whats the cheaper way to go about a rear end?
02-29-2008, 10:25 AM
#1
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whats the cheaper way to go about a rear end? i wanna replace my rear end and i don't wanna spend an arm and a leg doing it. whats the cheaper and better way to go about it? can you find anything in a junkyard thats worth building? how about a built ten bolt if i can get one for cheap is it worth it? i am thinking about getting one for a good deal so i'd go that way
02-29-2008, 11:19 AM
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02-29-2008, 11:31 AM
#6
Man it really doesn't eat up much more than a 12-bolt & if your a 6-speed you'll praise the 9" later when it doesn't take a dump on you. I would never suggest goin with a 12-bolt in a 6-speed if your gonna ever put full slicks on it. It has been done but lots of guys making decent power & running a 6-speed have broke 12-bolts. An auto car is alot easier on the rears in these cars than a 6-speed. So you also need to factor that into it.
02-29-2008, 11:33 AM
#7
There is nothing cheap and easy. If there was something you could get out of a junkyard and build, aftermarket rear ends would not fly off the shelves like they do. If it's cheap it ain't reliable and if it's reliable it ain't cheap.
1. Buy a new 9 inch, 12 bolt, or S60. Cost $2,200+. Never worry about rear end again.
2. Buy a used 9 inch, 12 bolt, or S60. Cost $1,500+. Never worry about rear end again.
3. Build your 10 bolt. Build it about three more times as it is not a matter of "if" but "when" it will break. Continually. Then realize you've wasted money rebuilding something inferior and should have just saved up for a real rear end before going to the track.
1. Buy a new 9 inch, 12 bolt, or S60. Cost $2,200+. Never worry about rear end again.
2. Buy a used 9 inch, 12 bolt, or S60. Cost $1,500+. Never worry about rear end again.
3. Build your 10 bolt. Build it about three more times as it is not a matter of "if" but "when" it will break. Continually. Then realize you've wasted money rebuilding something inferior and should have just saved up for a real rear end before going to the track.
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02-29-2008, 06:39 PM
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Dont know if its quite that high,but any way I just got my gmhightech mag in.They had a tech artical about rear ends. They tested two cars.One with a dana 60 and the other with a moser m9. The dana had a 3.5% loss in hp and the m9 had 1%. the camaro that switch to the dana use to have 342 gears and use to put down 421rwhp 390rwt.After the dana 60 with 3:73 gears it put down 398/376. the trans am with 342 gear put down 441rwhp432rwt and with the moser with 370 gear it put down436/428
03-01-2008, 07:58 AM
#11
Dont know if its quite that high,but any way I just got my gmhightech mag in.They had a tech artical about rear ends. They tested two cars.One with a dana 60 and the other with a moser m9. The dana had a 3.5% loss in hp and the m9 had 1%. the camaro that switch to the dana use to have 342 gears and use to put down 421rwhp 390rwt.After the dana 60 with 3:73 gears it put down 398/376. the trans am with 342 gear put down 441rwhp432rwt and with the moser with 370 gear it put down436/428
Last edited by 99blancoSS; 03-01-2008 at 08:05 AM.
03-01-2008, 09:19 AM
#13
ford 8.8 but you rent saving a ton...not enough to make it worth it imo
ive seen a guy locally keep stock gear in his 10 bolt...put in an eaton posi(posis break in them a lot) then put moser axles(they break next) and hes been doing 1.38 60' consistantly at 3700+
personally id rather get a rearnend im not goana worry about breaking
ive seen a guy locally keep stock gear in his 10 bolt...put in an eaton posi(posis break in them a lot) then put moser axles(they break next) and hes been doing 1.38 60' consistantly at 3700+
personally id rather get a rearnend im not goana worry about breaking
03-01-2008, 12:37 PM
#14
Dont know if its quite that high,but any way I just got my gmhightech mag in.They had a tech artical about rear ends. They tested two cars.One with a dana 60 and the other with a moser m9. The dana had a 3.5% loss in hp and the m9 had 1%. the camaro that switch to the dana use to have 342 gears and use to put down 421rwhp 390rwt.After the dana 60 with 3:73 gears it put down 398/376. the trans am with 342 gear put down 441rwhp432rwt and with the moser with 370 gear it put down436/428
And from my experience going from a 10 bolt to a 9' drops more than 1% hp
03-01-2008, 01:14 PM
#15
Its documented on a dyno guys. There are so many variables to dyno numbers that unless you do your testing same day you cant really use the info.. unless you control and match all those variables.
Now I'm not saying you guys are wrong. I'm saying it was done by someone here and they dyno tested it to 19 hp loss and documented it. I've seen the thread, I'll look for it and post the link. Maybe there is something wrong with it?
still looking
Now I'm not saying you guys are wrong. I'm saying it was done by someone here and they dyno tested it to 19 hp loss and documented it. I've seen the thread, I'll look for it and post the link. Maybe there is something wrong with it?
9" has a 90% efficiency. 12-bolt has a 93% efficiency. A 10 bolt is hair more efficient due to a little less rotating mass. When it is all said and done, the differences are negligible.
still looking
Last edited by 99blancoSS; 03-01-2008 at 01:31 PM.
