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quad 4 ho 5 speed bellhousing swap

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  • quad 4 ho 5 speed bellhousing swap

    i finnaly got my diff back from engeneered performance, got it all shimmed and had the bellhousing on test fitting and noticed it was stuck in reverse, wasnt able to shift it. after about 1/2 hour i figured out the reverse idler shift rail is too long.

    what i finnaly figured out was that the quad 4 bellhousing with the internal slave has the reverse shift rail pocket protruding into the bellhousing about 3/4", were the 90 v6 bellhousing im using has a very shallow pocket and a plastic peice inside the tranny. luckily i have a complete 89 tranny and am able to grab the reverse idler rail out of that one, and i managed to get it out without completly dissassenbling the tranny again.

    has anyone ran into this before??? from everything i have read all you had to do was shim the diff, input and counter shafts and bolt the v6 bellhousing on. ill post some pics later of the 2 shafts side by side to show the difference.

  • #2
    depends on the year of Q4 tranny.. mine did the same exact thing. I took the reverse rail off my 91 V6 tranny and just installed it in the quad 4 tranny. Works perfect


    iirc the quad 4 trannies with internal slave all had the longer reverse rail.
    Past Builds;
    1991 Z24, 3500/5 Spd. 275WHP/259WTQ 13.07@108 MPH
    1989 Camaro RS, ITB-3500/700R4. 263WHP/263WTQ 13.52@99.2 MPH
    Current Project;
    1972 Nova 12.73@105.7 MPH

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