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Slush box ????

Discussion in 'The Garage' started by Z3PR, Nov 8, 2002.

  1. Z3PR

    Z3PR Banned

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    I will be installing new axles with 373 gears this comming spring. I will also be putting on 35" tires. T-case is the NP-203. Tranny is a TH350. Now my question is: should I consitter a 700R4 ???? Or stay with the TH350. I was thinking beefing up the TH350 and possibley going to 4:56 gears, but I'm now thinking a beefed up 700R4 might be the way to go. What do y'all think ???? Plan on using my Blazer as a DD and for trails.
     
  2. zakk

    zakk 1/2 ton status

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    i run a TH350 and have yet to burn one out. I have cracked a few in half, but that was in my younger years.

    Greg runs one behind his 396. I think the trick would be to gear appropriatly. with 39.5's and 4.10's i am turning about 2900 RPM's at 72-75 MPH.

    I would go with the th350. cheaper and can be made to take the punishment of a full size rig.
     
  3. BLUESMAN

    BLUESMAN 1/2 ton status

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    Keep you TH350 trans, the 700 will take alot of cash to be as strong.The only advantages the 700 has are the 1st gear(3.06 vs 2.47) and the overdrive.Get the gears....either 4.10's or 4.56's.I'd lean towards the 4.56's with 35" tires...you can always get bigger tires!You got 3/4 ton diffs,yet??
     
  4. Chris_T

    Chris_T 1/2 ton status

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    I've had a 350 with 3.73's, a 700 with 3.73's and a 700 with 4.56's - all with 35's My favourite combo is the 700 and 4.56's, but the only real difference is on the highway where the speed gets up high enough for the OD to make a difference. The 700 was an improvement around town with the 3.73's, but 4.56 gears and a 350 would make it a lot better. If I were you I'd go with the 350 and 4.56 gears unless you do a lot of highway driving. If you do put in a 700, you could go even lower than 4.56's. My rev's are low enough I wish I went with 4.88s.
     

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