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Username Post: TH 350 conversion to a 700R4        (Topic#368004)
Junk86 
Newbie
Posts: 25

Reg: 03-15-19
03-25-22 01:30 AM - Post#2838646    


Has anyone made this switch with a 73/74 Chevy Nova? If so, can you tell me what all changes there are that have to be made?

Converting a TH 350 trans to a 700R4 trans.



 


wagonman100 
Site Ambassador
Posts: 15650

Loc: Baltimore, MD
Reg: 11-27-04
04-02-22 08:01 PM - Post#2839169    
    In response to Junk86

I have not done it an a Nova, but on an El Camino. The trans mount if further back. That means your trans crossmember needs to be moved back. Or one made for the conversion needs to be bought. You will need to either have a driveshaft made or yours shortened. The 700 takes the same yoke as the TH350. Then you need the throttle valve cable and the correct bracket to use with your carb. to ensure the correct geometry and that it pulls the cable out the correct amount as the throttle is applied. You can burn up a 700 quickly with a bad TV cable adjustment. I used a Lokar cable because I had converted my Elky to TPI, but it was a little harder to adjust the cable properly. If you can get a bracket that uses the OE style adjustment, it makes it easy to adjust, you just press the button on the bracket and then open the throttle all the way with the engine off and the cable pulls out to the correct adjustment.

Jay
Friends don’t let friends drive Fords.

1999 Silverado Z71 4X4 extra-cab short bed
1983 Malibu Fauxmad - tubbed
1978 El Camino Kustomized
1972 Monte Carlo
1957 210 handyman wagon
1957 Nomad sport wagon
1957 Cameo Carrier


 


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