Correct TH 400 transmission mount for my 1970 SS 396 with TH400.

Discussion in '1970 - 1973 Specific' started by john Gialanella, Dec 21, 2017.

  1. john Gialanella

    john Gialanella Veteran Member

    233
    4
    Oct 15, 2008
    Bloomfield N.J.
    Does anybody know the correct part or parts numbers for 1970-74 Camaro SS 396 or Z-28 trans mount for TH 400 trans. I do not want to buy reproduction because they seem to be universal mounts for several applications (TH400, TH350, & Manual trans,). The lower wider holes are oblong, not round. So far I have 2 part numbers for TH400 trans, #334529 and #3913498. One guy said his book said #334529 is for 1967-69 camaro, but does not mention 1970 camaro. The #3913498 seems correct, but are their superceded part numbers.
    Thanks John Gialanella.
     
  2. shad_van

    shad_van Veteran Member

    200
    1
    Jun 15, 2012
    las vegas, NV
    John,

    My car is a 71 SS 396 with a 4 speed Muncie M20. my assembly manual shows the 3913498 transmission mount and the 3964800 frame cross member. I believe the 3913489 transmission mount was used for all Transmissions in 71 and that only the cross member used with the TH400 was different. the cross member for the TH400 is 3964819 according to my assembly manual. I don't know what the difference is between the two cross members.

    From working on a buddies 67 Camaro, I recently learned that the first gen Big block cars used different motor mounts that offset the engine to the passengers side by about 1/2 inch to help with clearance around the steering box/shaft and exhaust manifolds, but I don't know if that applies to second gen cars.
     
  3. john Gialanella

    john Gialanella Veteran Member

    233
    4
    Oct 15, 2008
    Bloomfield N.J.
    Thanks for information. Their are several mounts for sale on E-Bay all stating for TH400 transmissions. One is #3913498, the others state #334529 is correct. Even if the #3913498 is the correct one, the guy wants $350.00 plus shipping. A lot of sellers on E-Bay are super greedy. Their was one guy up until a year ago who was trying to sell one F-60-15 Goodyear Polyglas GT tire for $4,000.00. I kid you not. He is either insane or the greediest person alive. Does anybody know if their is a quality reproduction mount out their.
    John.
     

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