Transmission pairing with a mild modified supercharged SB

Discussion in 'High Performance Modifications' started by NM1989, Dec 4, 2017.

  1. NM1989

    NM1989 New Member

    11
    2
    Sep 23, 2017
    Coastal Virginia
    I am looking to upgrade my transmission to a TH350 that can handle a mildly modified SB 350 or 383 with a Weiand 177 supercharger. For round numbers sake, I plan on making 450-500hp. Eventually I want to buiid a SB 350 or 383 but I want to posture my drivetrain to handle the upgrade. There are tons of forums on Super Chevy with Weiand reviews but I can't find info regarding transmission pairing. Any thoughts are appreciated.
     
  2. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    Weight & application makes a huge difference.


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  3. SRGN

    SRGN Veteran Member

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    Feb 20, 2009
    Central NJ
    This. Post up the rest of your combo.
     
  4. NM1989

    NM1989 New Member

    11
    2
    Sep 23, 2017
    Coastal Virginia
    Its going into a 1979 Camaro with a 4.10 gear. I currently have a SB 350 4 bolt main with a Comp Cam CL12-242-2 and a 2700 stall in a TH350. Heads are cast iron rebuilt rebuilt heads (can't remember valve size--rebuilt the motor with my dad ten years ago). The current TH350 has seen better days and want to upgrade to something I can grow into from a HP/TQ perspective. I don't plan on running a trans brake. Goal is to have an occasional street/strip car eventually adding a Weiand 177.
     
  5. Zspoiler

    Zspoiler Veteran Member

    2,530
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    May 6, 2012
    Federal Way, Washington
    Check with your local transmission shop .and or transmissions companies such as Art Carr transmissions,TCI,etc.
     
  6. Z28zz383

    Z28zz383 Veteran Member

    790
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    May 11, 2012
    Florida
    I am on my 2nd 350 turbo since my motor swap from stock power. I now have about 425hp 460tq. 1st one I had built blew out fairly quickly, and I mean blew up. It blew the sprag , pump and the clutches to pieces. Got a new trans guy! The second one was built with all new parts, billet drum, hardened sprag , new clutches with a larger capacity pan and a big hayden cooler using a magnetic filter. No trans go shift kit stuff, just a well built tranny. It shifts firmer than ever and has so far held up for 5yrs. If you get the right tech a modded 350 will last with up to 500hp according to my trans guy. After that a built 400 would be better. Also using a PTC converter 2800 stall with no prob for 5 yrs. jm2cts
     
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  7. vegas1974z28

    vegas1974z28 Moderator Staff Member Lifetime Gold Member

    4,602
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    Jan 10, 2002
    Las Vegas,NV
    This is always the right play....however... I ran a 177 ontop of a 468 and a turbo 350 (upgraded) it pushed me into the 11's with few problems. I eventually went to a 400 with a trans break
     
  8. NM1989

    NM1989 New Member

    11
    2
    Sep 23, 2017
    Coastal Virginia
    Awesome! So I was looking at the TCI Streetfighter and it specifically says "non-supercharged applications" in the description but in the same paragraph it says it's rated between 400-775hp. I was wondering if there was a weird consideration for this specific trans with regard to blowers. It's within my budget and Jegs offers a kit with trans cooler and torque converter.
     
  9. NM1989

    NM1989 New Member

    11
    2
    Sep 23, 2017
    Coastal Virginia
    Also, you all are correct. I need to give the experts at TCI/B&M (whichever one I go with) a call to see what they recommend.
     
  10. mrdragster1970

    mrdragster1970 Veteran Member Lifetime Gold Member

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    I don't recall ever having to do something different for a blown application compared to N/A or N2O???

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