2.4L T cam upgrade - what else is needed?

[422flat6]

Apologies in advance if this has already been covered. I have tried searching everything I could think of and couldn't find what I was looking for.

I have a 2.4L 911T engine that has been freshly rebuilt (prior to my purchase) top and bottom end. Pistons are 1mm oversize higher compression pushing the CR up to 9.4:1 with compression readings of 190-195 psi on all cylinders. Dyno results from the engine build show 160hp. It has the stock T cams along with the stock heads, throttle bodies and MFI pump.

I'd like to swap to E cams (or similar). From what I've read this is the best bang for the buck upgrade for a street 2.4L engine besides increased compression, which I already have. I'm not interested in increasing displacement since the engine is freshly rebuilt. What else, if anything, needs to be changed to go along with the E cam swap? Can the stock T spec MFI pump handle the change or do I need to change to an E space cam? What about valve sizes and throttle body port sizes? Were T and E valves and TBs the same diameters? I know S ports and TBs were larger, but would be too large for E cams.

[tharbert]

There are indeed differences between the E and T throttle bodies and stacks. Mr. Butler provides a great chart in this post about the differences.

The MFI pump is optimized for the OEM intake, displacement, compression and cam profile. To get the most out of your changes, I would think you'd need to adjust the pump. I dunno if that means a recurved space cam. There are experts here that can wade in on that.

[bgyglfr]

My understanding is that you can go up roughly one cam size and still use the existing mfi. T to E. E to S. Etc. So you should be ok just changing out the cams. The valves are all the same from 2.2 - 2.7 motors. You could port the heads but that would only make a difference on the top end. Your motor should respond nicely with just a simple cam change.

Edit: forgot to mention. Yes. You will need to tune the mfi to the new engine spec.

****** Make sure you check your valve clearance when you install new cams. *****