An Easy Swap? 1970 C4 Into A 1967?

Sixty7Restomod

New Member
Oct 13, 2008
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The Bay Area
Hey everybody, my c4 has been giving me issues so I'm thinking about pulling and rebuilding it. While browsing Craigslist I found a rebuilt 1970 c4 for a great price. Is this a simple swap? Researching I read that I will need a converter from a 70 and up c4. What else do I need? Will my current flexplate be okay? I have a 67 with a 302 and a 67 c4.
 
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as long as you get the converter that goes with the trans, then you are good to go with the swap as it is a direct replacement. one thing to be careful of though is note the direction of the shift lever on the trans, it should match the one on your current trans to maintain the floor shift pattern. you could also swap to an after market shifter as well.
 
As far as the flexplate is concerned, as long as the '70 c4 is coming off a '70 302 it should have a 28oz imbalance just like your current one, so don't bother replacing it unless there is damage.