[C5GTO]

Going from 302 to 347 cid would purely be for the extra power. The main purpose for the OD TKX transmission would be to lower RPMs while driving on the Interstate.

A question related to the 347 stroker direction, will the current EFI tune be adversely impacted by the extra cid? If so, would the situation be that the dyno tune done for the 302 cid engine just might be non-optimized for the 347 or the extra displacement really requires a different tune to prevent engine failure?

As I'm putting together a budget for the fixes here, it's important to capture all the line items. I'm guessing a dyno tune is probably in the neighborhood of $750 these days thus a significant line item.