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Author Topic:   Advantage FORD 9 vs GM 10
nw15x
Member
posted February 15, 2003 08:56 PM
Is there an advantage to use a ford 9" versus a GM 10 bolts. This would be on a camaro chassis. If so can you explain the advantages other than gears.


One87Racing
Member
posted February 15, 2003 09:24 PM
Other than swapping gears easily, let's see......
when you break an axle (not if) the axle is retained in the housing, it's the 350 of axles so aftermarket parts are readily available, if you bend a housing wrecking yards have hundreds of them, better chance of finding a spare part at the track, easy upgrade in a leaf spring car, plus it's a stronger unit than any 10 bolt.


racer17j
Member
posted February 15, 2003 11:10 PM
you got it 87 the choice of gears is another reason it's so popular you can't go much more than a 5something in 10 bolts where you have up to 7.0 now in a nine inch


Pickel
Member
posted February 16, 2003 10:57 AM
Sometimes I wonder if a 9 inch is stronger...lol I ran a 9 inch this year (for the first time) and I broke it every night out..axle after axle...I have been racing since 90 and have been running a 10 bolt and broke maybe 5 axles ( thanks to the walls) ..yes gear selection is limited only up to a 557( I think that is as high as I have seen them)I ran a 538 in my 10 bolt on a 1/2 mile a 3/8 mile with no probs.


marple
Member
posted February 16, 2003 02:08 PM
i'm with pickel.i've ran a 10 bolt since 99 and never had it apart.the gm rear is lighter too.


DMS CEO
Member
posted February 17, 2003 09:26 AM
Lets see gear selction, horsepower rating, availability of parts, easy to setup, cant bump wheels and have your axle pass you because of a stupid non roundy round designed c-clip, and nine inch rear ends look way cooler painted to your color scheme. Think about it...there is a reason tracks suggest a ford nine inch in most of their rules. I think that should cover it.


RC Racing
Member
posted February 17, 2003 11:01 AM
This POST is directed towards Pickel, marple (cuz they were pro 10 bolt), or anyone else for that matter that can assist.

Moving from class that allows 9" to one that doesn't. New class: 2300# after race, MUST run GM 7.5".

What's best way (besides avoiding walls & other cars ) to minimize the possibilty of breaking an axles. I've already converted from drum to disc (won't prevent breaking an axle, but should keep it from becoming a flying hazard), welded axles tubes in place, welded 1" square tubing as a brace from center section to outermost end of axle tube, and run Mosers. And shimming carrier has tight as I can to housing.

Anything I miss?

(By-the-by: I too prefer the 9", but can't run it)

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Pickel
Member
posted February 17, 2003 11:21 AM
a buddy of mine is doing some research on making 10 bolts and 12 bolt rear ends a floater for those who cant run 9inch.. it will make them stronger and safer rear ends to use..


racer17j
Member
posted February 17, 2003 01:34 PM
rc sounds like youy have it covered i take it your running limited mods. i was reading a post on another site the othewr day and somebody is putting ford tubes on the 7.5 rear ends and using the bolt in axles and chargeing a grand same as a new floater would be sometimes i wonder if these guys that make the rules think at all about saftey compared to saving a couple bucks


RC Racing
Member
posted February 17, 2003 06:16 PM
racer17j, you're correct:limited modified. Rules state (at least at the track I'll mainly be racing at and the rules are similiar for most in the area):
"Rear end must be 7.5" GM 10 bolt stock width for 108" M/F. Aftermarket axles, studs and mini-spools are allowed.

Brake, Steel drums or OEM disc brakes. Rear disks optional.. Must be 7-1/2 GM rear end. No ford 9 inch rear ends."

Still having a hard time figuring out the logic/reasoning behind these rules. They allow discs (4 safety), allow aftermarket axles (read "probably Mo$er")for strength, they allow an aftermarket set-up being sold here in Houston (which co$t a grand), so all this adds up to close, if not equaling the price of a decent 9". I gotta be missing something here

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nate 11
Member
posted February 17, 2003 08:35 PM
RC i run a limited mod.too. i wondered the same thing about the rearend rule. i would just rather spend the money on 9" and be done with it. but got to go by the rules.LOL nate 11


glen73
Member
posted February 24, 2003 09:00 PM
i run gm 10 bolts,with the bolt in axles,no c-clip,we have to talk weld the bearing on the axles,i have never had a problem with them,the trackswe run we get pretty close with the gearing,i run a 373 while the few guys that run 9" run a 370,i see positives in both.


backofpack
Member
posted February 25, 2003 03:03 PM
have you ever tried to find a ford axle that was the same length as the one you broke at a junk yard its almost impossible thats why i now run a floater in one and gm in the other car cause the rules say so gm is just easier to find here anyway not that hard to change either have done it for the last six years


iowa_dirt_track_girl
Member
posted March 01, 2003 03:47 PM
this is to back of pack there must be a reason for that? IF you would buy a good rear end and gears the axles are guarenteed and I have never broke a good axle my main question is why would you ever run a gm rear end racing if you cant afford a good aftermarket 9 inch then go to the junk yard buy a 9 inch housing and then buy the right aftermarket axles there still is no advantage to running a gm rear end even if all you do is run one track



backofpack
Member
posted March 02, 2003 06:09 PM
didnt buy it .it came with the car cant aford aftermarket stuff i run junk yard
parts mostly with good results not knocking 9in wished we could find axles for them besides that any idiot like me can change a gm gear ford just a little more complicated


hoosier_baby_3D
Member
posted March 02, 2003 10:48 PM
the Ford rearends is stronger. Our first couple of races we ran a couple of years ago, we went with the GM 10 and we got hit in the back quarter panel and we broke the axle and messed the whole rearend up. We switched to the Ford 9", which was what we were gonna do in the first place, and we have ran the same one for a season and a half with no problems.

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"Blood, Sweat, and Gears"


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