i am installing a solid crush sleeve and a new slp posi unit also an aluminum cover to keep things rigid i am currently running 3.23's and have a set of 3.42's on the shelf am wondering if i should swap when i install the new posi unit.the car is a weekend cruser that seldom go's on trips longer than 200mi.if i change i also need a new speedo driven gear to correct the speedo.do i need anything else?

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1990 Trans Am,350 TPI(L98),WS6suspension ,bridgestone RE71's /245/45/zr16
paxton supercharger, alston sfc's,msd 6AL-BTM,
8.5 superconductor wires SLP 1-3/4 headers,duel cats,3"slp exaust, lakewood LCA's,T.B.Bypass
160 degree stat,alum driveshaft,fiberglass wing, secret mods

"if you cant win fair CHEAT"

 

if you have em laying around, go ahead and through em in, not much more work if your alread putting a new carier in. i put 3.42's in my car, its not that much of a difference, but if you have em, why let em sit around???????

 

whats up --no one else have any opinons?

 

I agree if you got em use em.
Its not gonna knock you throgh the back of your seat but there will definitely be a diiference in your 1/4 mile. (a tenth or so)
but I say hell it aint gonna cost you anything so throw em in!!!

 

I agree, If you've got them, use them. Especially if you've got the mods you've got, and spend a fair amount of time on the highway, It'll be fine. Thats how I went, and I've been satisfied.

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KevinP92Z
92 Z28 383 SLP cam,SLP headers,SLP 2ontheLeft,Trick Flow TW heads & pistons,Edelbrock base,Accel SuperRam,52mmTB,Scat Crank & forged ConnRods,MSD 6AL,SLP convertor,Baer 13/12" Track,Moser axles,Hotchkis,Genuine GM 3.42s,SLP HD Torsen,17x9" chrome SS rims
96T/A w/SLP Ram Air,SLP 2ontheLeft, Bilsteins, Baer, Hotchkis, Genuine GM, Torsen
76 4X4 Blazer 400TPI project