whre is the best place to splice in for the vacuum connection needed for my th350? Some places splice into the line from the intake to the fuel pressure regulator, is this ok? Won't cause any problems with the fuel pressure?

 

I would not recommend splicing it into the FPR line.

If you have to splice it to something (i.e. there's no manifold vacuum source left), splice it into the power brake line.

 

where did anyone who did the swap spilce it into?

 

I couldn't say what people besides myself have done in a swap, and I don't know that I would duplicate whatever somebody else did just because they did it; but...

Factory Turbo 350 (or Glide or 400) installations up through about 1971 or so typically used a fitting that went on the intake manifold behind the carb. The fittings on auto cars usually had 3 holes: one big hole for the brakes, one small one for the modulator, and one small one to the passenger cabin for the heater control door vacuum motors. Later cars used a fitting in the base of the carb at the rear for the brakes and a separate fitting an inch or 2 away on the intake mainfold for the vacuum modulator and the cabin vacuum. I have several cars with 350s and 400s; some are built the one way, some the other.

Now just for myself, if I were to be doing a swap, I believe I'd duplicate the factory methods as closely as possible, and not what some random swapper did. Others may of course feel differently about where to look for an example of correct adaptation.

 

I was just curious because I have a tpi car and wanted to see where some poeple have installed the line, I wasn't going to exactly duplicate someone, just wanted to see some options.

 

i'm just going to run it off the HVAC