How weak are these things? I have been to the track and ran a 13.2 @109 with an SLP lid and loud mouth....wanted to reach 12's without a tire, but heard that the rears are junk? Any suggestions?

 

our rear ends are horrible - they can crap out under stock power and hard launching. throwing more power and stickier tires at it will only shorten its lifespan so if you're going to do either of those, make sure you have some money saved up for a stronger rear because reinforcing the stock rear isn't really effective or worth it

 

Then you have guys running over 400 rwhp and drag radials and the stock rear end. A friend of mine is still running his w/over 400 rwhp, BFG DR's all w/an M6.

 

so i guess it is just hit or miss with the junky rears huh?

 

Basically.

I have a friend with a 6 spd. about 345 RWHP, drag radials and launches it HARD at the track a lot and his hasn't broken yet.

Me on the other hand who goes to the track once in a while and who's lightly modded, had to have all the bearings in his rear replaced 3 weeks ago.

 

I have made lots of 12 second passes and hundreds of low 13 second passes and have yet to break anything. Although I have not put the DR's on the 6 spd yet. I agree its a hit or miss. I see guys running drs at the track on M6s all the time and I have never seen one break. One in the 11s and one low 12s.

Avoid dead hooking it and you should help it last.

 

It is a piece of junk. it's the same as GM puts in an Astro Van. GM replaced my 99Z three time s & it still howled & I never abused the car.

Pat

 

they suck.


run it till breaks then upgrade it.if you cant afford a 12 bolt or 9 inch i suggest not racing.

 

Dude it's hit or miss. SFB767's friend is also my friend, this guy has linelock, heats up his MT ET's, drops his Centerforce clutch from 5K rpm's at the track, done this tons of times. He's gone through like 3 clutches with 60K miles on his car, no rear end problems whatsoever. My car has 36K miles, stock clutch, always on street tires, feather the clutch, and my rear end is gonna lock up on me at any moment. Search the drivetrain forum, many people have seen 11"s and I believe there's one guy that has run consistent 10" runs on his stock 10 bolt. But my car has never seen a better 60' than 2.193, no sticky tires, no clutch dumping, and yet it's howling like a bastard. The one possible explanation I have heard, besides my crappy luck, is that if you have an M6 and you shift really hard that could cause problems. I don't think I shift any harder than my friend, and I would think my OEM clutch or street tires would lose grip before my rear end crapped out. So that leaves me with my crappy luck as the only reason. Which is why I'll probably end up getting a spool. My crappy luck can't screw up a spool. And a daily driver with a spool should score me plenty of awesome points.

Abe

 

DD on a spool sucks. Hope you like buying tires. lol

 

So would you guys recommend a rear end girdle, or is it a waste as far as getting what you pay for ($150-ish)?

 

i dont kno how much of a hit or miss it is but there are 2 guys locally running 1.3 60' on a stock rear end...they said they have learned if you keep the stock 3.23 or 3.42 then the rear end will hold...i kno 1.3 is fast but i can vouch and have seen both then have their tires 2 or so feet off the ground for the first 60 feet...all they have is a girdle and auburn posi...one is in a 3rd gen(stock weight...6.3 in the 1/8 and one is in a lt1 trans am (lightened some) 6.3 in the 1/8
so as for that idk how strong they are but with stock gears i can say ive seen them cut these 60 foot consistantly probably over 100 times with et streets
daniel

 

Higher gears are always stronger.