Gy6 egr vs non-egr camshaft question

[bighogman]

I tried to install a non-egr A9 camshaft to an 150 cc egr GY6 engine. the lobe height is not high enough. I verified the cam and it was correct. I suspect the egr head has a lower ratio rocker arm. I was wondering if i can change the cylinder head and rocker assembly to a non-egr. Also, I may want to install an 165cc or a 172cc big bore kit. Any help would be appreciated.

2016 Znen rx 150 , engine BN157QMJ

[tortoise]

verified the cam
Possibly incompatible cams . . typical GY6 (http://www.partsforscooters.com/164-40_GY6_Camshaft) . . GY6B (http://www.partsforscooters.com/165-24-Camshaft)?

[bighogman]

I put the A9 cam in it and it runs to about 45 mph. The cam lobe is not high enough. Tortoise - the specs for the cam makes sense now. it's gotta be the rocker arms