How big can I go?!

[sdj02]

Well my 80 wagon has the W engine code so I am assuming I have the old 301 motor. I have the auto transmission, and I was wondering what will this transmission handle? What transmission is probably in this car, and what rear end? I guess if I stay Pontiac the transmission, and motor mounts will work on a 350 Pontiac, but what if I change to a Chevy 350, will the transmission still bolt up, and what motor mount changes will have to be made? I am going for a strictly street legal toy, so I do not need any bells and whistles......just hp!! Any ideas anyone has would be appreciated.

Thanks!!

 

[85t5mcss]

Trans won't work unless it has the dual bolt pattern for Chevy and BOP. Unlikely for the year. What trans do u have? A 200cwon't handle much more than stock and the TH350 will handle a mildly built 350. As far as the Pontiac Engines, I don't know. But a Chevy swap will require different mounts and trans.

 

[Chevyman85]

Most likely you have a Metric 200C. The easiest way to tell is by the Trans pan. It should look similar to a TH-350. It will be almost square with one corner notched out. The 200C will be the same except it will say "METRIC" across the pan. 200/200C also have 11 pan bolts, where as 350's have 13, thats the only two ways to tell them appart by looking at case. I made the mistake of not knowing the difference when I bought my Elco back in the day. If its a 200 its garbage, if its a 350 then you have something to work with, but I'd still rebuild/build it up. Swaping over to SBC will take a lot of work, and fab.

 

[Chevyman85]

Heres a great link to a Trans info site, Hope it helps you out
http://www.technicalvideos.com/identify_my_transmission.phtml