69gmctowrig · 07-12-2006, 10:39 PM

I'm just curious. why does everyone want to swap to a 9 inch? the chevy 14 bolt is much stronger, not to mention it's a chevy part lol

409biscayne · 07-12-2006, 11:51 PM

Quote:

Originally Posted by 69gmctowrig

I'm just curious. why does everyone want to swap to a 9 inch? the chevy 14 bolt is much stronger, not to mention it's a chevy part lol

I'd like to know too , is it cuz the nine inch is cheaper ? or lighter ?
Thanks ................................. 409

57sailplane · 07-13-2006, 02:55 PM

its lighter... and in the aftermarket world you can build that 9 inch to handle well over 1000hp and ft lbs of torque for less money. plain and simple they were a better built and engineered rear end... and by the way against the right factory ford 9 inch, one with nodular iron third member and the higher number of spline axles i really doubt the 14 bolt is any stronger if at all..
i am a chev diehard. but i also love my drag racing.. and in racing you go with what works. and the ford nine has been proving that in the drag, stock car field for years....

cdowns · 07-13-2006, 04:57 PM

add to that the fact that if you want a weekday ratio for commutin and a weekend ratio for performance you can change the center sections out in less than an hour

07-12-2006, 12:18 AM	#1
low'n slow Too Dumb To Know Better Join Date: Nov 2005 Location: Texas Posts: 882	axle splines? I am toying with the idea of changing out my 72 chevy rearend for a 9 inch with a posi. I have a leaf spring rearend so the mounts will be fairly easy. What's the deal with the spline count? Is one better than the other? 28,31,35? Thanks. Doug

07-12-2006, 05:45 AM	#2
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: axle splines? generally the more splines you have the better// more splines=more power=more abuse the axel will handel __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY

07-12-2006, 10:01 PM	#3
low'n slow Too Dumb To Know Better Join Date: Nov 2005 Location: Texas Posts: 882	Re: axle splines? Thanks, now I know.

07-12-2006, 10:39 PM	#4
69gmctowrig Registered User Join Date: Jun 2006 Location: greenville, north carolina Posts: 42	Re: axle splines? I'm just curious. why does everyone want to swap to a 9 inch? the chevy 14 bolt is much stronger, not to mention it's a chevy part lol

07-13-2006, 02:55 PM	#6
57sailplane Senior Member Join Date: Mar 2004 Location: Nebraska Posts: 583	Re: axle splines? its lighter... and in the aftermarket world you can build that 9 inch to handle well over 1000hp and ft lbs of torque for less money. plain and simple they were a better built and engineered rear end... and by the way against the right factory ford 9 inch, one with nodular iron third member and the higher number of spline axles i really doubt the 14 bolt is any stronger if at all.. i am a chev diehard. but i also love my drag racing.. and in racing you go with what works. and the ford nine has been proving that in the drag, stock car field for years....

07-13-2006, 04:57 PM	#7
cdowns Senior Member Join Date: Jan 2003 Location: daytonabeach Posts: 22,956	Re: axle splines? add to that the fact that if you want a weekday ratio for commutin and a weekend ratio for performance you can change the center sections out in less than an hour __________________ 71c-10 350/2004r/4:11 lowered3/4 longbed/dead by hurricane MEANING OF DEATH::::: SOMEBODY ELSE GETS YOUR STUFF DONT BELIEVE EVERYTHING YOU THINK TAKE MY ADVISE;I DON'T USE IT ANYWAY



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