Mike, not sure if anyone has ever asked this question. Knowing that the 302 ECU can't control a 351 motor OR vice versa due to the displacement differences.

How much will a Superchip tolerate OR is capable of handling if I was to stroke the motor, be it a 302, 351 OR a 460? All of this providing I have the correct ECU for the original displacement size. Example: 302 motor with a 302 ECU, 351 motor with a 351 ECU.

I know that for each different motor that there are a number of variations that you could bore these motors out to, to get extra horsepower and torque. The big thing is that I would like to stay with fuel-injection and not have to switch over to a carburator. I am thinking about doing this on a replacement motor in the future but would like to know before I get started on the plans.

Have Fun & Keep on Truckin'
Dean

 

Hi Dean,

It's not a matter of what a PCM will "tolerate," it's a matter of *proper tuning* for each application, and the displacement parameter needs to be correct in the PCM for numerous reasons.

The bottom line is, if you're going to make engine displacement changes or any other changes that affect tuning, you have to have the engine tuned correctly, there is no 3rd path, there's the right way, and then there's everything else.

Now if what you're asking if it mattters if you pickup up 3 or 4 cubic inches from a .060 overbore, no, that's not a big deal though we'd still correct that parameter in any custom program.

 

Mike, thanks for the answer. I was asking about boring the motor out, be it 30 or 60 over as long as I have the correct computer for the actual motor. If I was going to bore a 302 out then I still need the 302 computer and you can adjust the displacement within the chip for it. And the same goes for a 351 and a 460 as well.

Have Fun & Keep on Truckin'
Dean