with fixed cam gears you can get them sounding pretty crazy, lee dalts ute is running them atm and its freaking lumpy!

cheers that would be nice might be able to hear my car over my mates gtr for once haha

I have them in my engine, was lumpy as hell, had quite a few asking if it was a Turbo or an XR8...

Bit muffled but it was my mates sh*tty old phone, and that was with the Quiet XForce system...

Yes they are very lumpy they sound awesome, but you need fixed cam gears and make sure you shim them as atomic do not mention it!!

What don't atomic shim

The fixed gear or cam tunnels ?

lifters jet, as they are reground factory cam shafts

Srs not a new shaft ? Gee bit average

Whats the specs on the 4cams vs std ?

well Atomic may be new shafts, but crow are def regrinds! we have had alot of problems with shimming cams as the lifter recess in the head are all different depths. meaning they all require all different sized shims.

the stage 4+ cams are huge compared to fg cams. I dont think you can use vct on them! stage 4 is the max you can go with using the vct.

here ya go jet, bit of reading for ya

http://www.atomicperformanceproducts.com/camshafts.html

Yes they are very lumpy they sound awesome, but you need fixed cam gears and make sure you shim them as atomic do not mention it!!

did you use the atomic fixed cam gears or another brand?

Correct stage 4 is the max on VCT but small additional overlap is gained off 4plus and 5 cams

In all honesty keep the 4's with VCT and have your cake and eat it 2

Wonder if the head can even take that much lift that the 4+ and 5 advertise 13mm is huge !!

Edited April 6, 201313 yr by J@SNOT