Camshafts

Well, my simple 3 day weekend maintenance to the Galant turned out to be more than I expected (like they always do I guess) Anyways, while doing a timing belt I figured now would be a good time to upgrade to 3g lifters. Well, once I got the cams out BIG suprise, the #4 intake cam journal is simply destroyed along with that cam journal as well as a journal on the exhaust.
So now I am replacing the head and cams. I have located a cylinder head but still need cams. I have my eyes set on a set of Brian Crower cams but really don't want to spend the money right now. So when looking for stock cams I have some telling me that N/A cams for the 1st gen are the same as turbo. Then I read they are different and later read the N/A cams work better in the turbo cars. So in other words I have tried to search, but I can not get a straight answer. Any help would be much appreciated

 

NA cams are different then turbo cams.

USDM 4G63 (Eclipse/Talon Turbo) Stock 248°/248° 200°/200° .349"/.350" 8.86/8.89
USDM 4G63 (Eclipse Non Turbo) Stock 256°/248° 208°/204° .365"/.349" 9.27/8.86

 

The NA specs you gave are for the "D" cams, correct?

 

[holeshotmoe]

This thread is way old but I'm out of the cam technology loop, and I have a question that is somewhat related: I see those numbers are different but what's the advantage of one over the other. The reason I ask is because I put a set of turbo cams in a GGSX when I did a valve job on it, and now it seems to be even weaker than it was. Imagination or should I swap the NA cams back in? /ubbthreads/images/graemlins/frown.gif

 

[curtis]

put the na cams in... your losing because the total lift and duration is different plus a turbo cam has more overlap. time when intake valve and exhaust valve are open at the same time period. Turbo cams don't need as much lift from the factory because the turbo is pumping in more O2 and fuel.

wiki
how stuff works
watch video

 

[holeshotmoe]

Nice. Thanks!