i did a thread earlier about how to bore your intake. here is another thread on how to prep it for chroming. this manifold was bored to 70mm.


after welding, facing the tb surface, boring yet to be done:


after cleaning up the iacv ports. 70mm compared to 66mm


all taped up ready to be sand blasted:



here are some comparison pics...
oem:


smoothed:


blasted:


oem:


smoothed:


blasted:


comparison between the 70mm and 66mm after blasting:


before blasting:


after blasting:



oem:


smoothed and blasted:


ready to be chromed i say!

 

Great set of pictures!

I don't think I've ever seen a thread with pictures showing every step of the process.
to you for your efforts.

 

Thanks for taking time to illustrate and compare. even the blasted pics look better then oem. removing that material can save some weight and reduce the amount of heatsoak aswell.