Will a rear end girdle increase life span of 8.8 rear?

TonyG

Founding Member
Apr 12, 2002
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17
Owings Mills, MD
I've been having pretty good luck with the stock 8.8 trac lock. I'm making 455 rwhp, have about 150 passes and I had it rebuilt twice. I know its time to rebuild when I start getting one-wheel burnouts. It seems like a good strategy to just rebuild the rear every couple of years, instead of trying to find an indestructible limited slip diff.

My 60' in those 150 passes were about 1.7-1.8s, which may explain the longevity of the stock tracloc. But recently I switched from ET streets to a full slick, and found that I can launch much harder. First time at the track with the slicks netted me low-mid 1.60's. I know with some more practice I'll be in the 1.50's.

I'm afraid that 1.50's-1.60's will kill off the tracloc a lot faster than 1.70's-1.80's did, and I was looking for ways to compensate for this.

Rear end girdles, like the TA came to mind. I know the girdles reduce flex, but will this really help extend the life, or do these girdles just prevent the rear from spilling all over the track when they blow up? Thanks
 
Dude, your so lucky!. Are you saying that you're running 11.30s with 1.7 short times with the stock axles in a 5 speed? Unheard of!

Mine snapped off inside the carrier at the splines and was mass carnage . . . I'd also like to know more about the girdles . . .
 
They WILL extend the life of the rearend. The whole purpose is to strengthen the rearend and support the main caps. They also reduce the oil temp due to better heat exchange. Now the bosus is they look much better, and they have drain plugs to make it easier to change the oil. They will not take the place of stronger axles though.
 
jstreet0204 said:
They WILL extend the life of the rearend. The whole purpose is to strengthen the rearend and support the main caps. They also reduce the oil temp due to better heat exchange. Now the bosus is they look much better, and they have drain plugs to make it easier to change the oil. They will not take the place of stronger axles though.

well put!
 
damac, I've been running 11.70's with 1.7-1.8 short times on ET Streets for a long time. Recently, I switched to shorter gears and taller/stickier tires and my times dropped to 11.50's with 1.6 short times. 11.30's were achieved in 40 degree air; 11.50 is more typical. And yes, this is with stock axles and stock (but 2x rebuilt) traclok. Tranny is stock T45 and clutch is SPEC 3.

Blower is Vortech. Intercooler and plumbing is Procharger